Transactions of the IMF最新文献

{"title":"Anodising of aluminium in formate solutions with formation of porous alumina arrays","authors":"V. Klimas, A. Naujokaitis, S. Jankauskas, A. Jagminas","doi":"10.1080/00202967.2022.2110305","DOIUrl":"https://doi.org/10.1080/00202967.2022.2110305","url":null,"abstract":"ABSTRACT New applications of porous anodic aluminium oxide (alumina) structures for the fabrication of photonic devices, etching masks, and periodic pore templates with prospective magnetic, photoluminescent, anti-reflecting properties recently are of high interest. In this respect, new anodising processes for controllable formation of periodic structures in unconventional solutions at low voltages might be challenging. In this study, the anodic behaviour of aluminium in aqueous formate solutions was studied within a wide range of concentrations, pH, electrolyte temperatures, anodising times, and voltages. It was established that the thickness of porous anodic films depended on the concentration of solution applied (c), pH, bath temperature (T), and voltage (U a) increasing with increase in c, U a, and T. The thickest films were formed in the solution containing 0.2 mol L−1 formic acid at a pH of 2.5. These films contained up to 5.8 at% of entrapped carbon. The transition of porous anodising to the ‘burning’ type occurred at 22–25 V. Under appropriate anodising conditions ordered hexagonal cell arrays can be formed.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89231377","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":"Evaluation of metallic structures and material properties of thermal sprayed coatings using stainless-steel wires","authors":"Y. Mantani, T. Saka, M. Ichiyanagi, D. Sugino","doi":"10.1080/00202967.2022.2111842","DOIUrl":"https://doi.org/10.1080/00202967.2022.2111842","url":null,"abstract":"ABSTRACT To evaluate the fundamental differences between the standard wire flame-sprayed coatings of stainless-steel wires, the differences in their characteristics are discussed from a metallurgical point of view. Austenitic (SUS304 and SUS316) and martensitic (SUS420J2) stainless steels were used in this study. The SUS420J2 and SUS304 sprayed coatings were composed of austenite and martensite, whereas the SUS316 sprayed coating was composed of only austenite. The dense thermally sprayed coating of SUS316 was due to oxygen distribution, which corresponds to marble-pattern oxidised structures. Additionally, an increase in the carbon content was observed after thermal spraying. However it is difficult to determine the distribution of carbon; therefore, it is considered that carbon distribution is supersaturated at a certain amount and carbon exists as a solid solute in the austenite phase. Finally, the increase in the carbon content is related to the progress of corrosion.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84504226","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":"Improving wear and corrosion protection of AISI 304 stainless steel by Al2O3-TiO2 hybrid coating via sol-gel process","authors":"R. Gecu, B. Birol, Mücahid Özcan","doi":"10.1080/00202967.2022.2117884","DOIUrl":"https://doi.org/10.1080/00202967.2022.2117884","url":null,"abstract":"ABSTRACT Al2O3, TiO2, and Al2O3-TiO2 coatings were deposited on AISI 304 stainless steel plates by the sol–gel dipping technique, and the effects of the coating composition on microstructure, wear, and corrosion characteristics were examined. Tribological features were determined by ball-on-disc sliding tests against an Al2O3 ball under a 10 N load, while corrosion properties were evaluated by potentiodynamic polarisation tests performed in 3.5% wt. NaCl solution. γ-Al2O3, α-Al2O3, and rutile phases were detected in the hybrid coatings. The highest coating thickness was obtained in single Al2O3 film and decreased with an increasing amount of TiO2 nanoparticles. The single Al2O3 layer had both the highest wear resistance and the lowest corrosion resistance. Although TiO2 addition caused an increase in the wear rate, it improved the corrosion resistance of the coating by filling the voids in the Al2O3 film. The Al2O3-TiO2 hybrid film with a relative ratio of 6:1 as a candidate for the wear- and corrosion-resistant coating decreased wear and corrosion losses of the 304 substrates by 83% and 97%, respectively.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76649164","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":"A comprehensive review of vapour deposited coatings for cutting tools: properties and recent advances","authors":"N. Ariharan, C. G. Sriram, N. Radhika, S. Aswin, S. Haridas","doi":"10.1080/00202967.2022.2037343","DOIUrl":"https://doi.org/10.1080/00202967.2022.2037343","url":null,"abstract":"ABSTRACT The increasing demand for cost-efficient, high-quality machined products has led to a requirement for cutting tools that are able to provide a long tool life even when operating under extreme cutting conditions. Hard thin-film coatings deposited on tool substrates have been at the forefront of dealing with such demands. Such coatings provide cutting tools with properties like increased hardness, wear resistance, oxidation resistance, resistance to thermo-mechanical shocks, lower friction coefficient, etc. Vapour deposition techniques are widely used to deposit these thin films. Any variation in process parameters during deposition affects the properties of a coating and hence is a crucial factor to be considered. This review paper discusses some of the commercially used deposition methods, their effects on the crystal morphology, and the thermal and mechanical properties obtained in these coatings. Finally, this paper will also cover some of the recent advancements in hybrid coating technology, nanostructured coatings, and the prospects of sustainable machining.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88351794","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":"Dr Tony Hart BSc DTech FIMF (21st March 1942–12th April 2022)","authors":"C. Larson","doi":"10.1080/00202967.2022.2112868","DOIUrl":"https://doi.org/10.1080/00202967.2022.2112868","url":null,"abstract":"It was with some shock that IMF members heard earlier this year of the sudden death of Institute stalwart Tony Hart, just a few months after it was announced at the 2021 Institute AGM in November that he had been awarded the IMF’s prestigious Hothersall Memorial Award in recognition of his outstanding service to the materials finishing industry. After his early education at Wolverhampton Municipal Grammar School, he started work in 1957 as a Laboratory Assistant in Manders Paint Company in Wolverhampton, an immediate immersion in the surface finishing field which he was to serve all his working life. After studying for A-levels in chemistry, physics and maths at Wolverhampton Technical College, as it was then before reaching its eventual university status, he progressed to a degree in Applied Chemistry, at what is now Aston University, whilst employed at Joseph Lucas Electrical Ltd. as a trainee chemist. A research position at The International Nickel Research Laboratory led to some of the innovative developments that Tony became best known for, including the INCO chromic-sulphuric acid electrocolouring technique for stainless steel, and important advances in nickel electroforming. In January 1981 he set up Hart Coating Technology in Brierley Hill, and April 2008 saw a re-branding to Hart Materials Ltd., Wombourne, which he ran until his retirement in 2021, selling the company to PI-KEM Ltd. As well as becoming a recognised technology centre in its fields, the company supplied raw materials – principally metals and chemicals – to a wide range of manufacturing industries including conductive paint manufacture, conductive silicone gasket manufacture, solid oxide fuel cells, nickelbased batteries, powder metallurgy, metal injection moulding electroforming in nickel. The materials supply activity was supported by a strong technical experience of the relevant technologies accumulated over the many years in business. Much of the company’s business was related to nickel metal and nickel-based products, essential materials used in many diverse applications, and an obvious link to his earlier background at INCO. From cell phones to cars, batteries to paint, these products are used for a vast range of items that are indispensable in the twenty-first century. In recent years, other types of material were added to the product portfolio and, in line with demand, Hart Materials also developed a number of modified products specifically tailored to the individual needs of its customers. One of the recognisable features of Tony’s professional life, whether in marketing products or in advice and consultancy, was his way of making often quite complex knowledge easily understandable, and being able to operate with a quite unique combination of technological expertise and commercial understanding. Tony was awarded a Doctor of Technology by the Council for National Academic Awards (CNAA) in recognition of original contributions to a range of technological processes (i","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73621217","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":"Comparative study on machining performance of TiAlSiN, AlTiN/TiAlSiN-coated cutting tools","authors":"C. G. Sriram, N. Ariharan, N. Radhika","doi":"10.1080/00202967.2022.2095113","DOIUrl":"https://doi.org/10.1080/00202967.2022.2095113","url":null,"abstract":"ABSTRACT The present study investigates the microstructure of monolayer TiAlSiN and bilayer AlTiN/TiAlSiN coatings deposited on WC-Co inserts through magnetron sputtering. Further, a comparative study on the tool life and wear characteristics of uncoated, monolayer and bilayer coated inserts was performed through dry turning of tempered EN-8 steel under extreme cutting conditions. The TiAlSiN coating showed a dense fine morphology whereas the AlTiN/TiAlSiN coating showed a mixed morphology with a columnar structure for the intermediate layer of AlTiN followed by a dense nanocrystalline structure for the top layer of TiAlSiN. The dry turning experiments show that the major form of wear mechanism observed during machining was crater wear. Both monolayer and bilayer coated inserts showed promising cutting performance and the bilayer coated inserts showed better tool life than the monolayer coated inserts under most of the cutting conditions.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79817255","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":"Nanoporous anodic alumina layers obtained from novel deep eutectic solvent formulations","authors":"P. M. V. Fernandes, O. Brîncoveanu, A. Pantazi, A. Petică, C. Pereira, A. Fernando Silva, M. Enăchescu, L. Anicăi","doi":"10.1080/00202967.2022.2105571","DOIUrl":"https://doi.org/10.1080/00202967.2022.2105571","url":null,"abstract":"ABSTRACT The possible fabrication of porous anodic oxide films on aluminium in ionic liquids based on choline dihydrogen citrate eutectic mixtures both with oxalic acid and isopropyl alcohol and ethylene glycol, has been investigated. The anodisation has been carried out in either potentiostatic or galvanostatic regime, at temperatures of 45–80°C, for different process durations. Quite compact, uniform anodic alumina layers have been obtained. Based on AFM and SEM investigations, pore diameters between 50 and 80 nm and interpore distances in the range of 160–200 nm have been estimated, with values influenced by the electrolyte type and anodisation conditions. The highest anodisation rate of about 0.4 µm min−1 has been determined by applying operation temperatures of 60°C. The recorded EIS spectra showed a pure capacitive behaviour and high anodic oxide resistances of 106–107 Ω cm2 order.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85812914","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":"Adhesion strength of electrodeposited Ni, Zn, and Fe coatings with copper substrates","authors":"E. Shtapenko, V. A. Zabludovsky, V. Tytarenko","doi":"10.1080/00202967.2022.2107751","DOIUrl":"https://doi.org/10.1080/00202967.2022.2107751","url":null,"abstract":"ABSTRACT This paper presents the adhesive strength values of electrodeposited nickel, zinc, and iron coatings on copper substrates at various deposition parameters, including laser-assisted stimulation of the deposition process. One of the factors determined to be responsible for the adhesive strength of metal films with a metal substrate is the formation of a diffusion zone at the ‘coating-substrate’ interface. It is shown that an increase in adhesive strength is achieved due to the expansion of the diffusion zone and the formation of solid solutions. The decrease in adhesive strength at high overpotentials is associated with the release of hydrogen and the formation of intermediate phases.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81502156","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":"Study of a system for creating a statistical model of the electroless plating of Cu-Ni-P alloys","authors":"M. Georgieva","doi":"10.1080/00202967.2022.2107773","DOIUrl":"https://doi.org/10.1080/00202967.2022.2107773","url":null,"abstract":"ABSTRACT The electroless plating method is the most convenient for the metallisation of dielectrics. During this statistical study of the process, complex relationships were found between the composition of the electrolyte and the deposition regime. The complexity of this technology is an important multifactorial object of the study. An adequate linear regression model for electroless deposition of Cu-Ni-P alloy coatings was obtained by conducting a planned factorial experiment. It allows predicting the thickness of the electroless deposited alloy coating based on certain values of the input parameters (concentrations of copper sulphate, nickel sulphate and sodium hypophosphite) in the studied factor space, as well as further optimisation of the process.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72936786","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":"A novel strategy for designable alloy coatings in electroless plating","authors":"Guixin Dai, Shiping Wu, Xixi Huang, Xiaodong Zhang, Ming-jie Wang","doi":"10.1080/00202967.2022.2108574","DOIUrl":"https://doi.org/10.1080/00202967.2022.2108574","url":null,"abstract":"ABSTRACT A novel strategy for the preparation of designable alloy coatings by Al-induced electroless plating combined with thermal diffusion was proposed in the paper. Based on the method, Al-induced electroless plating was used to create multilayer coatings. Thermal diffusion is used to alloy the multilayer coatings to form alloy coatings. This technique can resolve the design problem of alloy coatings in electroless plating. For designable alloy coatings, multilayer coatings were prepared as the basic materials. Thus, the preparation possibility and procedure of multilayer coatings were investigated primarily. However, the multilayer coatings were alloyed by thermal diffusion. The coatings of electroless plating were required to accommodate high temperatures. The preparation methods for coatings have been discussed in this paper to satisfy this condition. The results show that the preparation method of designable alloy coatings by Al-induced electroless plating combined with thermal diffusion is feasible. The coatings prepared by Al-induced electroless plating were suitable for thermal diffusion. During the deposition process, the multilayer coatings were produced in the order of metal activity. Finally, the designed alloy coatings were successfully formed based on the preparation method. Thus, this is a promising approach to overcome the challenges of creating designable alloy coatings in the field of electroless plating and in the composition design of microlattice materials.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-08-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91155434","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}