Tribology - Materials, Surfaces & Interfaces最新文献

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Assessment on tribological responsiveness of different polymers on AISI 52100 steel using a sensitive reciprocating tribometer 使用灵敏的往复式摩擦磨损仪评估不同聚合物对 AISI 52100 钢的摩擦响应性

Tribology - Materials, Surfaces & Interfaces Pub Date : 2024-01-15 DOI: 10.1177/17515831231212636

A. C. Opia, M. Abdollah, H. Amiruddin, Mohd Kameil Abdul Hamid, Fazila Binti Mohd Zawawi

{"title":"Assessment on tribological responsiveness of different polymers on AISI 52100 steel using a sensitive reciprocating tribometer","authors":"A. C. Opia, M. Abdollah, H. Amiruddin, Mohd Kameil Abdul Hamid, Fazila Binti Mohd Zawawi","doi":"10.1177/17515831231212636","DOIUrl":"https://doi.org/10.1177/17515831231212636","url":null,"abstract":"Bio-based lubricants are becoming more prevalent in the lubrication sector to substitute the traditional petroleum based. In the current study, jatropha oil was used as the base lubricant with polytetrafluoroethylene (PTFE) and organic Eichhornia crassipes-carboxymethylcellulose (EC-CMC) polymers as additives. The research employed a sensitive reciprocating apparatus to examine the tribological responsiveness of the formulation on AISI 52100 steel material in terms of coefficient of friction (COF), wear rate, wear scar diameter, and surface roughness (Ra). Polymeric and Fourier transform infrared spectroscopy studies were conducted on the formulations. The findings indicate that both additives in jatropha in concentrations produced higher COF than unmodified jatropha oil at 100 and 250 r/min under low load (15 N), but improved performance under higher load (35 N). Under wear rate examination, the formulations demonstrated a slight reduction under higher working conditions; however, the 0.5 wt% EC-CMC blended sample performed poorly in terms of both COF and wear rate. In the research, 0.4 wt% PTFE and 0.3 wt% EC-CMC produced the best outcomes for their respective categories. The nano lubricant exhibited remarkable performance when tested under more demanding working conditions (500 r/min and 45 N) but performed better when 0.4 wt% PTFE was utilized, which is comparable to the reference commercial shell lubricant used. The ability of the nano lubricants to penetrate and generate some films at the sliding contact during operation shows their enhanced performance at higher operating conditions, which was supported by the results of the energy-dispersive X-ray study.","PeriodicalId":131619,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":"20 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139528853","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

The effect of temperature on the transfer layer of an aluminium alloy on tool steel and the effect of CrN coating 温度对工具钢上铝合金转移层的影响以及 CrN 涂层的影响

Tribology - Materials, Surfaces & Interfaces Pub Date : 2024-01-15 DOI: 10.1177/17515831231212633

M. Kalin, J. Jerina, Sandan Kumar Sharma, Janez Kovač

{"title":"The effect of temperature on the transfer layer of an aluminium alloy on tool steel and the effect of CrN coating","authors":"M. Kalin, J. Jerina, Sandan Kumar Sharma, Janez Kovač","doi":"10.1177/17515831231212633","DOIUrl":"https://doi.org/10.1177/17515831231212633","url":null,"abstract":"It is essential to explore temperature's crucial role while unveiling the intricacies of tribological interplay in CrN-coated steel-alloy systems. In the present study, tribological potential of CrN-coated hot-work tool steel was investigated under unidirectional single-pass sliding wear conditions. The sliding wear tests were performed at different temperatures (i.e., 20 °C, 100 °C, 200 °C, 300 °C, 400 °C and 500 °C) for the different sliding distances between 2 mm and 68 mm to explore the effect of temperature on the initiation and evolution of the transfer of an aluminium alloy (EN AW-6060). The effect was studied in terms of the contact area of the aluminium alloy and the volume transferred to the surface of the CrN. In addition, the structure of the wear trace and the equivalent friction coefficient were monitored with respect to the sliding distance and the temperature. The results show the strong dependency of the tribological potential of the CrN coating and the aluminium alloy on the temperature but show insignificant dependency on the sliding distance. When sliding up to 200 °C, the transfer was found to be dependent on the surface roughness of the coating, while strong adhesion led to the aluminium alloy's transfer during sliding at higher temperatures, that is, above 300 °C. At 500 °C, the CrN coating formed a self-protective Cr2O3 oxide that reduced the adhesive transfer of the alloy to the CrN compared to that at 200 °C–300 °C.","PeriodicalId":131619,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":"7 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139529801","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

Performance analysis of twin-layer AlTiN and TiCN coated inserts during high speed turning of SS304 with synthetic coolant at 0°C 在 0°C 使用合成冷却剂高速车削 SS304 时的双层 AlTiN 和 TiCN 涂层刀片性能分析

Tribology - Materials, Surfaces & Interfaces Pub Date : 2024-01-15 DOI: 10.1177/17515831231222846

Pravin Patil, P. Karande

{"title":"Performance analysis of twin-layer AlTiN and TiCN coated inserts during high speed turning of SS304 with synthetic coolant at 0°C","authors":"Pravin Patil, P. Karande","doi":"10.1177/17515831231222846","DOIUrl":"https://doi.org/10.1177/17515831231222846","url":null,"abstract":"Industries are facing challenges to machine hard materials in economical ways and to improve the output machining characteristics. In pursuit of effective problem-solving, two distinct sets of AlTiN and TiCN coated inserts were meticulously prepared. Their respective performances were subsequently compared, using the output machining parameters as reference points. AlTiN inserts are fabricated by applying a twin layer consisting of Al50Ti40N (2 µm thickness) and Al60Ti50N (3 µm thickness) over the substrate. The insert obtained from this process has exceptional strength and remarkable toughness. Another substrate is coated with a 3 µm thick layer of TiCN, as TiCN coating offers excellent resistance against shock loads and impact stress. Previous research conducted by scholars has already established the efficacy of using synthetic coolant at 0°C for machining SS304. Hence, synthetic coolant was employed in combination with the aforementioned two types of inserts during their performance testing. A comprehensive analysis revealed that the performance of twin-layer AlTiN inserts surpassed that of TiCN inserts, showcasing superior tool life, reduced tool wear, and enhanced surface finish quality. The replacement of TiCN inserts with AlTiN inserts resulted in an impressive increase of around 70% in tool life and approximately 30% in surface finish quality.","PeriodicalId":131619,"journal":{"name":"Tribology - Materials, Surfaces & Interfaces","volume":"19 25","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139529085","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

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Tribology - Materials, Surfaces &amp; Interfaces最新文献

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