首页 > 最新文献

Surface Engineering and Applied Electrochemistry最新文献

英文 中文
Investigation and Modelling of Copper Electroforming Process for Surface Roughness Parameters Using Regression and Pareto ANOVA Analyses 利用回归分析和帕累托方差分析对铜电铸工艺的表面粗糙度参数进行研究和建模
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060066
Amir Masoud Behagh,  Alireza Fadaei Tehrani

The objective of this paper was to examine the effect of such deposited copper electroforming process control parameters as the applied voltage, the process time, the filler content, and the copper sulfate concentration on the surface roughness. For this purpose, an electroforming setup was made using a copper sulfate electroforming bath. A full factorial method was used to design the experiments with four control factors, each of them of two levels. After conducting each experiment, the prepared copper electroformed samples were characterized using a contact profilemeter and measuring certain surface roughness parameters, namely, the average roughness, the root mean square roughness, the average maximum height of the profile, and the autocorrelation length. Finally, the regression modelling was used to obtain a predictive model based on the measurements data. Also, the Pareto ANOVA analysis was performed for each surface roughness parameter to evaluate the contribution ratio of the control factors. The results demonstrated that a different control factor is dominant for each surface roughness parameter.

摘要本文研究了镀铜电铸工艺控制参数如施加电压、工艺时间、填料含量、硫酸铜浓度等对表面粗糙度的影响。为此,采用硫酸铜电铸浴建立了电铸装置。采用全因子法设计4个控制因子,每个控制因子为2个水平。每次实验结束后,用接触轮廓仪对制备的铜电铸样品进行表征,测量表面粗糙度参数,即平均粗糙度、均方根粗糙度、平均最大轮廓高度和自相关长度。最后,利用回归建模方法,根据实测数据建立预测模型。此外,对每个表面粗糙度参数进行Pareto方差分析,以评估控制因素的贡献率。结果表明,不同的表面粗糙度参数具有不同的控制因子。
{"title":"Investigation and Modelling of Copper Electroforming Process for Surface Roughness Parameters Using Regression and Pareto ANOVA Analyses","authors":"Amir Masoud Behagh,&nbsp; Alireza Fadaei Tehrani","doi":"10.3103/S1068375523060066","DOIUrl":"10.3103/S1068375523060066","url":null,"abstract":"<p>The objective of this paper was to examine the effect of such deposited copper electroforming process control parameters as the applied voltage, the process time, the filler content, and the copper sulfate concentration on the surface roughness. For this purpose, an electroforming setup was made using a copper sulfate electroforming bath. A full factorial method was used to design the experiments with four control factors, each of them of two levels. After conducting each experiment, the prepared copper electroformed samples were characterized using a contact profilemeter and measuring certain surface roughness parameters, namely, the average roughness, the root mean square roughness, the average maximum height of the profile, and the autocorrelation length. Finally, the regression modelling was used to obtain a predictive model based on the measurements data. Also, the Pareto ANOVA analysis was performed for each surface roughness parameter to evaluate the contribution ratio of the control factors. The results demonstrated that a different control factor is dominant for each surface roughness parameter.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"780 - 790"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
On the Issue of Calculating the Magnitude of Induced Charges and the Electrostatic Dipole of an Oblate Spheroid with an Axis of Symmetry Collinear to the External Homogeneous Electrostatic Field 关于计算对称轴与外部均质静电场平行的扁球体的感应电荷量和静电偶极子的问题
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S106837552306011X
N. Yu. Kolbneva

The values of the surface induced charges, the positions of their centers, and the value of the equivalent dipole of an oblate conducting spheroid are determined by transition from spheroidal coordinates to a spherical system of coordinates in the analytical asymptotic calculations of the first order of smallness with respect to the squared eccentricity. The characteristics of the equivalent dipole are obtained depending on the value of the electrostatic field strength, squared eccentricity, and the radius of an equal sphere.

摘要在对偏心率平方的一阶小的解析渐近计算中,通过从球坐标系到球坐标系的转换,确定了一个扁圆导电球的表面感应电荷的值、电荷中心的位置和等效偶极子的值。等效偶极子的特性取决于静电场强度、偏心率平方和等球半径的值。
{"title":"On the Issue of Calculating the Magnitude of Induced Charges and the Electrostatic Dipole of an Oblate Spheroid with an Axis of Symmetry Collinear to the External Homogeneous Electrostatic Field","authors":"N. Yu. Kolbneva","doi":"10.3103/S106837552306011X","DOIUrl":"10.3103/S106837552306011X","url":null,"abstract":"<p>The values of the surface induced charges, the positions of their centers, and the value of the equivalent dipole of an oblate conducting spheroid are determined by transition from spheroidal coordinates to a spherical system of coordinates in the analytical asymptotic calculations of the first order of smallness with respect to the squared eccentricity. The characteristics of the equivalent dipole are obtained depending on the value of the electrostatic field strength, squared eccentricity, and the radius of an equal sphere.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"734 - 741"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138630892","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Industrial Application of the Diamond Electrochemical Honing Method 金刚石电化学珩磨法的工业应用
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060170
S. V. Usov, I. P. Tochilin, A. V. Zhdanov

Changes in surface roughness, residual stresses, and other parameters are studied under various selected conditions of diamond-electrochemical honing (DEH) of parts made of the steels 30KhGSA, 30KhN2MFA, 35KhN2MFASh, 23KhGS2MFALU, and St.50A. The honing tool design is presented, and the question of the geometric characteristics of the cathodic section, insulating coating, and material of the guides of the honing tool is resolved. The results are obtained, demonstrating the effect of DEH on the reliability and durability indicators of parts manufactured by this method. The technical and economic efficiency of the created industrial DEH department is demonstrated.

摘要研究了30KhGSA、30KhN2MFA、35KhN2MFASh、23KhGS2MFALU和St.50A钢在不同条件下,金刚石-电化学珩磨(DEH)零件表面粗糙度、残余应力等参数的变化。提出了珩磨刀具的设计方案,解决了珩磨刀具阴极截面几何特性、绝缘涂层、导轨材料等问题。结果表明,DEH对采用该方法制造的零件的可靠性和耐久性指标的影响。论证了新建工业DEH部门的技术经济效益。
{"title":"Industrial Application of the Diamond Electrochemical Honing Method","authors":"S. V. Usov,&nbsp;I. P. Tochilin,&nbsp;A. V. Zhdanov","doi":"10.3103/S1068375523060170","DOIUrl":"10.3103/S1068375523060170","url":null,"abstract":"<p>Changes in surface roughness, residual stresses, and other parameters are studied under various selected conditions of diamond-electrochemical honing (DEH) of parts made of the steels 30KhGSA, 30KhN2MFA, 35KhN2MFASh, 23KhGS2MFALU, and St.50A. The honing tool design is presented, and the question of the geometric characteristics of the cathodic section, insulating coating, and material of the guides of the honing tool is resolved. The results are obtained, demonstrating the effect of DEH on the reliability and durability indicators of parts manufactured by this method. The technical and economic efficiency of the created industrial DEH department is demonstrated.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"849 - 857"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631149","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Study of Photocatalytic Activity of Titanium and Tungsten Oxides Obtained by an Electric Explosion of Metal Conductors in the Air 通过金属导体在空气中的电爆炸获得的钛和钨氧化物的光催化活性研究
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060030
Yu. O. Adamchuk, L. Z. Boguslavskii, A. N. Yushchishina, A. V. Sinchuk

Oxides in the form of micro- and nanosized powder, containing agglomerates of particles with a high specific surface, were obtained by means of electric Ti and W wire explosion in the air. An X-ray phase analysis showed that the only product of Ti destruction is TiO2, while the electric explosion of W conductors results in the formation of WO3 + W2O7 mixture, in which tungsten anhydride WO3 dominates, and traces of a residual metallic W come across. The photocatalytic properties of electroexplosive powder were studied using a model oxidation reaction of methylene blue. It was revealed that both TiO2 and the WO3 + W2O7 mixture demonstrate catalytic activity within a wide spectrum of radiation, including the visible one. The catalytic activity of the WO3 + W2O7 mixture under ultraviolet and incandescent lamp radiation was inferior to that of TiO2; however, in the solar radiation, the rate of dye degradation with the participation of tungsten oxides is higher. In this case, the average rate of decreasing concentration of the dye in water containing a mixture of WO3 + W2O7 depends little upon the type of the radiation source.

通过在空气中对钛和钨导线进行电爆炸,获得了微米级和纳米级粉末形式的氧化物,其中包含具有高比表面的颗粒团块。X 射线相分析表明,钛破坏的唯一产物是二氧化钛,而钨导体的电爆炸则形成了 WO3 + W2O7 混合物,其中钨酸酐 WO3 占主导地位,并出现了金属钨的残留痕迹。利用亚甲基蓝的模型氧化反应研究了电爆粉的光催化特性。结果表明,二氧化钛和 WO3 + W2O7 混合物在包括可见光在内的宽光谱辐射范围内都具有催化活性。在紫外线和白炽灯辐射下,WO3 + W2O7 混合物的催化活性不如 TiO2;但在太阳辐射下,有钨氧化物参与的染料降解率较高。在这种情况下,含有 WO3 + W2O7 混合物的水中染料浓度的平均下降率与辐射源的类型关系不大。
{"title":"Study of Photocatalytic Activity of Titanium and Tungsten Oxides Obtained by an Electric Explosion of Metal Conductors in the Air","authors":"Yu. O. Adamchuk,&nbsp;L. Z. Boguslavskii,&nbsp;A. N. Yushchishina,&nbsp;A. V. Sinchuk","doi":"10.3103/S1068375523060030","DOIUrl":"10.3103/S1068375523060030","url":null,"abstract":"<p>Oxides in the form of micro- and nanosized powder, containing agglomerates of particles with a high specific surface, were obtained by means of electric Ti and W wire explosion in the air. An X-ray phase analysis showed that the only product of Ti destruction is TiO<sub>2</sub>, while the electric explosion of W conductors results in the formation of WO<sub>3</sub> + W<sub>2</sub>O<sub>7</sub> mixture, in which tungsten anhydride WO<sub>3</sub> dominates, and traces of a residual metallic W come across. The photocatalytic properties of electroexplosive powder were studied using a model oxidation reaction of methylene blue. It was revealed that both TiO<sub>2</sub> and the WO<sub>3</sub> + W<sub>2</sub>O<sub>7</sub> mixture demonstrate catalytic activity within a wide spectrum of radiation, including the visible one. The catalytic activity of the WO<sub>3</sub> + W<sub>2</sub>O<sub>7</sub> mixture under ultraviolet and incandescent lamp radiation was inferior to that of TiO<sub>2</sub>; however, in the solar radiation, the rate of dye degradation with the participation of tungsten oxides is higher. In this case, the average rate of decreasing concentration of the dye in water containing a mixture of WO<sub>3</sub> + W<sub>2</sub>O<sub>7</sub> depends little upon the type of the radiation source.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"798 - 802"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138993813","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Electrocatalytic Oxygen Evolution on Glassy Carbon Electrode Modified with Optimized GC/CuxFe3 – xO4 (0 ≤ x ≤ 1.0) Nanocomposite in 1 M KOH Solution 优化 GC/CuxFe3 - xO4(0 ≤ x ≤ 1.0)纳米复合材料修饰的玻璃碳电极在 1 M KOH 溶液中的电催化氧进化过程
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060054
Basant Lal,  Pankaj Chauhan

Copper substituted ferrites (CuxFe3 – xO4; (0 ≤ x ≤ 1.0) were prepared by the egg white auto-combustion method at 550°C and investigated their physicochemical properties via the thermogravimetric analysis, infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and electrochemical ones via cyclic voltammenry and Tafel polarization. The formation of copper ferrites with a spinel phase was confirmed by the Fourier-transform infrared spectra having characteristic vibration peaks and by the X-ray diffraction spectra with reflection planes. The electrochemical performance of the oxygen evolution reaction of copper ferrites on glassy carbon electrodes was investigated in 1 M KOH. No redox couple was observed in cyclic voltammograms of the glassy carbon/oxide electrode in the selected oxygen overpotential regions. The iR-free Tafel polarization curves having higher Tafel slopes (b = 72–125 mV dec–1) and a lower current density (i = 0.29–4.7 mA cm–2 at 0.85 V) exhibited a sluggish nature of the fabricated oxide electrodes from the electrocatalytic point of view. The substitution of Fe by Cu in the oxide lattice considerably increased the electrocatalytic activity for the oxygen evolution reaction. Based on the current density for the oxygen evolution reaction, the 0.75 mol Cu-substituted oxide electrode was found to be the most active electrode among the prepared oxides. The order of the reaction related to the [OH] concentration was a unity for almost all of the electrodes except when 0.25 mol Cu-substitution followed the second-order kinetics.

铜取代铁氧体(CuxFe3 - xO4);(0≤x≤1.0),通过热重分析、红外光谱、x射线衍射、扫描电镜以及循环伏安法和塔菲尔极化法对其理化性质进行了研究。具有特征振动峰的红外傅立叶变换光谱和具有反射面的x射线衍射光谱证实了尖晶石相铜铁氧体的形成。在1 M KOH条件下,研究了铜铁氧体在玻碳电极上析氧反应的电化学性能。在选定的氧过电位区,玻璃碳/氧化物电极的循环伏安图未观察到氧化还原偶。从电催化的角度来看,无ir Tafel极化曲线具有较高的Tafel斜率(b = 72-125 mV dec1)和较低的电流密度(i = 0.29-4.7 mA cm-2 at 0.85 V),表明制备的氧化电极具有缓慢的性质。在氧化晶格中以Cu取代Fe大大提高了析氧反应的电催化活性。根据析氧反应的电流密度,发现0.75 mol cu取代氧化物电极是制备的氧化物中最活跃的电极。除了0.25 mol cu取代反应遵循二级动力学外,几乎所有电极的反应顺序与[OH -]浓度的关系都是一个单位。
{"title":"Electrocatalytic Oxygen Evolution on Glassy Carbon Electrode Modified with Optimized GC/CuxFe3 – xO4 (0 ≤ x ≤ 1.0) Nanocomposite in 1 M KOH Solution","authors":"Basant Lal,&nbsp; Pankaj Chauhan","doi":"10.3103/S1068375523060054","DOIUrl":"10.3103/S1068375523060054","url":null,"abstract":"<p>Copper substituted ferrites (Cu<sub><i>x</i></sub>Fe<sub>3 – <i>x</i></sub>O<sub>4</sub>; (0 ≤ <i>x</i> ≤ 1.0) were prepared by the egg white auto-combustion method at 550°C and investigated their physicochemical properties via the thermogravimetric analysis, infrared spectroscopy, X-ray diffraction, scanning electron microscopy, and electrochemical ones via cyclic voltammenry and Tafel polarization. The formation of copper ferrites with a spinel phase was confirmed by the Fourier-transform infrared spectra having characteristic vibration peaks and by the X-ray diffraction spectra with reflection planes. The electrochemical performance of the oxygen evolution reaction of copper ferrites on glassy carbon electrodes was investigated in 1 M KOH. No redox couple was observed in cyclic voltammograms of the glassy carbon/oxide electrode in the selected oxygen overpotential regions. The iR-free Tafel polarization curves having higher Tafel slopes (<i>b</i> = 72–125 mV dec<sup>–1</sup>) and a lower current density (<i>i</i> = 0.29–4.7 mA cm<sup>–2</sup> at 0.85 V) exhibited a sluggish nature of the fabricated oxide electrodes from the electrocatalytic point of view. The substitution of Fe by Cu in the oxide lattice considerably increased the electrocatalytic activity for the oxygen evolution reaction. Based on the current density for the oxygen evolution reaction, the 0.75 mol Cu-substituted oxide electrode was found to be the most active electrode among the prepared oxides. The order of the reaction related to the [OH<sup>–</sup>] concentration was a unity for almost all of the electrodes except when 0.25 mol Cu-substitution followed the second-order kinetics.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"754 - 763"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synergism of the Initial Stage of Removal of Dielectric Materials during Electrical Erosion Processing in Electrolytes 电解质中的电腐蚀处理过程中电介质材料去除初始阶段的协同作用
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060194
A. A. Zaripov, U. B. Khalilov, Kh. B. Ashurov

Ceramics and composites, many of whose physicochemical properties significantly exceed similar properties of metals and their alloys, are processed qualitatively mainly by the electroerosion method. Despite the existing works, the mechanism of the initial stage of the removal of materials has not yet been identified. For a comprehensive understanding of the mechanism of the removal of dielectrics, a new model is proposed based on the experimental results obtained on an improved electroerosion installation. It was revealed that the initial stage of the removal of a dielectric material consists of three successive stages that are associated with the synergistic effect on the process of the anionic group of electrolytes, plasma flare, and the cavitation shock. This makes it possible to better understand the mechanism of the removal of composite and ceramic materials, which should contribute to ensuring the machinability of those materials and their wide use in promising technologies.

摘要陶瓷和复合材料的物理化学性能大大超过金属及其合金的类似性能,主要采用电蚀法进行定性加工。尽管已有工作,但初期去除物质的机制尚未确定。为了全面了解电介质去除的机理,基于改进的电蚀装置上的实验结果,提出了一个新的模型。结果表明,介质材料去除的初始阶段由三个连续的阶段组成,这三个阶段与电解质阴离子基、等离子体耀斑和空化冲击过程的协同效应有关。这使得更好地理解复合材料和陶瓷材料的去除机制成为可能,这将有助于确保这些材料的可加工性及其在有前途的技术中的广泛应用。
{"title":"Synergism of the Initial Stage of Removal of Dielectric Materials during Electrical Erosion Processing in Electrolytes","authors":"A. A. Zaripov,&nbsp;U. B. Khalilov,&nbsp;Kh. B. Ashurov","doi":"10.3103/S1068375523060194","DOIUrl":"10.3103/S1068375523060194","url":null,"abstract":"<p>Ceramics and composites, many of whose physicochemical properties significantly exceed similar properties of metals and their alloys, are processed qualitatively mainly by the electroerosion method. Despite the existing works, the mechanism of the initial stage of the removal of materials has not yet been identified. For a comprehensive understanding of the mechanism of the removal of dielectrics, a new model is proposed based on the experimental results obtained on an improved electroerosion installation. It was revealed that the initial stage of the removal of a dielectric material consists of three successive stages that are associated with the synergistic effect on the process of the anionic group of electrolytes, plasma flare, and the cavitation shock. This makes it possible to better understand the mechanism of the removal of composite and ceramic materials, which should contribute to ensuring the machinability of those materials and their wide use in promising technologies.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"712 - 718"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of Flavonoid Extract of Laurus nobilis Leaves as Corrosion Inhibitor for Pipelines of Reverse Osmosis Water and Study of Its Effects on Liver Enzymes and Hematological Parameters 评估作为反渗透水管道缓蚀剂的月桂叶黄酮提取物及其对肝脏酶和血液学参数的影响
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060091
Hadi Z. Al-Sawaad,  Esraa A. AL-Alyauie,  Arwa H. M. AL-Saeed

In this study, flavonoids were extracted from Laurus nobilis leaves, and the extract was evaluated as corrosion inhibitor for pipelines of reverse osmosis (RO) water at 25°C for different concentrations:1, 2, 3, 4, and 5 ppm, The extract demonstrated a high inhibition efficiency (96.3%) at 1 ppm. The effect of temperature on the inhibition efficiency for the optimal concentration of the flavonoid extract of 1 ppm was studied at 35, 45, and 55°C. The results revealed that the efficiency was reduced as temperature increased. Furthermore, the kinetic parameters like activation energy (E_{{text{a}}}^{*}), enthalpy of activation ΔH*, entropy of activation ΔS*, and Gibb’s free energy of activation ΔG* were calculated. Thus, the flavonoids extract of Laurus nobilis can be used as green inhibitor for corrosion because it does not contain toxic compounds. In addition, the effect of the flavonoids extract dissolved in the RO water on the liver enzymes and hematological parameters were studied after oral administration by male rabbits for 28 days. The results indicated no significant difference in the serum level of Alanine and Aspartate aminotransferase and alkaline phosphate, while the hemoglobin concentration and the red blood cells number increased after treatment with the flavonoids extract. Besides, application of the flavonoid extract revealed inhibition in the growth of Pseudomonas aeruginosa and Bacillus subtilis bacteria at 1 ppm concentration.

摘要本研究从月桂叶中提取黄酮类化合物,并对25°C条件下不同浓度(1、2、3、4和5 ppm)的反渗透(RO)水管道进行缓蚀试验%) at 1 ppm. The effect of temperature on the inhibition efficiency for the optimal concentration of the flavonoid extract of 1 ppm was studied at 35, 45, and 55°C. The results revealed that the efficiency was reduced as temperature increased. Furthermore, the kinetic parameters like activation energy (E_{{text{a}}}^{*}), enthalpy of activation ΔH*, entropy of activation ΔS*, and Gibb’s free energy of activation ΔG* were calculated. Thus, the flavonoids extract of Laurus nobilis can be used as green inhibitor for corrosion because it does not contain toxic compounds. In addition, the effect of the flavonoids extract dissolved in the RO water on the liver enzymes and hematological parameters were studied after oral administration by male rabbits for 28 days. The results indicated no significant difference in the serum level of Alanine and Aspartate aminotransferase and alkaline phosphate, while the hemoglobin concentration and the red blood cells number increased after treatment with the flavonoids extract. Besides, application of the flavonoid extract revealed inhibition in the growth of Pseudomonas aeruginosa and Bacillus subtilis bacteria at 1 ppm concentration.
{"title":"Evaluation of Flavonoid Extract of Laurus nobilis Leaves as Corrosion Inhibitor for Pipelines of Reverse Osmosis Water and Study of Its Effects on Liver Enzymes and Hematological Parameters","authors":"Hadi Z. Al-Sawaad,&nbsp; Esraa A. AL-Alyauie,&nbsp; Arwa H. M. AL-Saeed","doi":"10.3103/S1068375523060091","DOIUrl":"10.3103/S1068375523060091","url":null,"abstract":"<p>In this study, flavonoids were extracted from <i>Laurus nobilis</i> leaves, and the extract was evaluated as corrosion inhibitor for pipelines of reverse osmosis (RO) water at 25°C for different concentrations:1, 2, 3, 4, and 5 ppm, The extract demonstrated a high inhibition efficiency (96.3%) at 1 ppm. The effect of temperature on the inhibition efficiency for the optimal concentration of the flavonoid extract of 1 ppm was studied at 35, 45, and 55°C. The results revealed that the efficiency was reduced as temperature increased. Furthermore, the kinetic parameters like activation energy <span>(E_{{text{a}}}^{*})</span>, enthalpy of activation Δ<i>H</i>*, entropy of activation Δ<i>S</i>*, and Gibb’s free energy of activation Δ<i>G</i>* were calculated. Thus, the flavonoids extract of <i>Laurus nobilis</i> can be used as green inhibitor for corrosion because it does not contain toxic compounds. In addition, the effect of the flavonoids extract dissolved in the RO water on the liver enzymes and hematological parameters were studied after oral administration by male rabbits for 28 days. The results indicated no significant difference in the serum level of Alanine and Aspartate aminotransferase and alkaline phosphate, while the hemoglobin concentration and the red blood cells number increased after treatment with the flavonoids extract. Besides, application of the flavonoid extract revealed inhibition in the growth of <i>Pseudomonas aeruginosa</i> and <i>Bacillus subtilis</i> bacteria at 1 ppm concentration.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"841 - 848"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polarimetric Features of PEPC Polymer Doped with Photoisomerizable SY3 Azodye Chromophore 掺杂了可光异构化的 SY3 叠氮染料发色团的 PEPC 聚合物的偏振特性
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060029
E. A. Achimova, V. G. Abashkin, A. Yu. Meshalkin, C. S. Losmanschii, V. S. Botnari

Photo-induced anisotropy measurements were carried out in thin films of azopolymers PEPC with Solvent Yellow 3, with the concentrations of 10 and 30 wt % of polymers with azo groups in their side-chain. The experimental dependences of the azimuths of the probe beam at the pump beam angles for samples were studied. The photoinduced dependence of the sample birefringence of the probe beam at the incident polarization angle of the pump beam was carried out by the polarimetric method for the studied samples. The geometric phase of anisotropic carbazole-containing azopolymers, in contrast to the dynamic phase, can be measured by the proposed polarimetric method without involving interferometry methods. This is possible because the geometric phase is not controlled by the difference in optical paths but is the result of a change of polarization inside the films due to photoinduced changes in its spatial structure.

摘要采用溶剂黄3对偶氮聚合物PEPC薄膜进行了光致各向异性测量,其中侧链上有偶氮基团的聚合物浓度分别为10%和30%。研究了样品在泵浦光束角处探测光束方位角的实验依赖关系。用偏振法对所研究的样品进行了探针光束在泵浦光入射偏振角处的双折射光致依赖性分析。与动态相相相比,各向异性含咔唑偶氮聚合物的几何相可以用所提出的偏振法测量,而不涉及干涉测量方法。这是可能的,因为几何相位不是由光路的差异控制的,而是由于光诱导其空间结构的变化而引起的膜内偏振变化的结果。
{"title":"Polarimetric Features of PEPC Polymer Doped with Photoisomerizable SY3 Azodye Chromophore","authors":"E. A. Achimova,&nbsp;V. G. Abashkin,&nbsp;A. Yu. Meshalkin,&nbsp;C. S. Losmanschii,&nbsp;V. S. Botnari","doi":"10.3103/S1068375523060029","DOIUrl":"10.3103/S1068375523060029","url":null,"abstract":"<p>Photo-induced anisotropy measurements were carried out in thin films of azopolymers PEPC with Solvent Yellow 3, with the concentrations of 10 and 30 wt % of polymers with azo groups in their side-chain. The experimental dependences of the azimuths of the probe beam at the pump beam angles for samples were studied. The photoinduced dependence of the sample birefringence of the probe beam at the incident polarization angle of the pump beam was carried out by the polarimetric method for the studied samples. The geometric phase of anisotropic carbazole-containing azopolymers, in contrast to the dynamic phase, can be measured by the proposed polarimetric method without involving interferometry methods. This is possible because the geometric phase is not controlled by the difference in optical paths but is the result of a change of polarization inside the films due to photoinduced changes in its spatial structure.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"791 - 797"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Macroscopic Size Effect in the Composition and Properties of Alloys of Iron Group Metals with Tungsten Prepared by Induced Codeposition: Alloy Deposition Mechanism and Its Implications 诱导共沉积制备的铁钨合金成分和性能的宏观尺寸效应:合金沉积机制及其影响
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S106837552306008X
A. I. Dikusar, S. S. Belevskii

By the example of electrodeposition of Co–W alloys, this work shows that observed peculiarities of induced codeposition, including the macroscopic size effect in the composition and properties of deposited layers and their nanocrystallinity, are a consequence of the fact that the deposition-inducing species (a complex of the deposition-inducing metal) has the form of a high-molecular-weight polymer. Under the conditions of (relatively) high current loading on a plating electrolyte (high volume current density), this results in involvement of water molecules in the electrochemical process, formation of oxy-hydroxide layers, hydrogenation, an increase in the alloy tungsten content as a result of the side reaction of hydrogen evolution, alkalization of near-electrode region, and polymerization of the deposition-inducing metal species. Because of the presence of macroscopic size effect (i.e., the dependences of composition and properties of deposited coatings on the electrodeposition surface area), industrial scaling up of this electrodeposition technology will require maintaining the current loading on a plating bath at a constant level, along with other parameters traditional for electrochemical materials science.

摘要本文以Co-W合金电沉积为例,说明了诱导共沉积的特点,包括沉积层的组成和性质及其纳米结晶度的宏观尺寸效应,是诱导沉积物质(诱导沉积金属的络合物)具有高分子量聚合物形式的结果。在(相对)大电流负载电镀电解质(高体积电流密度)的条件下,这导致水分子参与电化学过程,形成氢氧化物层,氢化,由于析氢的副反应导致合金钨含量增加,近电极区域的碱化,以及沉积诱导金属的聚合。由于宏观尺寸效应的存在(即,沉积涂层的成分和性能依赖于电沉积表面积),这种电沉积技术的工业规模扩大将需要将电镀槽上的电流负载保持在恒定水平,以及电化学材料科学的其他传统参数。
{"title":"Macroscopic Size Effect in the Composition and Properties of Alloys of Iron Group Metals with Tungsten Prepared by Induced Codeposition: Alloy Deposition Mechanism and Its Implications","authors":"A. I. Dikusar,&nbsp;S. S. Belevskii","doi":"10.3103/S106837552306008X","DOIUrl":"10.3103/S106837552306008X","url":null,"abstract":"<p>By the example of electrodeposition of Co–W alloys, this work shows that observed peculiarities of induced codeposition, including the macroscopic size effect in the composition and properties of deposited layers and their nanocrystallinity, are a consequence of the fact that the deposition-inducing species (a complex of the deposition-inducing metal) has the form of a high-molecular-weight polymer. Under the conditions of (relatively) high current loading on a plating electrolyte (high volume current density), this results in involvement of water molecules in the electrochemical process, formation of oxy-hydroxide layers, hydrogenation, an increase in the alloy tungsten content as a result of the side reaction of hydrogen evolution, alkalization of near-electrode region, and polymerization of the deposition-inducing metal species. Because of the presence of macroscopic size effect (i.e., the dependences of composition and properties of deposited coatings on the electrodeposition surface area), industrial scaling up of this electrodeposition technology will require maintaining the current loading on a plating bath at a constant level, along with other parameters traditional for electrochemical materials science.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"699 - 711"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhancement of Oxide Coatings Quality Formed by Electrolytic Oxidation Methods on Inner Surfaces of Lengthy Products 提高通过电解氧化方法在长形产品内表面形成的氧化物涂层的质量
IF 0.9 Q3 Engineering Pub Date : 2023-12-14 DOI: 10.3103/S1068375523060169
O. E. Tchufistov, V. N. Malyshev, A. N. Zolkin, E. A. Tchufistov

It is known that the methods of electrolytic oxidation, including traditional anodizing and microarc oxidation, implemented according to classical schemes in electrolytic baths with mechanical, pneumatic, and magnetic mixers, cannot provide high-quality homogeneous oxide coatings on the inner surfaces of products made from valve metal alloys. In this paper, the principal possibility of obtaining high-quality uniform coatings on the extended internal surfaces of products, including the surfaces of deep holes, when an electrolyte solution is passed through them, is revealed. It has been experimentally proved that, based on the proposed approach, it is possible to process products with deep holes, achieving a ratio of both minimum and maximum values of the thickness and the breakdown voltage of coatings on the internal and external surfaces in a range of 0.85–0.93. A possibility of forming coatings exclusively on the internal surfaces of products without changing the state of their external surfaces, moreover, without using expensive electrolytic baths—inside internal cavities of products themselves, is shown. A good correlation between the values of the thickness and of the breakdown voltage of coatings has been established. As a result, a possibility of indirectly determine the coatings thickness based on the results of their breakdown voltage measuring has been substantiated.

摘要:众所周知,传统的电解氧化方法,包括传统的阳极氧化和微弧氧化,在机械、气动和磁力搅拌器的电解槽中进行,不能在阀门金属合金制成的产品的内表面提供高质量的均匀氧化涂层。本文揭示了当电解质溶液通过产品扩展内表面(包括深孔表面)时,在产品扩展内表面获得高质量均匀涂层的主要可能性。实验证明,基于所提出的方法,可以加工深孔产品,实现内外表面涂层厚度和击穿电压的最小值和最大值之比在0.85-0.93之间。在不改变产品外表面状态的情况下,仅在产品内表面形成涂层的可能性,而且,不使用昂贵的电解浴-产品本身的内腔。建立了涂层厚度值与击穿电压值之间的良好相关性。结果表明,根据击穿电压测量结果间接确定涂层厚度的可能性得到了证实。
{"title":"Enhancement of Oxide Coatings Quality Formed by Electrolytic Oxidation Methods on Inner Surfaces of Lengthy Products","authors":"O. E. Tchufistov,&nbsp;V. N. Malyshev,&nbsp;A. N. Zolkin,&nbsp;E. A. Tchufistov","doi":"10.3103/S1068375523060169","DOIUrl":"10.3103/S1068375523060169","url":null,"abstract":"<p>It is known that the methods of electrolytic oxidation, including traditional anodizing and microarc oxidation, implemented according to classical schemes in electrolytic baths with mechanical, pneumatic, and magnetic mixers, cannot provide high-quality homogeneous oxide coatings on the inner surfaces of products made from valve metal alloys. In this paper, the principal possibility of obtaining high-quality uniform coatings on the extended internal surfaces of products, including the surfaces of deep holes, when an electrolyte solution is passed through them, is revealed. It has been experimentally proved that, based on the proposed approach, it is possible to process products with deep holes, achieving a ratio of both minimum and maximum values of the thickness and the breakdown voltage of coatings on the internal and external surfaces in a range of 0.85–0.93. A possibility of forming coatings exclusively on the internal surfaces of products without changing the state of their external surfaces, moreover, without using expensive electrolytic baths—inside internal cavities of products themselves, is shown. A good correlation between the values of the thickness and of the breakdown voltage of coatings has been established. As a result, a possibility of indirectly determine the coatings thickness based on the results of their breakdown voltage measuring has been substantiated.</p>","PeriodicalId":782,"journal":{"name":"Surface Engineering and Applied Electrochemistry","volume":"59 6","pages":"728 - 733"},"PeriodicalIF":0.9,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138631608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Surface Engineering and Applied Electrochemistry
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1