| ZHU Zhen,ZHANG Hong,ZHANG Jian,MA Rui-yong,SHEN Cheng-jin.Study on Sliding Wear Characteristic of HVOF Sprayed WC-CrNi Composite Coatings[J],(3):12-15 |
| Study on Sliding Wear Characteristic of HVOF Sprayed WC-CrNi Composite Coatings |
| Received:December 23, 2011 Revised:June 20, 2012 |
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| DOI： |
| KeyWord:high velocity oxy-fuel spraying WC-CrNi sliding wear wear mechanism |
| Author | Institution |
| ZHU Zhen |
School of Material Science and Engineering, China University of Mining & Technology, Xuzhou , China |
| ZHANG Hong |
XCMG Excavator Machinery Limited Company, Xuzhou , China |
| ZHANG Jian |
XCMG Excavator Machinery Limited Company, Xuzhou , China |
| MA Rui-yong |
XCMG Excavator Machinery Limited Company, Xuzhou , China |
| SHEN Cheng-jin |
School of Material Science and Engineering, China University of Mining & Technology, Xuzhou , China |
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| Abstract: |
| WC-CrNi coating was deposited by HVOF technique. The sliding wear resistance of coating was investigated under self-matching frication couple and three body wear conditions, the morphology and composition change before and after wear were analyzed. The results showed that WC-CrNi coating had more homogeneous, dense microstructure owing to HVOF technique. WC-CrNi coating exhibited great differences in frictionco efficients under two wear conditions. Friction coefficient of coating was not stable, owing to the formation of three body wear increasing frictional resistance, and it experienced a severer worn. The wear mechanism of the coating under both wear conditions was different. The wear mechanism was WC layered peel under self-matching frication couple, the main abrasion model after three body wear were micro-cutting and plastic deformation. |
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