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Tribological Behavior of WC-12Co Air Plasma-Sprayed Coating at Elevated Temperatures
Geng, Zhe; Duan, Deli; Hou, Sihan; Li, Shu; duandl@imr.ac.cn
2016
Source PublicationTRIBOLOGY TRANSACTIONS
ISSN1040-2004
Volume59Issue:1Pages:55-61
AbstractThe friction and wear performance of WC-12Co air plasma-sprayed (APS) coating at temperatures of 25-650 degrees C under loads of 8 and 28 N in at atmospheric environment have been studied by a ball-on-disc tribometer. The effect of temperature and load on the tribological behavior of WC-Co coating was investigated. The results show that under a load of 8 N, the wear volume of the coating increases at 250 degrees C due to the coating splat delamination and then it gradually decreases at 350-500 degrees C. The friction could promote the formation of double oxide (CoWO4), which is beneficial to reduce friction and wear. At higher temperatures, the wear volume increases again due to the removal of oxides. Under a load of 28 N, the wear volume of the coating increases enormously at 250 degrees C due to the serious splat delamination. At 350 degrees C, the load promotes double oxide formation, resulting in an early decrease in the coefficient of friction and a rapid reduction in wear volume. Although the wear volume decreases at 350-500 degrees C, it is 10-fold higher than that under a load of 8 N. Above 500 degrees C, the differences of the wear volumes of coatings under the two loads become less obvious, and similar trends also appear for the coefficients of friction. The synergistic effect between the load and temperature on the friction and wear mechanism of WC-12Co APS coating is discussed.
description.department[geng, zhe] tsinghua univ, state key lab tribol, beijing 100084, peoples r china ; [geng, zhe ; duan, deli ; hou, sihan ; li, shu] chinese acad sci, inst met res, shenyang 110016, peoples r china
KeywordWc-co Coating Elevated Temperature Load Friction And Wear
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/75224
Collection中国科学院金属研究所
Corresponding Authorduandl@imr.ac.cn
Recommended Citation
GB/T 7714
Geng, Zhe,Duan, Deli,Hou, Sihan,et al. Tribological Behavior of WC-12Co Air Plasma-Sprayed Coating at Elevated Temperatures[J]. TRIBOLOGY TRANSACTIONS,2016,59(1):55-61.
APA Geng, Zhe,Duan, Deli,Hou, Sihan,Li, Shu,&duandl@imr.ac.cn.(2016).Tribological Behavior of WC-12Co Air Plasma-Sprayed Coating at Elevated Temperatures.TRIBOLOGY TRANSACTIONS,59(1),55-61.
MLA Geng, Zhe,et al."Tribological Behavior of WC-12Co Air Plasma-Sprayed Coating at Elevated Temperatures".TRIBOLOGY TRANSACTIONS 59.1(2016):55-61.
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