| CeO_2对镍基金属陶瓷激光熔覆层组织和耐磨蚀性能的影响 |
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| 引用本文： | 汪新衡,匡建新,何鹤林,朱航生.CeO_2对镍基金属陶瓷激光熔覆层组织和耐磨蚀性能的影响[J].材料保护,2009,42(2). |
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| 作者姓名： | 汪新衡 匡建新 何鹤林 朱航生 |
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| 作者单位： | 1. 湖南工学院机械工程系,湖南,湘潭,411201
2. 衡阳丰顺车桥有限公司产品部,湖南,衡阳,421002 |
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| 基金项目： | 湖南省科技计划项目，湖南工学院重点科研项目 |
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| 摘 要： | 稀土元素能改善金属表面溶覆层的组织结构及性能,尤其是耐磨、耐蚀及抗高温氧化性能.采用CO2横流激光器在45钢基体表面熔覆不同稀土氧化物(CeO2)含量的镍基TiC金属陶瓷复合层,对熔覆层进行了显微组织观察、显微硬度测量、耐磨性能和耐腐蚀性能测试.结果表明:加入适量的稀土氧化物CeO2(0.6%)可有效地减少复合层中的裂纹、孔洞和夹杂物,促进晶粒细化,提高熔覆层的组织均匀性及表面硬度,并且明显地改善了熔覆复合层的耐磨及耐蚀性能.
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| 关 键 词： | 激光熔覆 稀土氧化物 镍基金属陶瓷层 显微硬度 耐磨性能 耐蚀性能 |
Effect of Cerium Dioxide on the Structure and Wear-Resistance of Laser Cladding Ni-Based Cement Composite Coating |
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| WANG Xin-heng,KUANG Jian-xin,HE He-lin,ZHU Hang-sheng.Effect of Cerium Dioxide on the Structure and Wear-Resistance of Laser Cladding Ni-Based Cement Composite Coating[J].Journal of Materials Protection,2009,42(2). |
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| Authors: | WANG Xin-heng KUANG Jian-xin HE He-lin ZHU Hang-sheng |
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| Affiliation: | WANG Xin-heng1,KUANG Jian-xin1,HE He-lin1,ZHU Hang-sheng2(l.Department of Mechanical Engineering,Hu'nan Insti-tute of Technology,Xiangtan 411200,China,2.Products Divi-sion,Hengyang Fengshun Automdbile Axle Company Ltd.,Hengyang421002,China) |
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| Abstract: | A CO2 laser facility was performed to prepare Ni-based cement composite coatings with different content of CeO2 on the surface of AISI-1045 steel.The microhardness of the Ni-based ce-ment composite coatings was measured,and their microstructures and wear-resistance and corrosion-resistance were investigated.In particular,the effect of rare-earth oxide Ce02on the wear-resist-ance and corrosion-resistance and antioxidation ability of the com-posite coating was highlighted.Results showed that the introduction ... |
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| Keywords: | laser cladding composite coating rare-earth oxide Ni-based cement microhardness wear-resistance corrosion resistance |
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