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| 摘要: |
| 利用ＣＯ２连续激光器，对耐热铸铁表面进行了Ｎｉ基ＷＣ、Ｎｉ基ＷＣ中加入少量稀土元素ＣｅＯ２等合金粉末的激光熔敷，研究了不同成分激光熔敷层的高温硬度，高温干磨磨损性能，对摩擦磨损后的表面形貌进行了分析研究，试验结果表明，Ｎｉ２１＋２０％ＷＣ＋０．５％ＣｅＯ２熔么的高温性能较好。 |
| 关键词: 激光熔敷 高温 磨擦磨损性能 镍基合金层 |
| DOI： |
| 分类号:TG156.99 |
| 基金项目: |
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| Friction and Wear Behavior of Laser Remelted Ni-based Alloy Coatings at High Temperature |
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Zheng shian Wang shunxing Dong Qiming Liu Suqin Tian Baohong
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| Abstract: |
| In this paper,two Ni-base WC coatings with and without rare earth element (CeO_2) were remelted on the surface of a heat-resistant cast iron by high power CO_2 laser. Their hardness and friction and wear behaviors at high temperature were investigated. The surface morphologies after wear were analysed by SEM. The results showed that the coating of Ni21+20%WC +0.5%CeO_2 displays the optimum high temperature performance. |
| Key words: Laser remelted alloy coating, Hardness of high temperature abrasive-wear at high temperature |
