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| 摘要: |
| 采用内孔等离子喷涂技术在内径矿150mm的发动机气缸套内表面38CrMoAl基体上，在开放条件下制备Ni45—15％Mo涂层，并与缸套内表面渗氮硬层，在边界润滑条件下进行了环块滑动摩擦磨损对比试验。对内孔喷枪的粒子飞行速度进行了在线监测研究，对喷涂层与渗氮层的显微组织、显微硬度、结合强度对耐磨性的影响进行了分析。结果表明，38CrMoAl基上内孔等离子喷涂层与渗氮层相比磨损量减小0．3mg，摩擦因数减小0．02，涂层摩擦偶件表面榀伤小于渗氛层偶件．涂层综合麾檫学件能优干渗氛层。 |
| 关键词: 内孔等离子喷涂 Ni45-15％Mo涂层 38CrMoAl渗氮 滑动摩擦磨损 |
| DOI： |
| 分类号:TG174.442 |
| 基金项目:国家自然科学基金;国防重点实验室基金 |
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| Wear Resistance of Nitriding Layer and Internal Plasma Sprayed Ni45-15%Mo Coatings on 38CrMoAl |
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LIU Ming WANG Hai-jun HAI Zhi-hai LU Huan
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| Abstract: |
| The Ni45-15%Mo coating was prepared on the internal surface of the 12150L engine using an internal plasma spraying process. The sliding wear experiment of Ni45-15%Mo coating was carried out for comparing with the 38CrMoAl nitriding layer. The particles flight speed in the internal plasma spray was monitored on-line by SprayWatch 11 .The microstructure, microhardness and bonding strength of the coating were analyzed. The results showed that the wear loss of Ni45-15%Mo coating on 38CrMoAl steel was 0.3 mg lower than that of nitriding layer, the friction coefficient was 0.02 lower, and the wear loss of the counterpart of wear test was lower as well. The wear resistance of coating on 38CrMoAl steel was better than that of the nitriding layer. |
| Key words: internal plasma spraying Ni45-15%Mo coating nitriding layer sliding wear |
