Transactions of the IMF最新文献_第7页

Surface modification of ABS polymer by electroless deposition of thin nickel film from a solution without reducing agent 用无还原剂溶液化学沉积镍薄膜对ABS聚合物进行表面改性

Transactions of the IMF Pub Date : 2023-03-31 DOI: 10.1080/00202967.2023.2185976

V. Chakarova, M. Petrova, E. Dobreva, D. Lazarova, M. Monev

引用次数: 0

Tribological behaviour of HVOF-sprayed Ni-based self-lubricating composite coatings hvof喷涂镍基自润滑复合涂层的摩擦学性能

Transactions of the IMF Pub Date : 2023-03-31 DOI: 10.1080/00202967.2023.2185974

Ajay Kumar, Manoj Kumar, S. Tailor

引用次数: 0

Structural and morphological characteristics of nanocrystalline palladium deposits prepared from ammonia complex by electrodeposition technique 电沉积法制备氨配合物纳米钯镀层的结构和形态特征

Transactions of the IMF Pub Date : 2023-03-31 DOI: 10.1080/00202967.2023.2186600

K. Ranjithkumar, K. Geetha, V. Prabu, S. Senthilkumar, R. Sekar

{"title":"Structural and morphological characteristics of nanocrystalline palladium deposits prepared from ammonia complex by electrodeposition technique","authors":"K. Ranjithkumar, K. Geetha, V. Prabu, S. Senthilkumar, R. Sekar","doi":"10.1080/00202967.2023.2186600","DOIUrl":"https://doi.org/10.1080/00202967.2023.2186600","url":null,"abstract":"ABSTRACT The present work is focused on the eco-friendly electrodeposition of nanocrystalline palladium on the copper substrate using an ammonia complex for the replacement of gold. The detailed study on the electrodeposition of palladium prepared from ammonia complex and solution characteristics such as current efficiency and thickness of the film growth per hour was evaluated using Faraday’s law of electrolysis, and the quality of the deposits was observed by Field Emission Scanning Electron Microscopy (FESEM). The crystal structure orientation of the crystal and lattice parameters were analysed by X-ray diffraction and crystal sizes were calculated using the Debye–Scherrer equation. The deposits produced from gelatin-containing electrolyte showed the lowest crystal size which indicates that grain refinement was assisted by additives. The microstructures of the palladium deposits were determined by FESEM and the surface morphology of the palladium deposits was evaluated using AFM. The elemental composition and oxidation state of the palladium deposits were investigated by XPS. These results revealed the presence of additives giving smooth uniform homogenous surface morphology. Hence, gelatin served as a grain modifier.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84459107","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}

引用次数: 0

Nickel-coated 3D-printed titanium electrodes for electrochemical flow reactors 用于电化学流动反应器的镍涂层3d打印钛电极

Transactions of the IMF Pub Date : 2023-03-30 DOI: 10.1080/00202967.2023.2185977

L. F. Arenas, B. Miranda-Alcántara, N. Kaishubayeva, A. Abahussain, F. Rivera, C. Ponce de León, F. Walsh

{"title":"Nickel-coated 3D-printed titanium electrodes for electrochemical flow reactors","authors":"L. F. Arenas, B. Miranda-Alcántara, N. Kaishubayeva, A. Abahussain, F. Rivera, C. Ponce de León, F. Walsh","doi":"10.1080/00202967.2023.2185977","DOIUrl":"https://doi.org/10.1080/00202967.2023.2185977","url":null,"abstract":"ABSTRACT Electrocatalyst-coated metallic electrodes for electrochemical flow reactors have many applications in electrosynthesis, environmental remediation and energy conversion. This work presents novel nickel-coated titanium-alloy electrodes produced by means of direct metal laser sintering and constant current electrodeposition in an additive-free Wood’s nickel strike then a Watts nickel bath. Several 3D porous architectures were created in Ti-6Al-4 V alloy and coated, their digital design being the subject of previous work. Nickel coatings were macroscopically uniform and adherent with a thickness up to 5.8 µm, depending on the surface area of the electrodes. The morphology of nickel was cauliflower-like, with crystallisation growth occurring as spherical grains, as typically found for deposits from pH buffered Watts baths. Some degree of coating porosity was observed at electrodes of large surface area, indicating the need for longer deposition times. The results open the path for further optimisation of electrodeposition parameters and the development of bath additives to tailor deposit properties.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-03-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75160113","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}

引用次数: 1

Dr JPG Farr FIMF (1931–2023) 法尔博士(1931-2023)

Transactions of the IMF Pub Date : 2023-03-04 DOI: 10.1080/00202967.2023.2182947

Trevor Crichton

引用次数: 0

CF Ipal – a case study of the chrome-free drop in replacement for IP1041 hexavalent chrome coating 用无铬滴剂替代IP1041六价铬涂层的案例研究

Transactions of the IMF Pub Date : 2023-03-04 DOI: 10.1080/00202967.2023.2182946

P. Holder

引用次数: 0

Development of electroless NiSnP plating with excellent bath stability using nickel hydroxide 采用氢氧化镍制备具有优异浴液稳定性的化学镀NiSnP

Transactions of the IMF Pub Date : 2023-02-23 DOI: 10.1080/00202967.2023.2170030

T. Kanno, Y. Umeda, H. Honma, O. Takai, K. Tashiro

{"title":"Development of electroless NiSnP plating with excellent bath stability using nickel hydroxide","authors":"T. Kanno, Y. Umeda, H. Honma, O. Takai, K. Tashiro","doi":"10.1080/00202967.2023.2170030","DOIUrl":"https://doi.org/10.1080/00202967.2023.2170030","url":null,"abstract":"ABSTRACT In general, NiSn alloys are known as plating films with elegant lustre and excellent corrosion resistance. Electroplating methods have already reached a practical application level because high Sn-containing films can be obtained. On the other hand, electroless plating methods have not yet reached the level of practical application because the Sn content in the deposited film is not only low but also the corrosion resistance is not sufficient. The authors have studied in detail the composition of electroless plating baths to obtain NiSnP films with Sn content above 50 wt%. In particular, the plating bath using nickel hydroxide instead of nickel sulphate as the Ni source increased bath stability and obtained high Sn content. The effects of Ni source in the bath on the deposition films were studied. The bath using nickel hydroxide as the Ni source was almost unaffected by the bath ratio. Furthermore, the amount of dissolved oxygen (DO) in the plating bath also varied depending on the Ni source, affecting the composition of the deposited film and the bath stability. It was confirmed that electroless plating baths using nickel hydroxide have excellent bath stability and can be applied to a relatively wide range of plating operation conditions to obtain high Sn-containing films. In addition, the corrosion resistance was improved by increasing the Sn content in the film. It was also confirmed that the NiSnP with high Sn content does not dissolve in nitric acid.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-02-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75103227","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}

引用次数: 0

Producing a thin coloured film on stainless steels – a review. Part 2: non-electrochemical and laser processes 在不锈钢上产生一种薄的彩色薄膜——综述。第2部分:非电化学和激光加工

Transactions of the IMF Pub Date : 2023-01-06 DOI: 10.1080/00202967.2022.2154495

G. Alliott, R. Higginson, G. Wilcox

{"title":"Producing a thin coloured film on stainless steels – a review. Part 2: non-electrochemical and laser processes","authors":"G. Alliott, R. Higginson, G. Wilcox","doi":"10.1080/00202967.2022.2154495","DOIUrl":"https://doi.org/10.1080/00202967.2022.2154495","url":null,"abstract":"ABSTRACT The high lustre and desirable aesthetics of stainless steels have resulted in their application for decorative purposes in a variety of industries including homeware and automotive, but primarily in architecture. It is possible to further enhance the aesthetics of stainless steel by imparting a thin coloured film on the surface that does not impair any inherent desirable properties, including corrosion resistance. There are two different types of thin coloured films, iridescent and non-iridescent. Iridescent colour can visually change depending on the angle from which it is viewed and is a consequence of a phenomenon known as thin film interference. Non-iridescent colour is created by the absorbance of light waves of all but a given wavelength, the colour is intrinsic to the thin film and does not change with viewing angle. For the purpose of this review, colouring techniques have categorised into three groups, electrochemical, non-electrochemical and laser colouring. Laser colouring can be utilised as either an electrochemical or non-electrochemical process and is particularly suited to colouring small areas and intricate shapes. Non-electrochemical techniques, such as physical vapour deposition (PVD) and thermal tinting, avoid the use of toxic chemicals, however, they present other challenges, including energy consumption and scrappage rate. The use of non-electrochemical and laser techniques to colour stainless steel can negate the use of toxic hexavalent chromium; however, they are yet to be widely adopted by industry for this purpose. Therefore, it is important to consider each technique to understand why this is the case. The present Part 2 of the review discusses non-electrochemical and laser processes used to produce coloured films on stainless steel, whereas Part 1 discussed the electrochemical processes.","PeriodicalId":23251,"journal":{"name":"Transactions of the IMF","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88403894","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}

引用次数: 2

Enhanced photocatalytic activity of TiO2 nanostructures produced by anodic oxidation of pre-deformed Cp–Ti 预变形Cp-Ti阳极氧化制备TiO2纳米结构的光催化活性增强

Transactions of the IMF Pub Date : 2023-01-04 DOI: 10.1080/00202967.2022.2154938

M. Altay, Murat Çağlar Baydoğan

引用次数: 0

Report of the President to the AGM, held at New Exeter House, 8th December 2022 2022年12月8日在新埃克塞特大厦举行的总裁年度大会报告

Transactions of the IMF Pub Date : 2023-01-02 DOI: 10.1080/00202967.2023.2165305

K. Ryder

引用次数: 0