ABSTRACTThe main scope of this work is the metallization of high density Acryonitrile Butadiene Styrene (ABS) surfaces for aerospace applications. Originality and main focused area of the study is to grasp the mechanism of physical properties of the surface and the effect of wet chemical processes on the surface of the ABS substrate. After surface sensitization and metallization with nano-sized ions, the polyurethane surface is metallized and nickel (Ni) coated with electroless and elecrolytic Ni plating processes. The ultimate goal of these advances is the production of composite lay-up tools for the production of primary and secondary composite aircraft parts from nanoscale to macro level. Composite lay-up tool requirements of the aerospace industry include a minimum thickness of 5 mm, acceptability of airtightness testing and reduced surface roughness. Results show that increasing current density adversely affects the surface morphology and metallization processes enhance the surface conductivity of the foam.KEYWORDS: Aerospace engineeringelectroless platingfoam surfacemetallizationnickel coatingtool materials Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingAuthors BÜ and YÖ acknowledge financial support by the Scientific and Technological Research Council of Turkey within the programme 1515 for research and laboratory developments within the project 5189901. Moreover, authors are grateful to Turkish Aerospace and the Institute of Materials Science and Nanotechnology at Bilkent University for providing the needed infrastructure.
{"title":"Examination of the metallization behaviour of an ABS surface","authors":"Büsra Ünlü, Yahya Öz, Metehan Erdoğan, İshak Karakaya","doi":"10.1080/02670844.2023.2259700","DOIUrl":"https://doi.org/10.1080/02670844.2023.2259700","url":null,"abstract":"ABSTRACTThe main scope of this work is the metallization of high density Acryonitrile Butadiene Styrene (ABS) surfaces for aerospace applications. Originality and main focused area of the study is to grasp the mechanism of physical properties of the surface and the effect of wet chemical processes on the surface of the ABS substrate. After surface sensitization and metallization with nano-sized ions, the polyurethane surface is metallized and nickel (Ni) coated with electroless and elecrolytic Ni plating processes. The ultimate goal of these advances is the production of composite lay-up tools for the production of primary and secondary composite aircraft parts from nanoscale to macro level. Composite lay-up tool requirements of the aerospace industry include a minimum thickness of 5 mm, acceptability of airtightness testing and reduced surface roughness. Results show that increasing current density adversely affects the surface morphology and metallization processes enhance the surface conductivity of the foam.KEYWORDS: Aerospace engineeringelectroless platingfoam surfacemetallizationnickel coatingtool materials Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingAuthors BÜ and YÖ acknowledge financial support by the Scientific and Technological Research Council of Turkey within the programme 1515 for research and laboratory developments within the project 5189901. Moreover, authors are grateful to Turkish Aerospace and the Institute of Materials Science and Nanotechnology at Bilkent University for providing the needed infrastructure.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135767319","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}
Pub Date : 2023-10-13DOI: 10.1080/02670844.2023.2265616
R. Health Royal Hermonson, R. Thanigaivelan, Vinod Kavya, K. Rathinasamy, T. Jagadeesha
ABSTRACTThis study investigates the biocompatibility of laser-textured 316L stainless steel (SS) coated with hydroxyapatite (HA) for orthopaedic implants. Powdered HA was electrochemically deposited on the laser-textured surface of 316L SS, and various tests were conducted on its surface to assess its biocompatibility. A particle size analyser was used to determine the average HA particle size, and a 3D optical profilometer was employed to characterise the surface roughness of the laser-textured samples. Contact angle measurement results provide insights into the wettability of the substrate. Microscopy tests revealed that, compared to those without HA coating, HA coatings on spherical dimpled textures exhibited better cell adherence. Among the tested samples, a sample with 98% laser energy input, 40.45° contact angle, and 75.976 µm HA coating thickness was found to be the most suitable for bone implantation.KEYWORDS: Laser surface texturinghydroxyapatite coating316L SScontact angledimple distancebiocompatibilityelectrochemical depositionvitro diagnostics
{"title":"Performance of electrochemically deposited hydroxyapatite on textured 316L SS for applications in biomedicine","authors":"R. Health Royal Hermonson, R. Thanigaivelan, Vinod Kavya, K. Rathinasamy, T. Jagadeesha","doi":"10.1080/02670844.2023.2265616","DOIUrl":"https://doi.org/10.1080/02670844.2023.2265616","url":null,"abstract":"ABSTRACTThis study investigates the biocompatibility of laser-textured 316L stainless steel (SS) coated with hydroxyapatite (HA) for orthopaedic implants. Powdered HA was electrochemically deposited on the laser-textured surface of 316L SS, and various tests were conducted on its surface to assess its biocompatibility. A particle size analyser was used to determine the average HA particle size, and a 3D optical profilometer was employed to characterise the surface roughness of the laser-textured samples. Contact angle measurement results provide insights into the wettability of the substrate. Microscopy tests revealed that, compared to those without HA coating, HA coatings on spherical dimpled textures exhibited better cell adherence. Among the tested samples, a sample with 98% laser energy input, 40.45° contact angle, and 75.976 µm HA coating thickness was found to be the most suitable for bone implantation.KEYWORDS: Laser surface texturinghydroxyapatite coating316L SScontact angledimple distancebiocompatibilityelectrochemical depositionvitro diagnostics","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135853280","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}
Pub Date : 2023-10-07DOI: 10.1080/02670844.2023.2265612
Archit Shrivastava, D. Ravi Kumar, G. Manikandan, Rahul K. Verma
ABSTRACTFriction at the blank-die contact influences material flow, formability, and product surface quality in processes like deep drawing. Surface modification of the dies by laser texturing is a potential technique to alter the tribological characteristics at the interface during sliding of the sheet over the die surface in lubricated condition. In this work, the effect of laser surface texturing of dies has been investigated under high normal loads during strip drawing of dual phase (DP600) steel. The effect of texture parameters and process parameters on the interface friction between the strip and the dies has been studied. It has been found that the friction coefficient reduced, and the surface finish improved significantly with the textured dies when compared to the conventional die. This study emphasises the importance of surface modification of the dies by laser texturing for its potential application in sheet metal forming processes.KEYWORDS: Laser surface texturingtextured diesstrip drawing testfriction coefficientsurface roughnessdimple sizetexture area densitylubrication AcknowledgementsArchit Shrivastava would like to acknowledge the assistantship received from the Ministry of Human Resource Development (MHRD), Government of India for this research work.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is a part of collaborative project between IIT Delhi and Tata Steel R&D, Jamshedpur [Project No: RP03952].
{"title":"Laser surface texturing of dies in strip drawing of DP600 steel sheet","authors":"Archit Shrivastava, D. Ravi Kumar, G. Manikandan, Rahul K. Verma","doi":"10.1080/02670844.2023.2265612","DOIUrl":"https://doi.org/10.1080/02670844.2023.2265612","url":null,"abstract":"ABSTRACTFriction at the blank-die contact influences material flow, formability, and product surface quality in processes like deep drawing. Surface modification of the dies by laser texturing is a potential technique to alter the tribological characteristics at the interface during sliding of the sheet over the die surface in lubricated condition. In this work, the effect of laser surface texturing of dies has been investigated under high normal loads during strip drawing of dual phase (DP600) steel. The effect of texture parameters and process parameters on the interface friction between the strip and the dies has been studied. It has been found that the friction coefficient reduced, and the surface finish improved significantly with the textured dies when compared to the conventional die. This study emphasises the importance of surface modification of the dies by laser texturing for its potential application in sheet metal forming processes.KEYWORDS: Laser surface texturingtextured diesstrip drawing testfriction coefficientsurface roughnessdimple sizetexture area densitylubrication AcknowledgementsArchit Shrivastava would like to acknowledge the assistantship received from the Ministry of Human Resource Development (MHRD), Government of India for this research work.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work is a part of collaborative project between IIT Delhi and Tata Steel R&D, Jamshedpur [Project No: RP03952].","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135253278","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}
Pub Date : 2023-10-07DOI: 10.1080/02670844.2023.2264528
Mohammed Mushtaq, Ramesh B. Adusumalli, Kurra Suresh, Anu Anna Abraham
ABSTRACTIn the present study, glass-epoxy composites were used as a substrate to study the performance of modified polyurethane coating. Two-layer coating (180–200 µm) wherein the epoxy primer as the first coat and polyurethane as the top coat was applied using an air-assisted spray gun to increase the service life of the composite. The analysis of coating was performed using gloss, contact angle, FTIR, TGA, tensile test and SEM. The bonding strength between coating and substrate was evaluated by cross-hatch cut, 180 deg peel strength and pull-off adhesion tests. Scratch, Taber abrasion and Pin-on-disc tests were also performed to evaluate the wear resistance. In addition, a rain erosion test was performed to check the stability of the coating. From the above tests, it is concluded that the applied coating well adhered to the composite substrate. The data generated from different tests can be used to estimate the service life of polymer composites and coatings.KEYWORDS: Polymer compositesepoxy coatingspolyurethane coatingsadhesion propertiescharacterizationwearScratch testTensile test180 degree strengthRain erosion AcknowledgementsThe authors gratefully acknowledge BITS Pilani Hyderabad Campus and thank CAL and Workshop Divisions, Chemical and Mechanical Engineering Departments. The authors thank Advanced Systems Laboratory (ASL), Defence Research and Development Organization for their financial support (Grant Number: ASL/31/20/4051/CARS/073). Also, the authors extend their appreciation to Mr. Karthik Reddy, Mr. C. Kaushik and Ms. Pallavi for giving their valuable insights and assistance during the experiments.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors (s) received financial support for the research from Advanced Systems Laboratory (ASL), Defence Research and Development Organization (Grant Number: ASL/31/20/4051/CARS/073)
{"title":"Adhesion and tribological characteristics of modified polyurethane coating on composite substrate","authors":"Mohammed Mushtaq, Ramesh B. Adusumalli, Kurra Suresh, Anu Anna Abraham","doi":"10.1080/02670844.2023.2264528","DOIUrl":"https://doi.org/10.1080/02670844.2023.2264528","url":null,"abstract":"ABSTRACTIn the present study, glass-epoxy composites were used as a substrate to study the performance of modified polyurethane coating. Two-layer coating (180–200 µm) wherein the epoxy primer as the first coat and polyurethane as the top coat was applied using an air-assisted spray gun to increase the service life of the composite. The analysis of coating was performed using gloss, contact angle, FTIR, TGA, tensile test and SEM. The bonding strength between coating and substrate was evaluated by cross-hatch cut, 180 deg peel strength and pull-off adhesion tests. Scratch, Taber abrasion and Pin-on-disc tests were also performed to evaluate the wear resistance. In addition, a rain erosion test was performed to check the stability of the coating. From the above tests, it is concluded that the applied coating well adhered to the composite substrate. The data generated from different tests can be used to estimate the service life of polymer composites and coatings.KEYWORDS: Polymer compositesepoxy coatingspolyurethane coatingsadhesion propertiescharacterizationwearScratch testTensile test180 degree strengthRain erosion AcknowledgementsThe authors gratefully acknowledge BITS Pilani Hyderabad Campus and thank CAL and Workshop Divisions, Chemical and Mechanical Engineering Departments. The authors thank Advanced Systems Laboratory (ASL), Defence Research and Development Organization for their financial support (Grant Number: ASL/31/20/4051/CARS/073). Also, the authors extend their appreciation to Mr. Karthik Reddy, Mr. C. Kaushik and Ms. Pallavi for giving their valuable insights and assistance during the experiments.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThe authors (s) received financial support for the research from Advanced Systems Laboratory (ASL), Defence Research and Development Organization (Grant Number: ASL/31/20/4051/CARS/073)","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135253283","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}
Pub Date : 2023-10-07DOI: 10.1080/02670844.2023.2264530
Cemre Avşar, Gurkan Karakas
ABSTRACTThe effect of electrodeposition temperature, vanadium doping, and oxidation state of vanadium on the photocatalytic activity of ZnO thin films over ITO substrates were investigated. NH4VO3 aqueous solution was used as precursor to dope ZnO thin film samples with V5+ by dip coating method and oxalic acid was used as reducing agent to synthesize V+4 doped samples. UV-Vis spectroscopy was used to determine the direct and indirect band gap values of thin film samples. Methylene blue (MB) degradation assays were used to evaluate the photocatalytic activity. XPS analysis was used to determine the analyse oxidation state of vanadium over the samples. Photocatalytic activity studies revealed that ZnO samples electrodeposited at 70°C have higher band gap and MB degradation activity under artificial solar irradiation. The presence of vanadium also enhances the photocatalytic activity of ZnO and samples doped with V+4 have higher photocatalytic activity than the samples doped with V+5 sites.KEYWORDS: ZnOfilmelectrodepositionvanadiumdopingoxidationphotocatalyticactivity Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Vanadium promoted ZnO films: effects on optical and photocatalytic properties","authors":"Cemre Avşar, Gurkan Karakas","doi":"10.1080/02670844.2023.2264530","DOIUrl":"https://doi.org/10.1080/02670844.2023.2264530","url":null,"abstract":"ABSTRACTThe effect of electrodeposition temperature, vanadium doping, and oxidation state of vanadium on the photocatalytic activity of ZnO thin films over ITO substrates were investigated. NH4VO3 aqueous solution was used as precursor to dope ZnO thin film samples with V5+ by dip coating method and oxalic acid was used as reducing agent to synthesize V+4 doped samples. UV-Vis spectroscopy was used to determine the direct and indirect band gap values of thin film samples. Methylene blue (MB) degradation assays were used to evaluate the photocatalytic activity. XPS analysis was used to determine the analyse oxidation state of vanadium over the samples. Photocatalytic activity studies revealed that ZnO samples electrodeposited at 70°C have higher band gap and MB degradation activity under artificial solar irradiation. The presence of vanadium also enhances the photocatalytic activity of ZnO and samples doped with V+4 have higher photocatalytic activity than the samples doped with V+5 sites.KEYWORDS: ZnOfilmelectrodepositionvanadiumdopingoxidationphotocatalyticactivity Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135253114","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}
ABSTRACTSolid lubricating coatings were applied onto Carbon Fibre Reinforced Polymer (CFRP) substrates, using epoxy resin as the adhesive agent, graphite (C) and molybdenum disulphide (MoS2) as lubricating components, and alumina (Al2O3) as the functional filler. The test parts were prepared by spraying technology and co-curing process. The mechanical properties of the coating were evaluated using Bar hardness and wear rate tests, while the microstructure of the coating was analysed using EDS elemental analysis technology. The test results revealed that the filler content had a significant impact on the mechanical properties. The performance of the coating was determined by the formation of a lubricating film, which resulted from the accumulation of lubricant and reinforcing material during external friction. Scheme T7 yielded the best coating performance with a ratio of epoxy resin to molybdenum disulphide to graphite to alumina of 20:8:3:2.KEYWORDS: Orthogonal experimentfrictional characteristicslubrication coatingco-curing technologyspraing technologymechanical propertieslubricating filmreinforcing material Data availability statementAll relevant data are within the paper.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China [grant number 51975435].
{"title":"Preparation and frictional characteristics of solid lubrication coating on CFRP surface","authors":"Xianglong Wen, Zhengyang Zhou, Pengfei Wang, Jinguang Zhang","doi":"10.1080/02670844.2023.2265609","DOIUrl":"https://doi.org/10.1080/02670844.2023.2265609","url":null,"abstract":"ABSTRACTSolid lubricating coatings were applied onto Carbon Fibre Reinforced Polymer (CFRP) substrates, using epoxy resin as the adhesive agent, graphite (C) and molybdenum disulphide (MoS2) as lubricating components, and alumina (Al2O3) as the functional filler. The test parts were prepared by spraying technology and co-curing process. The mechanical properties of the coating were evaluated using Bar hardness and wear rate tests, while the microstructure of the coating was analysed using EDS elemental analysis technology. The test results revealed that the filler content had a significant impact on the mechanical properties. The performance of the coating was determined by the formation of a lubricating film, which resulted from the accumulation of lubricant and reinforcing material during external friction. Scheme T7 yielded the best coating performance with a ratio of epoxy resin to molybdenum disulphide to graphite to alumina of 20:8:3:2.KEYWORDS: Orthogonal experimentfrictional characteristicslubrication coatingco-curing technologyspraing technologymechanical propertieslubricating filmreinforcing material Data availability statementAll relevant data are within the paper.Disclosure statementNo potential conflict of interest was reported by the author(s).Additional informationFundingThis work was supported by National Natural Science Foundation of China [grant number 51975435].","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"-1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135253275","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}
Pub Date : 2023-10-04DOI: 10.1080/02670844.2023.2259529
D.F. Zhang, R. Zheng, X.W. Chen, G.H. Zhang
ABSTRACTIn order to make titanium alloy implants have better corrosion resistance in the human body, selenium-containing coating was added to the surface of Ti6Al7Nb through micro-arc oxidation. The results indicate that the coating has a higher thickness and lower roughness after the addition of selenium element. XRD, SEM, and XPS analysis showed that selenium element was successfully added into the coating. Then the dynamic polarization curve and EIS indicate that the prepared samples have better corrosion resistance in SBF solution compared to the unadded samples, (icorr) and (Ecorr) are 2.695 × 10−8 A·cm−2 and 0.101 V, respectively. The addition of selenium helps to improve the biological corrosion resistance of the sample in body fluids.KEYWORDS: Micro-arc oxidationSeO2titanium alloycorrosion resistancecoatingsroughnessthicknessSBF solution Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis work was supported By Open Fund(PLN2021-20 ) of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University).
{"title":"Effect of SeO <sub>2</sub> on corrosion resistance of micro-arc oxidation","authors":"D.F. Zhang, R. Zheng, X.W. Chen, G.H. Zhang","doi":"10.1080/02670844.2023.2259529","DOIUrl":"https://doi.org/10.1080/02670844.2023.2259529","url":null,"abstract":"ABSTRACTIn order to make titanium alloy implants have better corrosion resistance in the human body, selenium-containing coating was added to the surface of Ti6Al7Nb through micro-arc oxidation. The results indicate that the coating has a higher thickness and lower roughness after the addition of selenium element. XRD, SEM, and XPS analysis showed that selenium element was successfully added into the coating. Then the dynamic polarization curve and EIS indicate that the prepared samples have better corrosion resistance in SBF solution compared to the unadded samples, (icorr) and (Ecorr) are 2.695 × 10−8 A·cm−2 and 0.101 V, respectively. The addition of selenium helps to improve the biological corrosion resistance of the sample in body fluids.KEYWORDS: Micro-arc oxidationSeO2titanium alloycorrosion resistancecoatingsroughnessthicknessSBF solution Disclosure statementThe authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.Additional informationFundingThis work was supported By Open Fund(PLN2021-20 ) of State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University).","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135644068","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}
Pub Date : 2023-09-28DOI: 10.1080/02670844.2023.2261675
Akhil Krishnan, Aravindan Guruswamy, P. Balaji Bhargav, P. Ramasamy
ABSTRACTIn the current work, we studied the influence of surface modification on reflectivity and minority carrier lifetime of mc-Si wafer taken from ingot grown by DS process. Two etchants combination namely, KOH/IPA/DI water, and NaOCl/KOH/IPA/DI water are used for different time durations. Reflectance and minority carrier lifetime vary significantly for both etchants used in this work. Optimised micro pyramidal structure formation will aid in enhancing the total internal reflection thereby increasing light absorption. Increase in minority carrier lifetime will be helpful in increasing the efficiency of solar cell. In order to establish the effect of etching on reflectivity of wafers, Al-doped ZnO was sputtered on etched surface and reflectivity was found to decrease further as observed from the reflectivity spectrum. I-V measurements were carried out on Ag/Ti/AZO/mc-Si/Ag and effect of etching on contact behaviour was observed. AZO-coated Si surface with optimised surface micro pyramids served as a good antireflection layer..KEYWORDS: Mc-Si waferschemical etchingpyramidal structureminority carrier lifetimeAZO ARCReduced reflectanceSchottky JunctionsOhmic junctions Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThe authors thank Department of Science and Technology, India (DST) for providing the financial support to carry out this work (Order No. DST/TMD / CERI /RES/ 2020/7(c) dated 31 December 2020).
{"title":"Enhancing multi-crystalline silicon wafer performance through surface modification and AZO treatment","authors":"Akhil Krishnan, Aravindan Guruswamy, P. Balaji Bhargav, P. Ramasamy","doi":"10.1080/02670844.2023.2261675","DOIUrl":"https://doi.org/10.1080/02670844.2023.2261675","url":null,"abstract":"ABSTRACTIn the current work, we studied the influence of surface modification on reflectivity and minority carrier lifetime of mc-Si wafer taken from ingot grown by DS process. Two etchants combination namely, KOH/IPA/DI water, and NaOCl/KOH/IPA/DI water are used for different time durations. Reflectance and minority carrier lifetime vary significantly for both etchants used in this work. Optimised micro pyramidal structure formation will aid in enhancing the total internal reflection thereby increasing light absorption. Increase in minority carrier lifetime will be helpful in increasing the efficiency of solar cell. In order to establish the effect of etching on reflectivity of wafers, Al-doped ZnO was sputtered on etched surface and reflectivity was found to decrease further as observed from the reflectivity spectrum. I-V measurements were carried out on Ag/Ti/AZO/mc-Si/Ag and effect of etching on contact behaviour was observed. AZO-coated Si surface with optimised surface micro pyramids served as a good antireflection layer..KEYWORDS: Mc-Si waferschemical etchingpyramidal structureminority carrier lifetimeAZO ARCReduced reflectanceSchottky JunctionsOhmic junctions Disclosure statementNo potential conflict of interest was reported by the authors.Additional informationFundingThe authors thank Department of Science and Technology, India (DST) for providing the financial support to carry out this work (Order No. DST/TMD / CERI /RES/ 2020/7(c) dated 31 December 2020).","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135385135","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}
Pub Date : 2023-09-25DOI: 10.1080/02670844.2023.2260049
Vikrant Singh, Anil Kumar Singla, Anuj Bansal
ABSTRACTThis research explores the enhanced slurry erosion behaviour of a composite coating comprising Titanium Carbide (TiC) deposited via High Velocity Oxy-Fuel (HVOF) spraying process. The study integrates laser texturing and Polytetrafluoroethylene (PTFE) spraying techniques to improve the coating's performance. TiC coating is applied to SS316 substrates using HVOF, followed by laser surface texturing to create micro-scale circular patterns. A thin layer of PTFE is then sprayed onto the textured surface, enhancing static contact angle and anti-adhesive properties. Slurry erosion tests reveal significant improvements in the coating's resistance. The findings offer promising applications in slurry erosion-prone industries. Further investigations aim to study the erosive mechanism of the different samples and evaluate their long-term performance.KEYWORDS: ErosionTiCHVOFSS316PTFETexturingHardnessToughness Disclosure statementNo potential conflict of interest was reported by the author(s).
{"title":"Enhanced erosion resistance of HVOF-deposited laser-textured TiC coating with PTFE","authors":"Vikrant Singh, Anil Kumar Singla, Anuj Bansal","doi":"10.1080/02670844.2023.2260049","DOIUrl":"https://doi.org/10.1080/02670844.2023.2260049","url":null,"abstract":"ABSTRACTThis research explores the enhanced slurry erosion behaviour of a composite coating comprising Titanium Carbide (TiC) deposited via High Velocity Oxy-Fuel (HVOF) spraying process. The study integrates laser texturing and Polytetrafluoroethylene (PTFE) spraying techniques to improve the coating's performance. TiC coating is applied to SS316 substrates using HVOF, followed by laser surface texturing to create micro-scale circular patterns. A thin layer of PTFE is then sprayed onto the textured surface, enhancing static contact angle and anti-adhesive properties. Slurry erosion tests reveal significant improvements in the coating's resistance. The findings offer promising applications in slurry erosion-prone industries. Further investigations aim to study the erosive mechanism of the different samples and evaluate their long-term performance.KEYWORDS: ErosionTiCHVOFSS316PTFETexturingHardnessToughness Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135814613","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}
ABSTRACT Low-Be copper alloys exhibit high thermal and electrical conductivities but weak strength, hardness, wear and corrosion resistances, which limit their practical applications severely. To overcome these defects, we herein systematically investigate the effects of ultrasonic surface modification on the microstructures and properties of Cu–0.2Be–1.0Co alloy. It is found that the gradient microstructures characterized by pile-ups and dents, fine grains, dense dislocations and compressive residual stresses are generated in the 171 μm thickness surface layer of the Cu–0.2Be–1.0Co alloy by ultrasonic surface modification. As a result, the surface hardness obtains a 162% enhancement, the wear rate drops from 5.03 × 10−4 to 3.46 × 10−4 mm3·N−1·m−1, and the electrochemical corrosion current density decreases from 3.24 to 1.92 μA/cm2. These results indicate that the comprehensive properties of Cu–0.2Be–1.0Co alloy can be simultaneously improved by utilizing ultrasonic surface modification.
{"title":"Microstructures and properties of ultrasonically surface-modified Cu–0.2Be–1.0Co alloy","authors":"Jinyun Wang, Bowen Zhang, Zhenyu Hong, Hongliang Zhao","doi":"10.1080/02670844.2023.2253392","DOIUrl":"https://doi.org/10.1080/02670844.2023.2253392","url":null,"abstract":"ABSTRACT Low-Be copper alloys exhibit high thermal and electrical conductivities but weak strength, hardness, wear and corrosion resistances, which limit their practical applications severely. To overcome these defects, we herein systematically investigate the effects of ultrasonic surface modification on the microstructures and properties of Cu–0.2Be–1.0Co alloy. It is found that the gradient microstructures characterized by pile-ups and dents, fine grains, dense dislocations and compressive residual stresses are generated in the 171 μm thickness surface layer of the Cu–0.2Be–1.0Co alloy by ultrasonic surface modification. As a result, the surface hardness obtains a 162% enhancement, the wear rate drops from 5.03 × 10−4 to 3.46 × 10−4 mm3·N−1·m−1, and the electrochemical corrosion current density decreases from 3.24 to 1.92 μA/cm2. These results indicate that the comprehensive properties of Cu–0.2Be–1.0Co alloy can be simultaneously improved by utilizing ultrasonic surface modification.","PeriodicalId":21995,"journal":{"name":"Surface Engineering","volume":"39 1","pages":"751 - 760"},"PeriodicalIF":2.8,"publicationDate":"2023-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42714259","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}
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