| CHEN Dong,LUO Ming-bo,CHEN Xiao-qin,CHEN Han-bin,ZHANG Long-ping.Microstructure and Frictional Behaviour of Plasma-sprayed NiCr-Cr3C2Based Self-lubricating Composite Coatings[J],42(3):52-55 |
| Microstructure and Frictional Behaviour of Plasma-sprayed NiCr-Cr3C2Based Self-lubricating Composite Coatings |
| Received:January 07, 2013 Revised:February 25, 2013 |
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| DOI： |
| KeyWord:plasma spraying self-lubricating coatings microstructure friction and wear |
| Author | Institution |
| CHEN Dong |
Military Delegation Office for Chengdu Region, Army Aviation Department of General Staff, Chengdu , China |
| LUO Ming-bo |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| CHEN Xiao-qin |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| CHEN Han-bin |
Southwest Technology and Engineering Research Institute, Chongqing , China |
| ZHANG Long-ping |
Southwest Technology and Engineering Research Institute, Chongqing , China |
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| Abstract: |
| NiCr-Cr3C2based self-lubricating composite coatings of different content of cladded MoS2by Ni powder were deposited on 304 stainless steel by plasma spraying technology. The phase composition, microstructure and frictional behaviour of coatings were reasearched. The results indicate that the kinds of coatings have same phase composition, whch is Cr7C3, Ni and MoS2. Mechanical bonding forms between coating and substrate, the porosity of coatings is low, a small amount microcrack exsists on the surface of coatings. Excessive or scarce cotent of cladded MoS2by Ni powder in the coatings can induce worsening of frictional behaviour, the lowest value of friction coefficient and wear rate are separately 0 . 36 and 3 . 3 X10-4mg / s, which the content of cladded MoS2by Ni powder in the coatings is 30 % . |
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