Effect of LaF3 on the Tribological Properties of Ni-based Self-lubricating Materials in a Wide Temperature Range
Xiao Rongzhen; Cao Xue; An Guosheng; Feng Li
2020-01
Source PublicationRARE METAL MATERIALS AND ENGINEERING
ISSN1002-185X
Volume49Issue:1Pages:267-273
AbstractIn order to enhance the stability of the materials and reduce the influence of friction and wear on the material properties in the wide temperature range, Ni60 alloy powder was used as the matrix materials, and the composite materials of nickel-based self-lubrication with different LaF3 contents were prepared by spark plasma sintering (SPS) technology. The wide-temperature tribological properties of composite materials in air environment were tested by HT-1000 high temperature friction and wear tester, GBS-Smart WLI white light interference three-dimensional profiler, SEM, XRD, etc. Results indicate that the prepared nickel-based self-lubricating composites have excellent tribological properties in a wide temperature range. When the content of LaF3 is 6%, the average friction coefficient varies from 0.189 to 0.288 in the temperature range from 200 degrees C to 800 degrees C, the lowest friction coefficient of 0.189 is obtained at 600 degrees C and the average wear rate is on the order of 10(-5) mm(3)/N.m, when the sample exhibits the optimal tribological properties. It is because SrSiO3, SrMoO4, La6MoO12 are formed at a high temperature of the composite materials with the content of 6%, the direct contact of the surface is prevented by the formed salt transfer films and the shear strength of the contact layer is reduced, thereby the stability of the material being improved significantly in a wide temperature range. As the test temperature is increased to 800 degrees C, the friction coefficient of the composite increases slightly due to high temperature oxidations, but remains at a low level of 0.2.
Keywordspark plasma sintering friction and wear wide temperature range high temperature self-lubrication
Indexed BySCI
Language中文
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000509418200034
PublisherNORTHWEST INST NONFERROUS METAL RESEARCH
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/64207
Collection材料科学与工程学院
省部共建有色金属先进加工与再利用国家重点实验室
Corresponding AuthorXiao Rongzhen
AffiliationLanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
First Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Corresponding Author AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
First Signature AffilicationState Key Laboratory Of Gansu Advanced Non-Ferrous Metal Materials
Recommended Citation
GB/T 7714
Xiao Rongzhen,Cao Xue,An Guosheng,et al. Effect of LaF3 on the Tribological Properties of Ni-based Self-lubricating Materials in a Wide Temperature Range[J]. RARE METAL MATERIALS AND ENGINEERING,2020,49(1):267-273.
APA Xiao Rongzhen,Cao Xue,An Guosheng,&Feng Li.(2020).Effect of LaF3 on the Tribological Properties of Ni-based Self-lubricating Materials in a Wide Temperature Range.RARE METAL MATERIALS AND ENGINEERING,49(1),267-273.
MLA Xiao Rongzhen,et al."Effect of LaF3 on the Tribological Properties of Ni-based Self-lubricating Materials in a Wide Temperature Range".RARE METAL MATERIALS AND ENGINEERING 49.1(2020):267-273.
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