In this paper the effect of lattice friction stress on the process of dislocations annihilation is considered using dislocation dynamics method. It is shown that if dislocations of the opposite sign are located in the area where their own tension is greater than the friction stress, they annihilate. Consideration of this fact allows to connect the microscopic processes of annihilation with evolution of dislocation density in the sample under small external stresses and unloading. The area in which annihilation occurs is calculated to be proportional to the square of the friction stress/shear modulus ratio.It is also shown that the parameter responsible for the rate of dislocation annihilation depends on the cube of the ratio of the friction stress to the shear modulus, because it is inversely proportional to the number of annihilating dislocations and the time in which a dislocation pair annihilates.
{"title":"Computer Modelling of Influence of Crystal Lattice Friction Stress on the Dislocation Annihilation Process","authors":"K. Borysovska","doi":"10.4028/p-hpu55n","DOIUrl":"https://doi.org/10.4028/p-hpu55n","url":null,"abstract":"In this paper the effect of lattice friction stress on the process of dislocations annihilation is considered using dislocation dynamics method. It is shown that if dislocations of the opposite sign are located in the area where their own tension is greater than the friction stress, they annihilate. Consideration of this fact allows to connect the microscopic processes of annihilation with evolution of dislocation density in the sample under small external stresses and unloading. The area in which annihilation occurs is calculated to be proportional to the square of the friction stress/shear modulus ratio.It is also shown that the parameter responsible for the rate of dislocation annihilation depends on the cube of the ratio of the friction stress to the shear modulus, because it is inversely proportional to the number of annihilating dislocations and the time in which a dislocation pair annihilates.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"55 1","pages":"31 - 43"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84783523","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}
Kalpana Sharma, T. Gupta, S. Vaijayanthimala, N. R. Yogamalar, V. Adimule
In the world of energy storage devices, Supercapacitors occupy a very unique and pivotal position. Their rapid rate of discharge gives them high power density. They have high reversibility and are robust to a large number of charging and discharging cycles. Sustained research has revealed a certain set of properties and behaviour, that every prospective candidate supercapacitor material must possess. Metal organic frameworks (MOFs) with unique textural properties, excellent specific surface area, tuneable porous structure and distinctively advantageous electrochemical behaviour are prominent candidates for the use in energy storage applications. However pristine MOF based materials are handicapped due to their low conductivity and poor mechanical stability. These inherent deficiencies can be overcome by hybridizing pristine MOFs with other materials like carbon materials (Activated Carbon, Graphene and Carbon Nano Tubes), conducting polymers, metals, and small molecules through variety of methods. This review puts the spotlight on the utilization, growth and various forms of hybrid materials based on MOFs for supercapacitor applications. It also highlights the various surface engineering techniques on the materials for high potential applications.
{"title":"Hybrid MOFs Supercapacitor: A Mini Review","authors":"Kalpana Sharma, T. Gupta, S. Vaijayanthimala, N. R. Yogamalar, V. Adimule","doi":"10.4028/p-q47uy2","DOIUrl":"https://doi.org/10.4028/p-q47uy2","url":null,"abstract":"In the world of energy storage devices, Supercapacitors occupy a very unique and pivotal position. Their rapid rate of discharge gives them high power density. They have high reversibility and are robust to a large number of charging and discharging cycles. Sustained research has revealed a certain set of properties and behaviour, that every prospective candidate supercapacitor material must possess. Metal organic frameworks (MOFs) with unique textural properties, excellent specific surface area, tuneable porous structure and distinctively advantageous electrochemical behaviour are prominent candidates for the use in energy storage applications. However pristine MOF based materials are handicapped due to their low conductivity and poor mechanical stability. These inherent deficiencies can be overcome by hybridizing pristine MOFs with other materials like carbon materials (Activated Carbon, Graphene and Carbon Nano Tubes), conducting polymers, metals, and small molecules through variety of methods. This review puts the spotlight on the utilization, growth and various forms of hybrid materials based on MOFs for supercapacitor applications. It also highlights the various surface engineering techniques on the materials for high potential applications.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"116 1","pages":"57 - 76"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81008457","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}
{"title":"Properties and Technological Features of Materials","authors":"V. Adimule, Rajendrachari Shashanka","doi":"10.4028/b-i6lkbs","DOIUrl":"https://doi.org/10.4028/b-i6lkbs","url":null,"abstract":"","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"156 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139369120","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}
Santosh S Nandi, V. Adimule, S. S. Kerur, Abhinay Gupta, Sateesh Hosmane, S. Batakurki
In the present research work, carbon nanosphere (5 wt. %, 10 wt. % and 15 wt. %)/Zr- based metal organic frame works (CNS: Zr (II)-MOFs) with different molar ratios of the legend 4-{[(1E)-1-Hydroxy-3-Oxoprop-1-En-2-yl] Sulfanyl} Benzoic Acid (HOSBA) have been successfully synthesized by hydrothermal method. Studies using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) have validated certain structural, optical, and morphological features. The supercapacitance performance of the synthesized MOFs was investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). At a current density of 0.5 A g-1 and at a scan rate of 10 mV/s, the 15% CNS doped Zr-MOF demonstrated highest specific capacitance (Cs) of 239.4 F g-1. 15 wt.% CNS doped Zr-MOF proven power density of 2100 W kg-1 and maximum energy density of 14.82 Wh Kg-1 with capacitive retention of 77.63 % following 2000 cycles mark this combination a good for supercapacitors (SCs) material. Regardless of the synthetic conditions, we achieved MOFs which exhibited hetero structure formation with spherical morphologies. The results open us new and energy approach for the supercapacitor of the Zr-metal based MOFs and applications in the photonics, optoelectronics, and promising electrode material for electrochemical energy storage systems.
在本研究中，采用水热法成功合成了4-{[(1E)-1-羟基-3-氧丙基-1- en -2-基]磺胺基苯甲酸(HOSBA)的不同摩尔比的碳纳米球(5wt . %， 10wt . %和15wt . %)/Zr基金属有机骨架(CNS: Zr (II)- mofs)。利用傅里叶变换红外光谱(FT-IR)、x射线衍射(XRD)、扫描电子显微镜(SEM)和热重分析(TGA)的研究证实了某些结构、光学和形态特征。利用循环伏安法(CV)和电化学阻抗谱(EIS)研究了合成的MOFs的超电容性能。当电流密度为0.5 a g-1，扫描速率为10 mV/s时，掺15% CNS的Zr-MOF的比电容(Cs)最高，为239.4 F -1。15 wt.% CNS掺杂Zr-MOF证明功率密度为2100 W kg-1，最大能量密度为14.82 Wh kg-1，在2000次循环后电容保持率为77.63%，这标志着这种组合是超级电容器(SCs)材料的良好选择。无论合成条件如何，我们都获得了具有球形异质结构的mof。研究结果为zr金属基mof的超级电容器及其在光子学、光电子学、电化学储能系统电极材料等方面的应用开辟了新的途径。
{"title":"Electrochemical High-Performance Hybrid Supercapacitors of Carbon Nanosphere Doped 3D Zr (II) Linked 4-{[(1E)-1-Hydroxy-3-Oxoprop-1-En-2-Yl]Sulfanyl}Benzoic Acid Metal Organic Frameworks","authors":"Santosh S Nandi, V. Adimule, S. S. Kerur, Abhinay Gupta, Sateesh Hosmane, S. Batakurki","doi":"10.4028/p-44gvkk","DOIUrl":"https://doi.org/10.4028/p-44gvkk","url":null,"abstract":"In the present research work, carbon nanosphere (5 wt. %, 10 wt. % and 15 wt. %)/Zr- based metal organic frame works (CNS: Zr (II)-MOFs) with different molar ratios of the legend 4-{[(1E)-1-Hydroxy-3-Oxoprop-1-En-2-yl] Sulfanyl} Benzoic Acid (HOSBA) have been successfully synthesized by hydrothermal method. Studies using Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and thermogravimetric analysis (TGA) have validated certain structural, optical, and morphological features. The supercapacitance performance of the synthesized MOFs was investigated using cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). At a current density of 0.5 A g-1 and at a scan rate of 10 mV/s, the 15% CNS doped Zr-MOF demonstrated highest specific capacitance (Cs) of 239.4 F g-1. 15 wt.% CNS doped Zr-MOF proven power density of 2100 W kg-1 and maximum energy density of 14.82 Wh Kg-1 with capacitive retention of 77.63 % following 2000 cycles mark this combination a good for supercapacitors (SCs) material. Regardless of the synthetic conditions, we achieved MOFs which exhibited hetero structure formation with spherical morphologies. The results open us new and energy approach for the supercapacitor of the Zr-metal based MOFs and applications in the photonics, optoelectronics, and promising electrode material for electrochemical energy storage systems.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"252 1","pages":"87 - 100"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73135274","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}
The present study deals with the effect of the Diatomite (D) microcomposite with and without chemical modification in a polypropylene (iPP) blend. The objective is to achieve a material with a better performance at a lower cost and more accessible and more suitable processing. The chemical surface modification of Diatomite (MD) was achieved using a crosslinking system based on a mixture of sulfur, accelerator, and peroxide. The iPP/Diatomite composite was prepared by batch melt mixing in a Brabender Plasti-Corde under intense shearing at high temperatures and varying the Diatomite content from 0 to 15 wt%. The rheological behavior was examined by monitoring the Brabender Plasti-Corde torque/time rheographs. Different techniques were used to characterize the sample: Fourier transform infrared spectroscopy (FTIR), WAXS, SEM, and DSC. In addition, tensile strength tests and impact strength mechanical tests were conducted to study the performance. It was found that chemical modification strongly affected rheological behavior and generated a new rheological characteristic compared to the composites without modification. This has induced a new structure form that has improved mechanical properties. Moreover, the chemical modification used and due to its simplicity, can be successfully used on an industrial scale with the appropriate process.
{"title":"Effect of the Chemical Modification of Diatomite/Isotactic Polypropylene Composite on the Rheological, Morphological and Mechanical Properties","authors":"Rouag Hichem, S. Bouhelal","doi":"10.4028/p-956acc","DOIUrl":"https://doi.org/10.4028/p-956acc","url":null,"abstract":"The present study deals with the effect of the Diatomite (D) microcomposite with and without chemical modification in a polypropylene (iPP) blend. The objective is to achieve a material with a better performance at a lower cost and more accessible and more suitable processing. The chemical surface modification of Diatomite (MD) was achieved using a crosslinking system based on a mixture of sulfur, accelerator, and peroxide. The iPP/Diatomite composite was prepared by batch melt mixing in a Brabender Plasti-Corde under intense shearing at high temperatures and varying the Diatomite content from 0 to 15 wt%. The rheological behavior was examined by monitoring the Brabender Plasti-Corde torque/time rheographs. Different techniques were used to characterize the sample: Fourier transform infrared spectroscopy (FTIR), WAXS, SEM, and DSC. In addition, tensile strength tests and impact strength mechanical tests were conducted to study the performance. It was found that chemical modification strongly affected rheological behavior and generated a new rheological characteristic compared to the composites without modification. This has induced a new structure form that has improved mechanical properties. Moreover, the chemical modification used and due to its simplicity, can be successfully used on an industrial scale with the appropriate process.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"31 1","pages":"121 - 136"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82005735","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}
Friction stir welding is now increasingly being applied to joining aluminum alloys and other non-ferrous metals because the process has been established to be more suitable for joining soft metals. Compared with the facilities required for fusion welding, procuring friction stir welding machine is capital intensive and its utilization in the underdeveloped nations is very scanty. In this work, some experimental works were done so as determine the optimized process parameters for friction stir welding of aluminium alloys using an adapted vertical milling machine. The focus is to optimize the friction stir welding of AA1100 using an adapted vertical milling machine so as to obtain high quality weldments in terms of hardness and tensile strength. Friction stir welding of AA1100 was performed within a process window. The process parameters were optimized for improved hardness and tensile strength. The hardness property of the welded joints was measured using Brinnel hardness tester while the tensile strength was measured using Instron universal testing machine. Within the range of parameters utilized in this work, the hardness and tensile strength of the friction stir welded joint of AA1100 ranged between 15.30—35.32 BHN and 48.66 – 99.12 MPa respectively. The highest hardness value of 35.32 BHN was found at optimum parametric setting of 900 rpm rotational speed, 40 mm/min traverse speed and 2o tilt angle while the highest tensile strength of 99.12 MPa was obtained at optimal processing parameters of 900 rpm rotational speed, 25 mm/min traverse speed and 2o tilt angle. The ANOVA revealed that rotational speed followed by tilt angle has the most significant effect on the tensile strength of the weldment. The tilt angle and the traverse speed effects were found significant on the hardness of the weldments.
{"title":"Parametric Optimization of Aluminium Alloy 1100 Friction Stir Welding Using Adapted Vertical Milling Machine","authors":"T. Abioye, Ogunleye Ojo Olugbusi","doi":"10.4028/p-3p46ef","DOIUrl":"https://doi.org/10.4028/p-3p46ef","url":null,"abstract":"Friction stir welding is now increasingly being applied to joining aluminum alloys and other non-ferrous metals because the process has been established to be more suitable for joining soft metals. Compared with the facilities required for fusion welding, procuring friction stir welding machine is capital intensive and its utilization in the underdeveloped nations is very scanty. In this work, some experimental works were done so as determine the optimized process parameters for friction stir welding of aluminium alloys using an adapted vertical milling machine. The focus is to optimize the friction stir welding of AA1100 using an adapted vertical milling machine so as to obtain high quality weldments in terms of hardness and tensile strength. Friction stir welding of AA1100 was performed within a process window. The process parameters were optimized for improved hardness and tensile strength. The hardness property of the welded joints was measured using Brinnel hardness tester while the tensile strength was measured using Instron universal testing machine. Within the range of parameters utilized in this work, the hardness and tensile strength of the friction stir welded joint of AA1100 ranged between 15.30—35.32 BHN and 48.66 – 99.12 MPa respectively. The highest hardness value of 35.32 BHN was found at optimum parametric setting of 900 rpm rotational speed, 40 mm/min traverse speed and 2o tilt angle while the highest tensile strength of 99.12 MPa was obtained at optimal processing parameters of 900 rpm rotational speed, 25 mm/min traverse speed and 2o tilt angle. The ANOVA revealed that rotational speed followed by tilt angle has the most significant effect on the tensile strength of the weldment. The tilt angle and the traverse speed effects were found significant on the hardness of the weldments.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"6 1","pages":"3 - 16"},"PeriodicalIF":0.0,"publicationDate":"2023-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87304438","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}
BaWO4 samples prepared by the chemical precipitation method were structurally characterized by X-ray diffraction and scanning electron microscopic measurements. The results confirm the tetragonal scheelite-type structure of the BaWO4 sample. The dependence of εꞌ, tanδ, and ac conductivity with frequency and temperature was studied for the nanocrystalline BaWO4 calcined samples. It is found that all these factors hinge on temperature and frequency. The values of εꞌ and tanδ are high at low frequencies and their values decrease quickly with the increase in frequency. Both εꞌ and tanδ attain steady values at high frequency regime. The space charge polarization is the cause of exponential decrease of εꞌ at the low frequency. It is also found that the calcination temperature is a key factor in determining the dielectric properties of a material. The low and steady value of the dissipation factor and an almost steady value of the εꞌ suggest the suitability of BaWO4 materials in low-temperature co-fired ceramic applications. The deviation of ac conductivity against frequency comply with Jonscher’s power law, however, a small deviation in the low-frequency region is due to the Maxwell-Wagner-type effect.
{"title":"Structural and Dielectric Characterization of Nanocrystalline BaWO4","authors":"Seenamol K. Stephen, F. Xavier, T. Varghese","doi":"10.4028/p-w4519m","DOIUrl":"https://doi.org/10.4028/p-w4519m","url":null,"abstract":"BaWO4 samples prepared by the chemical precipitation method were structurally characterized by X-ray diffraction and scanning electron microscopic measurements. The results confirm the tetragonal scheelite-type structure of the BaWO4 sample. The dependence of εꞌ, tanδ, and ac conductivity with frequency and temperature was studied for the nanocrystalline BaWO4 calcined samples. It is found that all these factors hinge on temperature and frequency. The values of εꞌ and tanδ are high at low frequencies and their values decrease quickly with the increase in frequency. Both εꞌ and tanδ attain steady values at high frequency regime. The space charge polarization is the cause of exponential decrease of εꞌ at the low frequency. It is also found that the calcination temperature is a key factor in determining the dielectric properties of a material. The low and steady value of the dissipation factor and an almost steady value of the εꞌ suggest the suitability of BaWO4 materials in low-temperature co-fired ceramic applications. The deviation of ac conductivity against frequency comply with Jonscher’s power law, however, a small deviation in the low-frequency region is due to the Maxwell-Wagner-type effect.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"29 1","pages":"119 - 127"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77115451","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}
Himadri Duwarah, J. Devi, N. Sharma, K. Saikia, P. Datta
This paper reports the synthesis of ZnS Quantum Dots (QDs) embedded in PVA by aqueous precipitation method and its application in antibacterial as well as to find or estimation of Escherichia coli (E.coli) concentration by using ZnS/PVA QD based mem-mode nanodevices. The as-synthesized ZnS/PVA samples are characterized by UV-Vis spectroscopy (UV), Photo luminescence (PL), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). Antibacterial property of ZnS/PVA QDs against gram positive (S.aureus) as well as gram negative (E.coli) are tested. The antibacterial property is found to be more in S.aureus in comparision to E.coli. Mem-behaviour of the as-fabricated devices is observed through electrical characterization. COMSOL MP Software is used for simulating I-V characteristics. The voltage gap is found to be a promising parameter for estimating E.coli concentration with ZnS/PVA QDs as active material and an electrical circuit is presented
{"title":"Zinc Sulphide Quantum Dots’ Applications in Antibacterial as well as Estimation of E.Coli Concentration by Fabricating Mem-Mode Devices","authors":"Himadri Duwarah, J. Devi, N. Sharma, K. Saikia, P. Datta","doi":"10.4028/p-5m1d1m","DOIUrl":"https://doi.org/10.4028/p-5m1d1m","url":null,"abstract":"This paper reports the synthesis of ZnS Quantum Dots (QDs) embedded in PVA by aqueous precipitation method and its application in antibacterial as well as to find or estimation of Escherichia coli (E.coli) concentration by using ZnS/PVA QD based mem-mode nanodevices. The as-synthesized ZnS/PVA samples are characterized by UV-Vis spectroscopy (UV), Photo luminescence (PL), X-ray diffraction (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). Antibacterial property of ZnS/PVA QDs against gram positive (S.aureus) as well as gram negative (E.coli) are tested. The antibacterial property is found to be more in S.aureus in comparision to E.coli. Mem-behaviour of the as-fabricated devices is observed through electrical characterization. COMSOL MP Software is used for simulating I-V characteristics. The voltage gap is found to be a promising parameter for estimating E.coli concentration with ZnS/PVA QDs as active material and an electrical circuit is presented","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"60 1","pages":"11 - 18"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84478023","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}
This research work is based on the machinability of an Inconel 800 alloy using TiAlN-coating and TiAlN-TiN-coating tools. In the CNC VMC Face milling process feed, depth of cut (DoC), and cutting speed consider input variables and surface roughness, Tool wear is measured for all machining conditions. To enhance the machining conditions a Taguchi L9 Design of Experiment was created. ANOVA analysis was used to identify the important variables influencing Flank wear (tool wear) and surface roughness. The signal-to-noise ratio for the ideal cutting combination was identified by evaluating the optimum surface roughness and tool wear. for the effect of coating, a comparison was done between the findings obtained using both TiAlN-coated and TiAlN-TiN tungsten carbide-coated tools. The best optimum surface roughness and tool wear of the experiment conducted under machining with TiAlN-TiN coated carbide tool resulted in .3433 µm and 128 µm respectively.
{"title":"Optimization of Machining Variables of Inconel 800 Alloy in CNC Face Milling Using TiAlN and TiAlN-TiN Coated Inserts","authors":"Vinod Kumar, N. Bala","doi":"10.4028/p-70w6sn","DOIUrl":"https://doi.org/10.4028/p-70w6sn","url":null,"abstract":"This research work is based on the machinability of an Inconel 800 alloy using TiAlN-coating and TiAlN-TiN-coating tools. In the CNC VMC Face milling process feed, depth of cut (DoC), and cutting speed consider input variables and surface roughness, Tool wear is measured for all machining conditions. To enhance the machining conditions a Taguchi L9 Design of Experiment was created. ANOVA analysis was used to identify the important variables influencing Flank wear (tool wear) and surface roughness. The signal-to-noise ratio for the ideal cutting combination was identified by evaluating the optimum surface roughness and tool wear. for the effect of coating, a comparison was done between the findings obtained using both TiAlN-coated and TiAlN-TiN tungsten carbide-coated tools. The best optimum surface roughness and tool wear of the experiment conducted under machining with TiAlN-TiN coated carbide tool resulted in .3433 µm and 128 µm respectively.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"101 1","pages":"139 - 150"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78106187","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}
Spinel ferrite nanoparticles are potential candidates for multiple biomedical applications. Spinel ferrite nanoparticles have been studied extensively for understanding physical, chemical, electro-optical as well as magnetic properties which are fascinating due to cationic distributions corresponding to tetrahedral sites and octahedral sites in a cubic phase. Biocompatibility and large magnetic moment are basic requirements in spinel ferrite nanoparticles for efficient functioning in specific application purpose. Fe3O4 (magnetite) is an important member of spinel ferrite group with high chemical stability and ferrimagetic material property at nanodimension. Superparamagnetic state and biocompatibility of magnetite (Fe3O4) spinel ferrite nanoparticle has already been proven. Spinel ferrite magnetite nanoparticles have been developed based on precipitation of iron oxide using ferric and ferrous ions at the ratio 2:1 in alkaline media at and above 100°C. The experimental parameters have been set to synthesize pure and uniformly sized magnetite nanoparticles. No other phases of iron oxides were detected other than magnetite spinel phase in the XRD result. The average crystal size has been determined from XRD peak broadening. Absorption spectra were investigated using UV-Vis Spectrometer and FTIR. Thermal and magnetic measurements were carried out Digital Scanning Calorimeter and SQUID Magnetometer. One sample of the prepared nanoparticles with polymer coating of polyvinyl alcohol has been studied for superparamagnetic nature. Superparamagnetic particles show saturation value of magnetization 51.26 emu/g at 100 K. ZFC-FC curves for two samples with polymer coating of polyvinyl alcohol and hydroxy-propyl methyl cellulose have also been studied. Keywords: Spinel Ferrite, Magnetite, Ferrimagnetism, Transition metal oxide, Superparamagnetism. Statements and declarations Competing Interests: The authors declare that there is no competing financial interest that are related directly or indirectly to the reported work in this paper. Conflict of interest: There is no conflict of interest. Acknowledgements The Authors are grateful to IISER Bhopal, CRF facility for providing instrumentation facility to characterize magnetic properties. We acknowledge thanks to Lovely Professional University for providing us necessary characterization technique for the XRD analysis and thermal analysis.
尖晶石铁氧体纳米粒子是多种生物医学应用的潜在候选者。尖晶石铁氧体纳米粒子的物理、化学、电光和磁性被广泛研究，这些特性是由于立方相中四面体和八面体位置对应的阳离子分布而引起的。生物相容性和大磁矩是尖晶石铁氧体纳米粒子在特定应用中有效发挥作用的基本要求。Fe3O4(磁铁矿)是尖晶石铁氧体族的重要成员，在纳米尺度上具有较高的化学稳定性和铁磁性。磁铁矿(Fe3O4)尖晶石铁氧体纳米颗粒的超顺磁性和生物相容性已经得到证实。尖晶石铁氧体磁铁矿纳米颗粒是基于铁离子和亚铁离子在碱性介质中以2:1的比例沉淀氧化铁而开发的。设定了实验参数，合成了纯度高、粒径均匀的磁铁矿纳米颗粒。XRD结果中除磁铁矿尖晶石相外，未检出其他氧化铁相。通过XRD峰展宽测定了平均晶粒尺寸。用紫外-可见光谱和红外光谱研究了吸收光谱。采用数字扫描量热仪和SQUID磁力计进行热、磁测量。对聚乙烯醇聚合物包覆的纳米粒子样品进行了超顺磁性研究。超顺磁粒子在100 K时磁化强度达到51.26 emu/g。研究了以聚乙烯醇和羟丙基甲基纤维素为涂层的两种样品的ZFC-FC曲线。关键词:尖晶石铁氧体，磁铁矿，铁磁性，过渡金属氧化物，超顺磁性。利益竞争:作者声明，不存在与本文报道工作直接或间接相关的经济利益竞争。利益冲突:不存在利益冲突。作者感谢CRF机构IISER Bhopal提供表征磁性能的仪器设备。我们感谢Lovely Professional University为我们提供了XRD分析和热分析所需的表征技术。
{"title":"Structural, Thermal, and Magnetic Characterization Analysis of Synthesized Fe3O4-Spinel Ferrite Nanoparticles","authors":"B. Gogoi, Upamanyu Das","doi":"10.4028/p-5bb090","DOIUrl":"https://doi.org/10.4028/p-5bb090","url":null,"abstract":"Spinel ferrite nanoparticles are potential candidates for multiple biomedical applications. Spinel ferrite nanoparticles have been studied extensively for understanding physical, chemical, electro-optical as well as magnetic properties which are fascinating due to cationic distributions corresponding to tetrahedral sites and octahedral sites in a cubic phase. Biocompatibility and large magnetic moment are basic requirements in spinel ferrite nanoparticles for efficient functioning in specific application purpose. Fe3O4 (magnetite) is an important member of spinel ferrite group with high chemical stability and ferrimagetic material property at nanodimension. Superparamagnetic state and biocompatibility of magnetite (Fe3O4) spinel ferrite nanoparticle has already been proven. Spinel ferrite magnetite nanoparticles have been developed based on precipitation of iron oxide using ferric and ferrous ions at the ratio 2:1 in alkaline media at and above 100°C. The experimental parameters have been set to synthesize pure and uniformly sized magnetite nanoparticles. No other phases of iron oxides were detected other than magnetite spinel phase in the XRD result. The average crystal size has been determined from XRD peak broadening. Absorption spectra were investigated using UV-Vis Spectrometer and FTIR. Thermal and magnetic measurements were carried out Digital Scanning Calorimeter and SQUID Magnetometer. One sample of the prepared nanoparticles with polymer coating of polyvinyl alcohol has been studied for superparamagnetic nature. Superparamagnetic particles show saturation value of magnetization 51.26 emu/g at 100 K. ZFC-FC curves for two samples with polymer coating of polyvinyl alcohol and hydroxy-propyl methyl cellulose have also been studied. Keywords: Spinel Ferrite, Magnetite, Ferrimagnetism, Transition metal oxide, Superparamagnetism. Statements and declarations Competing Interests: The authors declare that there is no competing financial interest that are related directly or indirectly to the reported work in this paper. Conflict of interest: There is no conflict of interest. Acknowledgements The Authors are grateful to IISER Bhopal, CRF facility for providing instrumentation facility to characterize magnetic properties. We acknowledge thanks to Lovely Professional University for providing us necessary characterization technique for the XRD analysis and thermal analysis.","PeriodicalId":7271,"journal":{"name":"Advanced Materials Research","volume":"467 1","pages":"79 - 98"},"PeriodicalIF":0.0,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79892953","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}
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