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2638573 
Journal Article 
Characterization of Ni-based alloy submicron WS2/CaF2 composite coatings deposited by high velocity oxy-fuel (HVOF) spray process 
Zhang, X; Zhang, L; Huang, Z 
2014 
Yes 
Advanced Materials Research
ISSN: 1022-6680 
TRANS TECH PUBLICATIONS LTD 
DURNTEN-ZURICH 
Advanced Materials Research 
881-883 
1407-1411 
WOS:000339034900286 
Ni-based alloy submicron WS2/CaF2 composite coatings were successfully produced through high velocity oxy-fuel (HVOF) spraying process. Microstructure characterization and morphology analysis on coatings were conducted using scanning electron microscopy and X-ray diffractometry. Tribological properties of coatings were carried out using a pin-on-ring tribometer at room temperature and 500 degrees C, respectively. Results showed that WS2 in particles did not entirely decomposed during spraying process, submicron WS2 and CaF2 were uniformly distributed throughout the coating. Which lead a dense coating and a lower friction coefficient and better wear resistance. In ambient temperature, WS2 in coatings played a main role of lubrication, friction coefficient of coatings was in the rage of 0.25 similar to 0.35. But with the increasing of temperature, WS2 failed to provide solid lubricating films for pyrolysis, and CaF2 did not fully transfer from brittleness to plasticity, restrained solid lubricating film forming, friction coefficient reached to 0.45. Furthermore, average adhesive strength between coating/substrate was above 30MPa, which had positive affect on wear resistance of coatings. 
Submicron tungsten disulphide; Self-lubrication composite coating; HVOF spraying 
Zeng, J; Li, J; Zhu, H; 
978-3-03785-994-0 
3rd International Conference on Chemical, Metallurgical Engineering (ICCMME 2013) 
Zhuhai, PEOPLES R CHINA