首页 > 最新文献

Transactions of The Institute of Metal Finishing最新文献

英文 中文
Solution conductivity in electrodeposition processes 电沉积过程中的溶液导电性
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871266
G. Guvendik, D. Gabe
The significance and importance of solution conductivity for electrodeposition solutions and their efficient use are discussed. The dearth of reliable data is revealed and a collation of available data is provided for the commoner metals and solutions.
讨论了溶液电导率对电沉积溶液及其有效利用的意义和重要性。报告揭示了可靠数据的缺乏,并对常见金属和解决方案的现有数据进行了整理。
{"title":"Solution conductivity in electrodeposition processes","authors":"G. Guvendik, D. Gabe","doi":"10.1080/00202967.1999.11871266","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871266","url":null,"abstract":"The significance and importance of solution conductivity for electrodeposition solutions and their efficient use are discussed. The dearth of reliable data is revealed and a collation of available data is provided for the commoner metals and solutions.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871266","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
High speed electroplating in low-concentrate colloid-electrolyte baths 低浓度胶体电解液中高速电镀
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871277
I. D. Kudrjavtzeva
We define colloid-electrolytes as those plating baths where metal deposits are formed by reducing not only metal ions but also colloids and fine dispersions of metal compounds. Such dispersions in the field of the cathode (ie in the part of the diffusion layer where the rate of stirring usually tends to zero) may be treated in certain optimal cases as systems of mobile pores, giving rise to equilibrium and nonequilibrium electrokinetic phenomena, (electroosmosis, electrophoresis, diffusiophoresis and so on) and thus to efficient stirring. This results in reducing or eliminating the diffusion control and in an essential rise of the limiting current densities. Dispersions may arise by anode dissolution and by secondary cathodic processes (hydrogen evolution, dissociation of complexes). Adsorbed polyelectrolyte compounds may be good dispersion stabilizers, also giving rise to Marangoni instability, interphase convection and (or) turbulence and thus supplementing
我们将胶体电解质定义为那些电镀槽,其中金属沉积物不仅通过还原金属离子,还通过还原胶体和金属化合物的精细分散体而形成。在某些最佳情况下,阴极场中的这种分散(即在搅拌速率通常趋于零的扩散层部分)可以被视为可移动孔隙系统,从而产生平衡和非平衡电动现象(电渗透、电泳、扩散电泳等),从而产生有效的搅拌。这将减少或消除扩散控制,并导致极限电流密度的本质上升。分散可以通过阳极溶解和二次阴极过程(析氢,络合物的解离)产生。吸附的聚电解质化合物可能是良好的分散稳定剂,也会引起马兰戈尼不稳定性,相间对流和(或)湍流,从而补充
{"title":"High speed electroplating in low-concentrate colloid-electrolyte baths","authors":"I. D. Kudrjavtzeva","doi":"10.1080/00202967.1999.11871277","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871277","url":null,"abstract":"We define colloid-electrolytes as those plating baths where metal deposits are formed by reducing not only metal ions but also colloids and fine dispersions of metal compounds. Such dispersions in the field of the cathode (ie in the part of the diffusion layer where the rate of stirring usually tends to zero) may be treated in certain optimal cases as systems of mobile pores, giving rise to equilibrium and nonequilibrium electrokinetic phenomena, (electroosmosis, electrophoresis, diffusiophoresis and so on) and thus to efficient stirring. This results in reducing or eliminating the diffusion control and in an essential rise of the limiting current densities. Dispersions may arise by anode dissolution and by secondary cathodic processes (hydrogen evolution, dissociation of complexes). Adsorbed polyelectrolyte compounds may be good dispersion stabilizers, also giving rise to Marangoni instability, interphase convection and (or) turbulence and thus supplementing","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871277","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Effects of complexing agent on the morphology and porosity of electroless nickel deposits 络合剂对化学镀镍层形貌和孔隙率的影响
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871278
Ying Jin, Dong-bai Sun, Jingzhi Yu, C. Dong, Dejun Yang
Three kinds of complexing agents were selected to investigate their effects on the morphology and porosity of electroless nickel (EN) deposits on a mild steel substrate. The porosity of the EN coating was tested as a function of the variety of complexing agents with both an electrochemical technique and commonly used chemical spot tests. Meanwhile, the morphology and surface roughness of deposits were examined by atom force microscopy (AFM). It was found that the more stable is the nickel complex, the lower the roughness and the less the porosity of the coating. The reason for this is discussed, considering the complexing agent's effect on the deposition process of EN.
选择3种络合剂,研究了它们对低碳钢基体上化学镀镍(EN)镀层形貌和孔隙率的影响。采用电化学技术和常用的化学斑点试验,测试了EN涂层的孔隙率随各种络合剂的作用。同时,利用原子力显微镜(AFM)检测了镀层的形貌和表面粗糙度。结果表明,镍配合物越稳定,镀层的粗糙度越低,孔隙率越小。考虑到络合剂对EN沉积过程的影响,讨论了其原因。
{"title":"Effects of complexing agent on the morphology and porosity of electroless nickel deposits","authors":"Ying Jin, Dong-bai Sun, Jingzhi Yu, C. Dong, Dejun Yang","doi":"10.1080/00202967.1999.11871278","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871278","url":null,"abstract":"Three kinds of complexing agents were selected to investigate their effects on the morphology and porosity of electroless nickel (EN) deposits on a mild steel substrate. The porosity of the EN coating was tested as a function of the variety of complexing agents with both an electrochemical technique and commonly used chemical spot tests. Meanwhile, the morphology and surface roughness of deposits were examined by atom force microscopy (AFM). It was found that the more stable is the nickel complex, the lower the roughness and the less the porosity of the coating. The reason for this is discussed, considering the complexing agent's effect on the deposition process of EN.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871278","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
On the Performance and Mechanism of Ultrasonically Cleaning Metal Components with Environmentally Acceptable Organic Solvents 环境可接受有机溶剂超声清洗金属部件的性能及机理研究
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871290
A. Averill, J. Ingram, P. Nolan
SUMMARYExperimental results are presented which allow comparison between the cleaning performance of recently available environmentally friendly solvents and traditionally used solvents. Particular emphasis is given to considering the removal of different kinds of grease contamination from components with blind holes or crevices. The fundamental principles underlying the process of removal of organic contamination from metal surfaces with organic solvents are discussed and a simple mechanism postulated to explain the gradual decrease in the decontamination rate that occurs as the cleaning process progresses. It is considered most likely that the primary role of ultrasonification in the cleaning of metals is to promote detachment of contaminant from the surface rather than enhanced transport of dissolved material away from the surface/solvent interface.
摘要:实验结果提出,允许比较清洁性能的最近可用的环保溶剂和传统使用的溶剂。特别强调考虑从具有盲孔或缝隙的部件中去除不同种类的油脂污染。本文讨论了用有机溶剂从金属表面去除有机污染的基本原理,并假设了一个简单的机制来解释随着清洁过程的进行,去污率会逐渐降低。一般认为,超声波在金属清洗中的主要作用是促进污染物从表面脱离,而不是增强溶解物质从表面/溶剂界面的转移。
{"title":"On the Performance and Mechanism of Ultrasonically Cleaning Metal Components with Environmentally Acceptable Organic Solvents","authors":"A. Averill, J. Ingram, P. Nolan","doi":"10.1080/00202967.1999.11871290","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871290","url":null,"abstract":"SUMMARYExperimental results are presented which allow comparison between the cleaning performance of recently available environmentally friendly solvents and traditionally used solvents. Particular emphasis is given to considering the removal of different kinds of grease contamination from components with blind holes or crevices. The fundamental principles underlying the process of removal of organic contamination from metal surfaces with organic solvents are discussed and a simple mechanism postulated to explain the gradual decrease in the decontamination rate that occurs as the cleaning process progresses. It is considered most likely that the primary role of ultrasonification in the cleaning of metals is to promote detachment of contaminant from the surface rather than enhanced transport of dissolved material away from the surface/solvent interface.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871290","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58743416","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
The role of Cu(II) in the process of forming non-stoichiometric copper sulphide coatings by a chemical route Cu(II)在化学途径形成非化学计量硫化铜涂层过程中的作用
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871241
J. Vinkevičius, A. Žielienė, G. Valiulienė
The composition of non-stoichiometric copper sulphide (Cu) coatings obtained during the interaction of Cu(II) with Na 2 S n (n = 1-4) has been investigated by cyclic voltammetry in 0.05 M H 2 SO 4 solution. The overall reaction has been shown to correspond to the equation. 4 Na 2 S 0 + 2 Cu(OH) 2ad →Cu 2 S ad + (4n-3) S 0 ad + 4 NaOH + 2 Na 2 S in which S o /Cu = (4n 3 1/2). Such a stoichiometry of reaction has been explained by the formation of an intermediate the adsorbed Cut II) polysulphide (Na 2 CuS n ) or a polynuclear complex (Na 2 Cu 2 S and its decomposition in simultaneous intramolecular redox reaction between Cu(II) and S 2 . When increasing n from I to 4/2-x) increases from 1.91 to 1.99 approximately.
在0.05 M h2so4溶液中,用循环伏安法研究了Cu(II)与na2sn (n = 1-4)相互作用得到的非化学计量的硫化铜(Cu)涂层的组成。总的反应已被证明符合这个方程。4na 2s0 + 2cu (OH) 2ad→cu2sad + (4n-3) s0 ad + 4naoh + 2na 2s,其中S o /Cu = (4n 3 1/2)。在Cu(II)和s2之间的分子内氧化还原反应中,吸附的Cut II多硫化物(Na 2cu n)或多核配合物(Na 2cu 2s)的形成及其分解可以解释这种化学计量。当n从1增加到4/2 (x)时,大约从1.91增加到1.99。
{"title":"The role of Cu(II) in the process of forming non-stoichiometric copper sulphide coatings by a chemical route","authors":"J. Vinkevičius, A. Žielienė, G. Valiulienė","doi":"10.1080/00202967.1999.11871241","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871241","url":null,"abstract":"The composition of non-stoichiometric copper sulphide (Cu) coatings obtained during the interaction of Cu(II) with Na 2 S n (n = 1-4) has been investigated by cyclic voltammetry in 0.05 M H 2 SO 4 solution. The overall reaction has been shown to correspond to the equation. 4 Na 2 S 0 + 2 Cu(OH) 2ad →Cu 2 S ad + (4n-3) S 0 ad + 4 NaOH + 2 Na 2 S in which S o /Cu = (4n 3 1/2). Such a stoichiometry of reaction has been explained by the formation of an intermediate the adsorbed Cut II) polysulphide (Na 2 CuS n ) or a polynuclear complex (Na 2 Cu 2 S and its decomposition in simultaneous intramolecular redox reaction between Cu(II) and S 2 . When increasing n from I to 4/2-x) increases from 1.91 to 1.99 approximately.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871241","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
Mechanism of Boron Codeposition in Electrodeposited Ni-B Alloy Films and Calculation of the Amount of Codeposited Boron 电沉积Ni-B合金膜中硼共沉积机理及共沉积硼量的计算
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871243
M. Onoda, K. Shimizu, Yukio Tateishi, Tohru Watanabe
SUMMARYWe electrodeposited Ni-B ahoy films using a rotary electrode under various plating conditions and investigated the mechanism of the codeposition of B into the plated films by analyzing the relationship between the electrodeposition conditions and the composition of the plated films, as well as by analyzing electrochemical measurements. We reached the following conclusions: 1) In Ni-B alloy plating by electrodeposition, use of a rotary electrode expands the useful current density regions compared to a static bath.2) Unionized TMAB is present in the plating solution, and the deposition rate of B is related to the thickness of the diffusion layer at the cathode surface, regardless of the electrode potential. Accordingly, the amount of codedeposited B can he calculated from v0.7 and l/I, i.e., peripheral speed and current density.
摘要:利用旋转电极在不同的电镀条件下电沉积了Ni-B - ahoy薄膜,通过分析电沉积条件与镀层成分的关系以及电化学测量结果的分析,探讨了B在镀层中共沉积的机理。得到以下结论:1)电沉积镀Ni-B合金时,旋转电极的使用比静态电极扩大了有效电流密度区域。2)镀液中存在游离化的TMAB, B的沉积速率与阴极表面扩散层的厚度有关,而与电极电位无关。因此,可以从v0.7和l/I(即外设速度和电流密度)计算出编码沉积的B量。
{"title":"Mechanism of Boron Codeposition in Electrodeposited Ni-B Alloy Films and Calculation of the Amount of Codeposited Boron","authors":"M. Onoda, K. Shimizu, Yukio Tateishi, Tohru Watanabe","doi":"10.1080/00202967.1999.11871243","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871243","url":null,"abstract":"SUMMARYWe electrodeposited Ni-B ahoy films using a rotary electrode under various plating conditions and investigated the mechanism of the codeposition of B into the plated films by analyzing the relationship between the electrodeposition conditions and the composition of the plated films, as well as by analyzing electrochemical measurements. We reached the following conclusions: 1) In Ni-B alloy plating by electrodeposition, use of a rotary electrode expands the useful current density regions compared to a static bath.2) Unionized TMAB is present in the plating solution, and the deposition rate of B is related to the thickness of the diffusion layer at the cathode surface, regardless of the electrode potential. Accordingly, the amount of codedeposited B can he calculated from v0.7 and l/I, i.e., peripheral speed and current density.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871243","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58741694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Cathode growth stability of electrodeposited metal matrix particulate composites 电沉积金属基颗粒复合材料的阴极生长稳定性
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871268
B. Bozzini
A simple model is proposed correlating operating conditions (electrochemical kinetic behaviour of the metal matrix deposition process, concentration of suspended particles, particle dimensions, hydrodynamic conditions) and cathode growth stability for electrodeposited metal matrix particulate composites with dispersions of non-conducling particies. Even though variations of all the considered variables have a bearing on growth stability, the most important single effect is polarisation (as, e.g., expressed by the local Tafel slope): the deposition of metal with high polarisation makes codeposition possible and renders viable the achievement of sufficiently smooth and thick materials; metals deposited at low overvoltage are mostly associated with unsuccessful composite plating The predictions of the model were confirmed with deposition experiments, cathode stability was judged according to SEM in-plane and cross-sectional micrographs as well as by roughness measurements.
提出了一个简单的模型,将电沉积金属基颗粒复合材料的操作条件(金属基沉积过程的电化学动力学行为、悬浮颗粒浓度、颗粒尺寸、流体动力条件)和阴极生长稳定性与非导电颗粒的分散相关联。尽管所有考虑的变量的变化都对生长稳定性有影响,但最重要的单一影响是极化(例如,用局部塔菲尔斜率表示):高极化的金属沉积使共沉积成为可能,并使获得足够光滑和厚的材料成为可能;沉积实验证实了该模型的预测,并通过扫描电子显微镜(SEM)面内和截面显微照片以及粗糙度测量来判断阴极的稳定性。
{"title":"Cathode growth stability of electrodeposited metal matrix particulate composites","authors":"B. Bozzini","doi":"10.1080/00202967.1999.11871268","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871268","url":null,"abstract":"A simple model is proposed correlating operating conditions (electrochemical kinetic behaviour of the metal matrix deposition process, concentration of suspended particles, particle dimensions, hydrodynamic conditions) and cathode growth stability for electrodeposited metal matrix particulate composites with dispersions of non-conducling particies. Even though variations of all the considered variables have a bearing on growth stability, the most important single effect is polarisation (as, e.g., expressed by the local Tafel slope): the deposition of metal with high polarisation makes codeposition possible and renders viable the achievement of sufficiently smooth and thick materials; metals deposited at low overvoltage are mostly associated with unsuccessful composite plating The predictions of the model were confirmed with deposition experiments, cathode stability was judged according to SEM in-plane and cross-sectional micrographs as well as by roughness measurements.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871268","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58742815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
TiN coatings modified by an interlayer of electroplated chromium on mild steel 在低碳钢上电镀铬层对TiN涂层进行改性
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871282
Kulwant Singh, D. Wasnik, A. K. Grover, M. Totlani, A. K. Suri
TiN films on mild steel were deposited by reactive d.c. magnetron sputtering; electroplated chromiunt was incorporated as an interlayer, Surface hardness, measured by the Knoop indentation method under a load of 25 gf, phase analysis by the X-ray diffraction method and corrosion behaviour by the potentiodynamic measurement technique of these coatings have been evaluated. Surface hardness values were found to increase from about 1000-1100 for TiN coatings on mild steel to about 1800-1900 (HK 25 ) for TiN coatings with chromium as interlayer, Potentiodynamic corrosion tests, performed in IN H 2 SO 4 solutions, have shown that with a chromium interlayer the corrosion resistance increases significantly as compared to TiN only sputtered coatings on mild steel samples. No spalling of TiN coatings was observed during full sweep voltage of -1000 mV to +1000 mV when they were tested with a chromium interlayer.
采用反应直流磁控溅射技术在低碳钢表面沉积TiN薄膜;在25 gf载荷下,用Knoop压痕法测定了镀层的表面硬度,用x射线衍射法测定了镀层的物相,用动电位法测定了镀层的腐蚀行为。发现表面硬度值从低碳钢上的TiN涂层的约1000-1100增加到以铬为中间层的TiN涂层的约1800-1900 (hk25),在in h2so4溶液中进行的电位腐蚀试验表明,与低碳钢样品上的TiN溅射涂层相比,有铬中间层的耐腐蚀性显着增加。在-1000 mV至+1000 mV的全扫描电压范围内,镀铬层未观察到TiN涂层的剥落。
{"title":"TiN coatings modified by an interlayer of electroplated chromium on mild steel","authors":"Kulwant Singh, D. Wasnik, A. K. Grover, M. Totlani, A. K. Suri","doi":"10.1080/00202967.1999.11871282","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871282","url":null,"abstract":"TiN films on mild steel were deposited by reactive d.c. magnetron sputtering; electroplated chromiunt was incorporated as an interlayer, Surface hardness, measured by the Knoop indentation method under a load of 25 gf, phase analysis by the X-ray diffraction method and corrosion behaviour by the potentiodynamic measurement technique of these coatings have been evaluated. Surface hardness values were found to increase from about 1000-1100 for TiN coatings on mild steel to about 1800-1900 (HK 25 ) for TiN coatings with chromium as interlayer, Potentiodynamic corrosion tests, performed in IN H 2 SO 4 solutions, have shown that with a chromium interlayer the corrosion resistance increases significantly as compared to TiN only sputtered coatings on mild steel samples. No spalling of TiN coatings was observed during full sweep voltage of -1000 mV to +1000 mV when they were tested with a chromium interlayer.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871282","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58743044","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Electrodeposition of Copper-Nickel Alloys from a Citrate Bath Containing Boric Acid 含硼酸柠檬酸浴中电沉积铜镍合金的研究
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871292
S. S. Rehim, S. A. Wahab, S. Rashwan, Z. M. Anwar
Copper-nickel alloys have been electrodeposited on steel substrates from a bath containing copper sulphate, nickel sulphate, sodium sulphate, sodium citrate and boric acid. Galvanostatic cathodic polarization, cathodic current efficiency and composition of the alloys were studied as influenced by bath composition, current density and temperature. The bath is characterized by high cathodic current efficiency. Current density is found to strongly influence the composition of the deposits. At low current densities (lower than a certain transition current density), a copper-rich alloy is deposited with copper (the more noble metal) being the preferentially deposited metal. At larger current densities, nickel becomes the nobler metal and is deposited preferentially. The magnitude of the transition current density depends upon the bath composition and temperature. The structure and surface morphology of the as-deposited alloys were examined by XRD and SEM. The results reveal the presence of single solid solution phase with face centred cubic structure. The morphology of the deposits is mainly controlled by the alloy composition.
铜镍合金已在含有硫酸铜、硫酸镍、硫酸钠、柠檬酸钠和硼酸的镀液中电沉积在钢基体上。研究了镀液成分、电流密度和温度对合金恒流阴极极化、阴极电流效率和合金成分的影响。该电解槽具有阴极电流效率高的特点。发现电流密度对沉积物的组成有很大的影响。在低电流密度(低于一定的过渡电流密度)下,富铜合金被沉积,铜(更贵重的金属)是优先沉积的金属。在较大的电流密度下,镍成为较贵重的金属,并优先沉积。跃迁电流密度的大小取决于镀液成分和温度。采用XRD和SEM对合金的结构和表面形貌进行了表征。结果表明,存在面心立方结构的单一固溶相。镀层的形貌主要受合金成分的控制。
{"title":"Electrodeposition of Copper-Nickel Alloys from a Citrate Bath Containing Boric Acid","authors":"S. S. Rehim, S. A. Wahab, S. Rashwan, Z. M. Anwar","doi":"10.1080/00202967.1999.11871292","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871292","url":null,"abstract":"Copper-nickel alloys have been electrodeposited on steel substrates from a bath containing copper sulphate, nickel sulphate, sodium sulphate, sodium citrate and boric acid. Galvanostatic cathodic polarization, cathodic current efficiency and composition of the alloys were studied as influenced by bath composition, current density and temperature. The bath is characterized by high cathodic current efficiency. Current density is found to strongly influence the composition of the deposits. At low current densities (lower than a certain transition current density), a copper-rich alloy is deposited with copper (the more noble metal) being the preferentially deposited metal. At larger current densities, nickel becomes the nobler metal and is deposited preferentially. The magnitude of the transition current density depends upon the bath composition and temperature. The structure and surface morphology of the as-deposited alloys were examined by XRD and SEM. The results reveal the presence of single solid solution phase with face centred cubic structure. The morphology of the deposits is mainly controlled by the alloy composition.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871292","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58743280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Texture development in electrodeposited nanocrystalline Ni-Mn-Fe alloys 电沉积纳米晶Ni-Mn-Fe合金的织构发展
IF 1.9 4区 材料科学 Q2 Materials Science Pub Date : 1999-01-01 DOI: 10.1080/00202967.1999.11871288
M. Ananth
Ni-Mn-Fe alloys were electrodeposited from three compositionally altered Ni-Mn electrolytes containing a small amount of FeSO 4 (NH 4 ) 2 SO 4 .6H 2 O (10gl -1 ). Texture development in the resultant co-deposits was investigated with opticical colour polarisation microscopy. Addition of Fe in the electrodeposited Ni-Mn system results in the development of additional textures. Most of the samples show three different types of textures though the texture types are characteristic of the bath composition and deposition CD.
采用三种含少量feso4 (nh4) 2so4.6 h2o (10gl -1)的Ni-Mn电解液制备Ni-Mn- fe合金。用光学彩色偏光显微镜研究了所产生的共沉积的织构发展。在电沉积Ni-Mn体系中加入Fe会导致附加织构的形成。大多数样品呈现出三种不同类型的织构,但织构类型是浴液成分和沉积CD的特征。
{"title":"Texture development in electrodeposited nanocrystalline Ni-Mn-Fe alloys","authors":"M. Ananth","doi":"10.1080/00202967.1999.11871288","DOIUrl":"https://doi.org/10.1080/00202967.1999.11871288","url":null,"abstract":"Ni-Mn-Fe alloys were electrodeposited from three compositionally altered Ni-Mn electrolytes containing a small amount of FeSO 4 (NH 4 ) 2 SO 4 .6H 2 O (10gl -1 ). Texture development in the resultant co-deposits was investigated with opticical colour polarisation microscopy. Addition of Fe in the electrodeposited Ni-Mn system results in the development of additional textures. Most of the samples show three different types of textures though the texture types are characteristic of the bath composition and deposition CD.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":null,"pages":null},"PeriodicalIF":1.9,"publicationDate":"1999-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00202967.1999.11871288","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"58743297","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 5
期刊
Transactions of The Institute of Metal Finishing
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