Transactions of The Institute of Metal Finishing最新文献

Comparing brightness of nanocrystalline nickel coating with traditional bright nickel coating and investigation of stereochemistry of brightener molecules 纳米晶镍镀层与传统光亮镍镀层的亮度比较及增白剂分子的立体化学研究

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-11-09 DOI: 10.1080/00202967.2023.2264620

Aylar G. M. Ghashghaei, Mohammad Ebrahim Bahrololoom

{"title":"Comparing brightness of nanocrystalline nickel coating with traditional bright nickel coating and investigation of stereochemistry of brightener molecules","authors":"Aylar G. M. Ghashghaei, Mohammad Ebrahim Bahrololoom","doi":"10.1080/00202967.2023.2264620","DOIUrl":"https://doi.org/10.1080/00202967.2023.2264620","url":null,"abstract":"ABSTRACTNanocrystalline nickel coatings can be electrodeposited by using grain refiners like saccharin which consequently increase the gloss of the coating. Also, brighteners can produce bright coatings. The aim of this research was to compare the brightness of electroplated nanocrystalline nickel coating with traditional electroplated bright nickel coating. The coatings prepared from the bath containing saccharin and a bath with para-toluene sulphonamide had virtually the same gloss. Thus, instead of expensive brightening agents, saccharin can be used to achieve the same gloss in nickel plating. To investigate the stereochemistry of brightener molecules, the density functional theory (DFT) method was used at the computational level of B3LYP with the basis set 6-311G (d,p) ++ in a Gaussian software. The results of computational chemistry showed that the most probable state of adsorption of brightening additives is when the aromatic ring or a double bond or a triple bond of the brightener molecule approaches the cathode surface during the adsorption process.KEYWORDS: Nickel electrodepositionnanocrystalline nickelpara-toluene sulphonamidesaccharinbrightnessstereochemistryDFT Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":" 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135242226","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}

引用次数: 0

Annual Contents 2023 2023年度目录

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-11-02 DOI: 10.1080/00202967.2023.2265678

引用次数: 0

Transactions of the institute of materials finishing 2023, volume 101Author Index 《材料学会学报》2023年第101卷，作者索引

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-11-02 DOI: 10.1080/00202967.2023.2269711

引用次数: 0

Industry News 行业新闻

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-11-02 DOI: 10.1080/00202967.2023.2265675

引用次数: 0

Tribological study on cast iron based, graphite and CNT enriched hybrid HVOF coating from room temperature to 300°C 铸铁基、石墨和富碳纳米管杂化HVOF涂层室温至300℃的摩擦学研究

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-09-27 DOI: 10.1080/00202967.2023.2251756

Sonia Dangi, R. S. Walia, N. M. Suri, Sumit Chaudhary

{"title":"Tribological study on cast iron based, graphite and CNT enriched hybrid HVOF coating from room temperature to 300°C","authors":"Sonia Dangi, R. S. Walia, N. M. Suri, Sumit Chaudhary","doi":"10.1080/00202967.2023.2251756","DOIUrl":"https://doi.org/10.1080/00202967.2023.2251756","url":null,"abstract":"ABSTRACTIn this article, eco-friendly graphite has been produced from the carbonised rice husk, an environmental waste. Graphite, carbon nanotube (CNT) and cast iron powder were blended to produce the hybrid coating material. This hybrid coating material was deposited over the cast iron substrate using HVOF thermal spray. The microhardness of the coated sample increased by 42% as compared to the substrate. The morphological and elemental analysis was carried out using SEM, XRD and raman spectroscopy. The residual stresses developed in the coated sample were measured using an X-ray analyzer and found to be compressive, indicating a stable coating. A tribological investigation was carried out on a Pin-on-disc tribometer at ambient, 150°C, and 300°C temperatures. The coefficient of friction and specific wear rate reduced by ≈ 62% and ≈ 47% respectively. The SEM investigation showed evidence of free graphite as a solid lubricant over the coated samples.KEYWORDS: HVOF thermal spray coatingTribologySEMXRDResidual stressRaman spectroscopy AcknowledgementsThe authors would like to sincerely thank Metallizing Equipments Co. Pvt. Ltd., Jodhpur, for their support in sample preparation. The authors would also like to thank the management and staff of the Precision Manufacturing Laboratory, DTU, Delhi, and Tribology Centre, NIT, Srinagar for providing the tribological testing and material characterisation facilities.Disclosure statementNo potential conflict of interest was reported by the author(s).Author ContributionsSonia Dangi: Conceptualisation, data acquisition, drafting, reviewing, and editing the manuscript (First Author). R S Walia: Conceptualisation, review, and editing the manuscript (Co-Author). N M Suri: Conceptualisation, review, and editing the manuscript (Co-Author). Sumit Chaudhary: Conceptualisation, data acquisition, review, and editing the manuscript (Co-Author and corresponding author).","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135537291","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}

引用次数: 0

Characterisation and wear behaviour of SiC reinforced FeNiCrMo composite coating by HVOF process HVOF工艺制备SiC增强FeNiCrMo复合涂层及其磨损性能

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-09-18 DOI: 10.1080/00202967.2023.2246259

C. Durga Prasad, S. Kollur, M. Nusrathulla, G. Satheesh Babu, M. B. Hanamantraygouda, B. N. Prashanth, N. Nagabhushana

{"title":"Characterisation and wear behaviour of SiC reinforced FeNiCrMo composite coating by HVOF process","authors":"C. Durga Prasad, S. Kollur, M. Nusrathulla, G. Satheesh Babu, M. B. Hanamantraygouda, B. N. Prashanth, N. Nagabhushana","doi":"10.1080/00202967.2023.2246259","DOIUrl":"https://doi.org/10.1080/00202967.2023.2246259","url":null,"abstract":"ABSTRACTAnalysis of the sliding wear and microstructural characteristics of iron based composite coatings are discussed. The feedstock, which consisted of 30% SiC and 70% FeNiCrMo, was mechanically combined using a ball milling process. A steel substrate made of ASTM-SA213-T11 was then sprayed with the prepared feedstock using the High Velocity Oxy Fuel (HVOF) process. The coating and substrate were put through a sliding test using a pin-on disc tribometer while being subjected to typical loads of 10 and 20 N at 200°C and 300°C as well as ambient conditions without lubrication. The samples were subjected to microstructures and phase studies using SEM and XRD techniques. Wear characteristics including friction coefficient, volumetric material loss, and wear rates of the coating and substrate were calculated using system-produced data. The hardness and wear resistance of the coated samples were improved owing to the coating region containing hard carbide phases such as SiC and Fe2C.KEYWORDS: Iron basedFeNiCrMoSiCcomposite coatingASTM-SA213-T11 steelHVOFsliding wear AcknowledgementsThe authors are grateful to Aum Techno Spray, Bengaluru, India for providing the HVOF coating system used in this study.Disclosure statementNo potential conflict of interest was reported by the author(s).","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"161 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135110423","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}

引用次数: 4

Corrosion protection behaviour of electrogalvanised steel sheet by tetravalent vanadium ion 四价钒离子对电镀锌钢板的防腐性能

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-06-23 DOI: 10.1080/00202967.2023.2225285

Takeshi Matsuda, Shinichi Furuya, Rie Kaneko, Koji Fushimi

引用次数: 0

2022 awards 2022年奖

4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2023-02-22 DOI: 10.1080/00202967.2023.2175446

引用次数: 0

Countercurrent chromatography separation of saponins by skeleton type from Ampelozizyphus amazonicus for off-line ultra-high-performance liquid chromatography/high resolution accurate mass spectrometry analysis and characterisation. 逆流色谱法按骨架类型分离金丝楠木中的皂苷，用于离线超高效液相色谱/高分辨精确质谱分析和表征。

IF 4.1 4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2017-01-20 Epub Date: 2016-12-19 DOI: 10.1016/j.chroma.2016.12.053

Fabiana de Souza Figueiredo, Rita Celano, Danila de Sousa Silva, Fernanda das Neves Costa, Peter Hewitson, Svetlana Ignatova, Anna Lisa Piccinelli, Luca Rastrelli, Suzana Guimarães Leitão, Gilda Guimarães Leitão

{"title":"Countercurrent chromatography separation of saponins by skeleton type from Ampelozizyphus amazonicus for off-line ultra-high-performance liquid chromatography/high resolution accurate mass spectrometry analysis and characterisation.","authors":"Fabiana de Souza Figueiredo, Rita Celano, Danila de Sousa Silva, Fernanda das Neves Costa, Peter Hewitson, Svetlana Ignatova, Anna Lisa Piccinelli, Luca Rastrelli, Suzana Guimarães Leitão, Gilda Guimarães Leitão","doi":"10.1016/j.chroma.2016.12.053","DOIUrl":"10.1016/j.chroma.2016.12.053","url":null,"abstract":"Ampelozizyphus amazonicus Ducke (Rhamnaceae), a medicinal plant used to prevent malaria, is a climbing shrub, native to the Amazonian region, with jujubogenin glycoside saponins as main compounds. The crude extract of this plant is too complex for any kind of structural identification, and HPLC separation was not sufficient to resolve this issue. Therefore, the aim of this work was to obtain saponin enriched fractions from the bark ethanol extract by countercurrent chromatography (CCC) for further isolation and identification/characterisation of the major saponins by HPLC and MS. The butanol extract was fractionated by CCC with hexane - ethyl acetate - butanol - ethanol - water (1:6:1:1:6; v/v) solvent system yielding 4 group fractions. The collected fractions were analysed by UHPLC-HRMS (ultra-high-performance liquid chromatography/high resolution accurate mass spectrometry) and MSn. Group 1 presented mainly oleane type saponins, and group 3 showed mainly jujubogenin glycosides, keto-dammarane type triterpene saponins and saponins with C31 skeleton. Thus, CCC separated saponins from the butanol-rich extract by skeleton type. A further purification of group 3 by CCC (ethyl acetate - ethanol - water (1:0.2:1; v/v)) and HPLC-RI was performed in order to obtain these unusual aglycones in pure form.","PeriodicalId":23268,"journal":{"name":"Transactions of The Institute of Metal Finishing","volume":"66 1","pages":"92-100"},"PeriodicalIF":4.1,"publicationDate":"2017-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/j.chroma.2016.12.053","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80737897","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}

引用次数: 16

Structural and morphological characteristics of nanocrystalline copper from acid sulphate electrolytes 硫酸电解质中纳米铜的结构和形态特征

IF 1.9 4区材料科学

Transactions of The Institute of Metal Finishing Pub Date : 2015-08-06 DOI: 10.1179/0020296715Z.000000000262

R. Sekar

引用次数: 0