Pub Date : 2023-06-02DOI: 10.1080/00202967.2023.2208899
G. M. Reddy, C. Prasad, P. Patil, G. Shetty, N. Kakur, M. Ramesh
ABSTRACT The current investigation's objective was to assess the air jet erosion tester's ability to measure the erosive behaviour of plasma sprayed coatings on titanium-15 alloy. 65% NiCrAlY, 30% Cr2O3, and 5% YSZ make up the coating's chemical composition. A study of microstructure and phases was carried out. Microhardness and adhesive strength have both been measured in this work. With impact angles of 30° and 90° at 300°C, 500°C, and 700°C, Al2O3 erodent was utilised in a solid particle erosion test. An optical profilometer was used to calculate the erosion volume loss. The coating erosion resistance was found to be higher than the substrate sample for the test temperature that was employed, and this was more obvious at higher impact angles and higher temperatures The ductile character of the coating is seen in the contour of the deteriorated coating surface.
{"title":"High temperature erosion performance of NiCrAlY/Cr2O3/YSZ plasma spray coatings","authors":"G. M. Reddy, C. Prasad, P. Patil, G. Shetty, N. Kakur, M. Ramesh","doi":"10.1080/00202967.2023.2208899","DOIUrl":"https://doi.org/10.1080/00202967.2023.2208899","url":null,"abstract":"ABSTRACT The current investigation's objective was to assess the air jet erosion tester's ability to measure the erosive behaviour of plasma sprayed coatings on titanium-15 alloy. 65% NiCrAlY, 30% Cr2O3, and 5% YSZ make up the coating's chemical composition. A study of microstructure and phases was carried out. Microhardness and adhesive strength have both been measured in this work. With impact angles of 30° and 90° at 300°C, 500°C, and 700°C, Al2O3 erodent was utilised in a solid particle erosion test. An optical profilometer was used to calculate the erosion volume loss. The coating erosion resistance was found to be higher than the substrate sample for the test temperature that was employed, and this was more obvious at higher impact angles and higher temperatures The ductile character of the coating is seen in the contour of the deteriorated coating surface.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87470014","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}
Pub Date : 2023-06-01DOI: 10.1080/00202967.2023.2208437
C. Sherwin, S. Chakraborty, K. Raju, S. Bhat, Sudheendra P. Hebbar
ABSTRACT In the present study, nanocrystalline nickel (Ni) and nickel-chromium (Ni-Cr) alloy coatings were developed on copper (Cu) substrate using pulse current. The pulse current parameters include a cycle time of 240 milliseconds at a duty cycle of 0.5 and 4.17 Hz frequency. The surface morphology, texture, hardness, scratch resistance and porosity were investigated for different coatings developed by pulse plating. Energy Dispersive Spectroscopy (EDS) analysis revealed good quality Ni and Ni-Cr alloy coatings developed on the copper substrate. The peak current of the pulse has been observed to have an impact on the coating weight and thickness. The micrographs of the coatings explored under Field Emission Scanning Electron Microscopy (FESEM), depict uniform coatings consisting of fine primary and coarse secondary granules of Ni and Cr. The hard primary and secondary Ni granules deposited on the surface of Cu increase its hardness, corrosion and wear resistance. Further, it was observed that the Ni-Cr alloy plated samples are harder and less porous in nature compared to Ni plated samples.
{"title":"Investigation on the effect of nickel and nickel-chromium alloy pulse current plating on copper substrate","authors":"C. Sherwin, S. Chakraborty, K. Raju, S. Bhat, Sudheendra P. Hebbar","doi":"10.1080/00202967.2023.2208437","DOIUrl":"https://doi.org/10.1080/00202967.2023.2208437","url":null,"abstract":"ABSTRACT In the present study, nanocrystalline nickel (Ni) and nickel-chromium (Ni-Cr) alloy coatings were developed on copper (Cu) substrate using pulse current. The pulse current parameters include a cycle time of 240 milliseconds at a duty cycle of 0.5 and 4.17 Hz frequency. The surface morphology, texture, hardness, scratch resistance and porosity were investigated for different coatings developed by pulse plating. Energy Dispersive Spectroscopy (EDS) analysis revealed good quality Ni and Ni-Cr alloy coatings developed on the copper substrate. The peak current of the pulse has been observed to have an impact on the coating weight and thickness. The micrographs of the coatings explored under Field Emission Scanning Electron Microscopy (FESEM), depict uniform coatings consisting of fine primary and coarse secondary granules of Ni and Cr. The hard primary and secondary Ni granules deposited on the surface of Cu increase its hardness, corrosion and wear resistance. Further, it was observed that the Ni-Cr alloy plated samples are harder and less porous in nature compared to Ni plated samples.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81974886","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}
Pub Date : 2023-05-31DOI: 10.1080/00202967.2023.2207900
H. Hilton-Tapp, J. Kelly, D. Weston
ABSTRACT The development of the process to produce Metal Matrix Nanocomposite (MMNC) coatings can provide opportunity for the enhancement of mechanical and electrical properties. This research uses speciation-simulating software to screen formulations for producing nanocomposites by pulse-reverse plating (PRP). PRP is used as a controlled delivery mechanism to attract a high concentration of nanoparticles to the coating during the anodic pulse which are subsequently captured in the cathodic pulse. A disadvantage is that the anodic pulse generates passivating hydroxide layers leading to poor adhesion. Speciation plots assess the stabilising effect of chosen complexants (gluconate and glycine) within electrolytes with the aim of diminishing hydroxide formation. To confirm bath formulation effectiveness before nanoparticle incorporation, UV-Vis spectroscopy and electrodeposition were used. Gluconate and glycine both theoretically produce highly stable complexes and also produce uniform copper deposits supporting the stabilisation effect observed in theoretical studies. This work therefore supports the use of these complexants for future stages of this research.
{"title":"Designing effective plating baths for use in the pulse-reverse plating of copper nanocomposite coatings","authors":"H. Hilton-Tapp, J. Kelly, D. Weston","doi":"10.1080/00202967.2023.2207900","DOIUrl":"https://doi.org/10.1080/00202967.2023.2207900","url":null,"abstract":"ABSTRACT The development of the process to produce Metal Matrix Nanocomposite (MMNC) coatings can provide opportunity for the enhancement of mechanical and electrical properties. This research uses speciation-simulating software to screen formulations for producing nanocomposites by pulse-reverse plating (PRP). PRP is used as a controlled delivery mechanism to attract a high concentration of nanoparticles to the coating during the anodic pulse which are subsequently captured in the cathodic pulse. A disadvantage is that the anodic pulse generates passivating hydroxide layers leading to poor adhesion. Speciation plots assess the stabilising effect of chosen complexants (gluconate and glycine) within electrolytes with the aim of diminishing hydroxide formation. To confirm bath formulation effectiveness before nanoparticle incorporation, UV-Vis spectroscopy and electrodeposition were used. Gluconate and glycine both theoretically produce highly stable complexes and also produce uniform copper deposits supporting the stabilisation effect observed in theoretical studies. This work therefore supports the use of these complexants for future stages of this research.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80428776","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}
Pub Date : 2023-05-11DOI: 10.1080/00202967.2023.2207334
F. Lissandrello, L. Magagnin
ABSTRACT Calcium phosphate coatings have been widely used in orthopaedic and dental implants due to their excellent bioactivity and ability to promote formation of new bone tissue. Among the techniques used to manufacture these materials, electrochemical deposition has emerged as a promising method due to several benefits, such as improved compositional control, coating uniformity, versatility, and low cost. Moreover, the use of a pulsed current has proved to be an effective strategy to overcome electrochemical deposition’s major shortcomings. Herein, we provide an overview of the electrochemical deposition method, highlighting the benefits of the use of a pulsed current, as well as discussing the recent advances in the field. Overall, pulsed electrochemical deposition represents a promising approach for the production of high quality calcium phosphate coatings tailored for orthopaedic and dental implants.
{"title":"Pulsed electrochemical deposition of calcium phosphate coatings for biomedical applications","authors":"F. Lissandrello, L. Magagnin","doi":"10.1080/00202967.2023.2207334","DOIUrl":"https://doi.org/10.1080/00202967.2023.2207334","url":null,"abstract":"ABSTRACT Calcium phosphate coatings have been widely used in orthopaedic and dental implants due to their excellent bioactivity and ability to promote formation of new bone tissue. Among the techniques used to manufacture these materials, electrochemical deposition has emerged as a promising method due to several benefits, such as improved compositional control, coating uniformity, versatility, and low cost. Moreover, the use of a pulsed current has proved to be an effective strategy to overcome electrochemical deposition’s major shortcomings. Herein, we provide an overview of the electrochemical deposition method, highlighting the benefits of the use of a pulsed current, as well as discussing the recent advances in the field. Overall, pulsed electrochemical deposition represents a promising approach for the production of high quality calcium phosphate coatings tailored for orthopaedic and dental implants.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83118890","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}
Pub Date : 2023-04-20DOI: 10.1080/00202967.2023.2196850
Morten Linding Frederiksen, Marcus Viktor Kragh-Schwarz, A. Bentien, L. P. Nielsen
Years of research, decades of experience, and an array of new ideas have led the Norwegian company, HydrogenPro, to invest in the establishment of the Danish plating company Advanced Surface Plating (ASP). ASP is focusing on the development and production of high-performing nickel foam electrodes for alkaline electrolysis based on electroplating. The plating line was designed in Q1–Q2, 2021, installed in ASP’s premises in Aarhus during the summer of 2021, commissioned in August the same year, and pilot production was initiated in Q4. Currently, the industrial-scale plating line has an annual capacity of approximately 16.000 m electrodes based on individual plating of 1 × 1 m electrodes. HydrogenPro’s modularised 5.5 MW alkaline electrolyser units are based on an inside diameter of 188 cm circular electrodes with each unit containing 424 bipolar plated and 426 anodes and 426 cathodes. The total weight of each unit is more than 80 tons (transport weight empty of liquid). Figure 1, below, shows HydrogenPro’s standardised 5.5 MW unit under commissioning at HydrogenPro’s test facilities in Porsgrunn, Norway. Figure 2 shows the ASP plating line equipped with in-house waste-water treatment, allowing ASP to recycle rinsing water, thus minimising the overall water consumption. The premises at ASP allow for a potential increase of the production capacity by a factor of four, corresponding to a total annual production capacity of 64.000 m electrodes equivalent to an alkaline electrolysis capacity of nearly 500 MW pa. Besides the fully automatic plating line, ASP has established a research platform with all necessary infrastructure for supporting further development of new and superior electrodes for hydrogen and oxygen formation. This includes a chemistry laboratory with R&D-plating facilities (targeting an electrode area of 10 × Figure 1. HydrogenPro’s modularised 5.5 MW unit commissioned in Q4 2022 – Q1 2023 at HydrogenPro’s test facilities in Porsgrunn, Norway (Image courtesy HydrogenPro).
{"title":"Improved performance of electrodes for alkaline electrolysis","authors":"Morten Linding Frederiksen, Marcus Viktor Kragh-Schwarz, A. Bentien, L. P. Nielsen","doi":"10.1080/00202967.2023.2196850","DOIUrl":"https://doi.org/10.1080/00202967.2023.2196850","url":null,"abstract":"Years of research, decades of experience, and an array of new ideas have led the Norwegian company, HydrogenPro, to invest in the establishment of the Danish plating company Advanced Surface Plating (ASP). ASP is focusing on the development and production of high-performing nickel foam electrodes for alkaline electrolysis based on electroplating. The plating line was designed in Q1–Q2, 2021, installed in ASP’s premises in Aarhus during the summer of 2021, commissioned in August the same year, and pilot production was initiated in Q4. Currently, the industrial-scale plating line has an annual capacity of approximately 16.000 m electrodes based on individual plating of 1 × 1 m electrodes. HydrogenPro’s modularised 5.5 MW alkaline electrolyser units are based on an inside diameter of 188 cm circular electrodes with each unit containing 424 bipolar plated and 426 anodes and 426 cathodes. The total weight of each unit is more than 80 tons (transport weight empty of liquid). Figure 1, below, shows HydrogenPro’s standardised 5.5 MW unit under commissioning at HydrogenPro’s test facilities in Porsgrunn, Norway. Figure 2 shows the ASP plating line equipped with in-house waste-water treatment, allowing ASP to recycle rinsing water, thus minimising the overall water consumption. The premises at ASP allow for a potential increase of the production capacity by a factor of four, corresponding to a total annual production capacity of 64.000 m electrodes equivalent to an alkaline electrolysis capacity of nearly 500 MW pa. Besides the fully automatic plating line, ASP has established a research platform with all necessary infrastructure for supporting further development of new and superior electrodes for hydrogen and oxygen formation. This includes a chemistry laboratory with R&D-plating facilities (targeting an electrode area of 10 × Figure 1. HydrogenPro’s modularised 5.5 MW unit commissioned in Q4 2022 – Q1 2023 at HydrogenPro’s test facilities in Porsgrunn, Norway (Image courtesy HydrogenPro).","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75562148","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}
Pub Date : 2023-04-17DOI: 10.1080/00202967.2023.2185972
R. Anthoni Sagaya Selvan, D. Thakur, M. Seeman, V. Balasubramanian, R. Muraliraja
ABSTRACT This paper aims to address the impact of jet impingement on nano titanium-based ENi-P composite coatings deposited through electroless deposition on AH36 steel through Taguchi design of experiments. L9 Taguchi DOE was utilised to synthesise nine coatings by varying the four process parameter combinations suggested by the technique. Jet impingement combined with AFS 50/70 quartz sand erosion experimental run was conducted on the acidic, alkaline and nine ENi-P-TiO2 composite coatings administered through a waterjet erosion tester. The influence of C14-SB type Zwitterionic surfactant and nano TiO2 were discussed along with temperature and bath pH to achieve better resistance against the jet impingement on the surface of the coatings. Analysis of variance, the S/N ratio, and interaction plots were used to determine the optimal bath input parameters to deliver the least weight loss from the erosive environment and identify its use in the marine environment. The proposed optimal coating was validated using a confirmation test, and the weight loss was reduced by more than 35% compared to the initial condition parameter (A2B2C2D2). In addition to mechanical properties, the quality of the deposits was analysed through morphological and chemical composition probed through scanning electron microscope, energy dispersive X-Ray analysis and powder X-Ray diffraction methods. As a result, the Composite Modified Resilience (CMR) value of ENi-P-TiO2 optimal coating was improved by over 41.17%, and its corresponding weight loss was reduced to 35% compared to the initial condition. This experiment paves the way for further study on electroless deposits and their characteristics on AH36 steel generally used for shipbuilding in commercial ships, naval, and marine associated defence applications.
{"title":"Optimisation and analysis of jet impingement erosion behaviour of composite titanium based electroless nickel ENi-P coated naval steel (AH36)","authors":"R. Anthoni Sagaya Selvan, D. Thakur, M. Seeman, V. Balasubramanian, R. Muraliraja","doi":"10.1080/00202967.2023.2185972","DOIUrl":"https://doi.org/10.1080/00202967.2023.2185972","url":null,"abstract":"ABSTRACT This paper aims to address the impact of jet impingement on nano titanium-based ENi-P composite coatings deposited through electroless deposition on AH36 steel through Taguchi design of experiments. L9 Taguchi DOE was utilised to synthesise nine coatings by varying the four process parameter combinations suggested by the technique. Jet impingement combined with AFS 50/70 quartz sand erosion experimental run was conducted on the acidic, alkaline and nine ENi-P-TiO2 composite coatings administered through a waterjet erosion tester. The influence of C14-SB type Zwitterionic surfactant and nano TiO2 were discussed along with temperature and bath pH to achieve better resistance against the jet impingement on the surface of the coatings. Analysis of variance, the S/N ratio, and interaction plots were used to determine the optimal bath input parameters to deliver the least weight loss from the erosive environment and identify its use in the marine environment. The proposed optimal coating was validated using a confirmation test, and the weight loss was reduced by more than 35% compared to the initial condition parameter (A2B2C2D2). In addition to mechanical properties, the quality of the deposits was analysed through morphological and chemical composition probed through scanning electron microscope, energy dispersive X-Ray analysis and powder X-Ray diffraction methods. As a result, the Composite Modified Resilience (CMR) value of ENi-P-TiO2 optimal coating was improved by over 41.17%, and its corresponding weight loss was reduced to 35% compared to the initial condition. This experiment paves the way for further study on electroless deposits and their characteristics on AH36 steel generally used for shipbuilding in commercial ships, naval, and marine associated defence applications.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84734591","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}
Pub Date : 2023-04-17DOI: 10.1080/00202967.2023.2196831
{"title":"Anne Chapman FIMF (1931–2023)","authors":"","doi":"10.1080/00202967.2023.2196831","DOIUrl":"https://doi.org/10.1080/00202967.2023.2196831","url":null,"abstract":"","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90685596","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}
Pub Date : 2023-04-14DOI: 10.1080/00202967.2023.2196841
P. Leisner
The Schwäbisch Gmünd Prize for Young Scientists has been awarded for the seventh time. This year, the prize is given to Dr Donghoon Kim (Figure 1) who is at the Multi-Scale Robotics Lab (MSRL), Institute of Robotics and Intelligent Systems (IRIS), ETH (Swiss Federal Institute of Technology) Zürich, Switzerland. The prize is awarded based on the scientific work presented in the paper entitled ‘Magnetoelectric Effect in Hydrogen Harvesting: Magnetic Field as a Trigger of Catalytic Reactions’. The prize is given with the purpose of encouraging promising young scientists within surface technology to continue their career in the spirit of EAST, which means to contribute to integration, understanding and friendship between European people and individuals, which in the present situation is more important than ever. An invited talk will be given in connection with the Prize ceremony at the forthcoming European Academy of Surface Technology (EAST) Forum 2023, which is integrated with the 15th International Workshop on Electrodeposited Nanostructures (EDNANO), 15–18 November 2023 in Metz, France (www.szfki.hu/ednano/).
{"title":"The Schwäbisch Gmünd Prize for Young Scientists 2023","authors":"P. Leisner","doi":"10.1080/00202967.2023.2196841","DOIUrl":"https://doi.org/10.1080/00202967.2023.2196841","url":null,"abstract":"The Schwäbisch Gmünd Prize for Young Scientists has been awarded for the seventh time. This year, the prize is given to Dr Donghoon Kim (Figure 1) who is at the Multi-Scale Robotics Lab (MSRL), Institute of Robotics and Intelligent Systems (IRIS), ETH (Swiss Federal Institute of Technology) Zürich, Switzerland. The prize is awarded based on the scientific work presented in the paper entitled ‘Magnetoelectric Effect in Hydrogen Harvesting: Magnetic Field as a Trigger of Catalytic Reactions’. The prize is given with the purpose of encouraging promising young scientists within surface technology to continue their career in the spirit of EAST, which means to contribute to integration, understanding and friendship between European people and individuals, which in the present situation is more important than ever. An invited talk will be given in connection with the Prize ceremony at the forthcoming European Academy of Surface Technology (EAST) Forum 2023, which is integrated with the 15th International Workshop on Electrodeposited Nanostructures (EDNANO), 15–18 November 2023 in Metz, France (www.szfki.hu/ednano/).","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75711581","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}
Pub Date : 2023-04-13DOI: 10.1080/00202967.2023.2196832
{"title":"Prof. Samuel James Harris (8 January 1936–18 January 2023)","authors":"","doi":"10.1080/00202967.2023.2196832","DOIUrl":"https://doi.org/10.1080/00202967.2023.2196832","url":null,"abstract":"","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85742601","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}
Pub Date : 2023-04-04DOI: 10.1080/00202967.2023.2186004
B. Miao, Xinghong Zhang, Xin-xin Ma
ABSTRACT Nitrogen ion implantation with different dose rates was conducted on 8Cr4Mo4V-bearing steel in the present study. The effects of high-dose-rate nitrogen plasma immersion ion implantation (N-PIII) on the microstructure and nanohardness of the 8Cr4Mo4V-bearing steel were studied. The surface morphology, phase microstructure, lattice parameters and nanohardness were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nanoindentation tests. The results showed that finer crystallite size, higher micro-strain and dislocation density can be achieved under high-dose-rate ion implantation and the dislocation density reaches the highest level of 1.71 × 1016 m−2 at a dose rate of 5.23 × 1017 ions cm−2 h−1. In addition, the high-dose-rate ion implantation results in changes in phase composition in the surface layer, and the Fe(M) peaks slightly shift to a lower angle. Moreover, the nanohardness of implanted samples improved notably, especially at a dose rate of 8.64 × 1017 ions cm−2 h−1, reaching the high value of 15.8 GPa, which is 42.1% higher than that of a non-implanted sample (11.1 GPa), implying that the properties of the samples were strongly affected by the implantation dose rate of nitrogen.
{"title":"Effects of microstructure and nanohardness of 8Cr4Mo4V steel under high-dose-rate N-PIII","authors":"B. Miao, Xinghong Zhang, Xin-xin Ma","doi":"10.1080/00202967.2023.2186004","DOIUrl":"https://doi.org/10.1080/00202967.2023.2186004","url":null,"abstract":"ABSTRACT Nitrogen ion implantation with different dose rates was conducted on 8Cr4Mo4V-bearing steel in the present study. The effects of high-dose-rate nitrogen plasma immersion ion implantation (N-PIII) on the microstructure and nanohardness of the 8Cr4Mo4V-bearing steel were studied. The surface morphology, phase microstructure, lattice parameters and nanohardness were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and nanoindentation tests. The results showed that finer crystallite size, higher micro-strain and dislocation density can be achieved under high-dose-rate ion implantation and the dislocation density reaches the highest level of 1.71 × 1016 m−2 at a dose rate of 5.23 × 1017 ions cm−2 h−1. In addition, the high-dose-rate ion implantation results in changes in phase composition in the surface layer, and the Fe(M) peaks slightly shift to a lower angle. Moreover, the nanohardness of implanted samples improved notably, especially at a dose rate of 8.64 × 1017 ions cm−2 h−1, reaching the high value of 15.8 GPa, which is 42.1% higher than that of a non-implanted sample (11.1 GPa), implying that the properties of the samples were strongly affected by the implantation dose rate of nitrogen.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91195476","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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