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High Temperature Oxidation and Tribological Behaviors of NiCrAl-Graphite Self-Lubricating Composites
Kong, Xuan1; Liu, Yang2; Chen, Minghui1; Zhang, Tao1; Wang, Fuhui1
Corresponding AuthorLiu, Yang(liuyang@imr.ac.cn) ; Chen, Minghui(mhchen@mail.neu.edu.cn)
2021-02-09
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Pages13
AbstractNickel-graphite self-lubricating composites are a promising candidate to be used in turbine constructions that are usually exposed to high temperature oxidation and wear. However, the high-temperature stability of graphite as well as the effect that the oxide scale will play on the following wear process are still yet in debate. In this work, oxidation behavior of a NiCrAl-graphite composite and the subsequent friction and wear performances were studied. Results indicate that graphite is stable in the composites after oxidation at T <= 400 degrees C for 300 h, which contributes synergistically with the thin oxide film to self-lubrication. The friction coefficient is below 0.20 and the wear rate is similar to 1.43 x 10(-5) mm(3) N-1 m(-1). The composite has the highest friction coefficient and wear rate when it was suffered from the high temperature oxidation at 500 degrees C. Once it was oxidized at 600 degrees C, a glaze layer would develop during the subsequent sliding. It plays a positive role in improving tribological properties though in the absence of lubricant phase of graphite, with to be exactly the friction coefficient and wear rate reduced by 13% and 21%, respectively, in comparison with the case of oxidation at 500 degrees C.
KeywordOxidation Self-lubricating composites Wear Graphite
Funding OrganizationFundamental Research Funds for the Central Universities ; Ministry of Industry and Information Technology Project
DOI10.1007/s40195-020-01188-9
Indexed BySCI
Language英语
Funding ProjectFundamental Research Funds for the Central Universities[N180212008] ; Fundamental Research Funds for the Central Universities[N181003001] ; Ministry of Industry and Information Technology Project[MJ-2017-J-99]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000616448400001
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160588
Collection中国科学院金属研究所
Corresponding AuthorLiu, Yang; Chen, Minghui
Affiliation1.Northeastern Univ, Shenyang Natl Lab Mat Sci, Shenyang 110819, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Kong, Xuan,Liu, Yang,Chen, Minghui,et al. High Temperature Oxidation and Tribological Behaviors of NiCrAl-Graphite Self-Lubricating Composites[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:13.
APA Kong, Xuan,Liu, Yang,Chen, Minghui,Zhang, Tao,&Wang, Fuhui.(2021).High Temperature Oxidation and Tribological Behaviors of NiCrAl-Graphite Self-Lubricating Composites.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13.
MLA Kong, Xuan,et al."High Temperature Oxidation and Tribological Behaviors of NiCrAl-Graphite Self-Lubricating Composites".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):13.
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