| CeO2含量对激光熔覆Ni45A+TiC复合涂层组织和性能的影响 |
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| 引用本文： | 练国富,阙林志,曹强,曾嘉怡.CeO2含量对激光熔覆Ni45A+TiC复合涂层组织和性能的影响[J].表面技术,2023,52(11):448-456. |
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| 作者姓名： | 练国富 阙林志 曹强 曾嘉怡 |
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| 作者单位： | 福建理工大学 机械与汽车工程学院，福州 350118 |
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| 基金项目： | 福建省科技创新重点项目(2021G02009) |
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| 摘 要： | 目的提高模切刀具刃口层硬度和耐磨性，使刃口层内部组织无缺陷。方法以Ni45A-Ti C-Ce O2为熔覆材料，采用激光熔覆技术在AISI 1045钢表面制备不同含量稀土氧化物复合涂层。通过测试，分别研究不同含量Ce O2(质量分数0%～5%)对熔覆层物相组成、显微组织、显微硬度和耐磨性能的影响规律。结果添加Ce O2后，熔覆层的物相主要包括Ti C、Ni3Fe、Cr7C3、Cr23C6等，少量Ce O2的加入未改变熔覆层内主要相的生成，在Ce O2的质量分数为5%的条件下，在熔覆层中观测到Ce2O3相。当Ce O2的质量分数为2%时，Ni45A-Ti C-Ce O2复合涂层表面无渣、无裂纹、润湿角较小、宏观形貌最好，从表面到与基体结合处涂层的显微组织无枝晶，组织得到明显细化，Ti C...
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| 关 键 词： | 激光熔覆 Ni45A-TiC-CeO2复合涂层 稀土氧化物 CeO2 微观组织 |
| 收稿时间： | 2022/8/29 0:00:00 |
| 修稿时间： | 2023/3/13 0:00:00 |
Effect of CeO2 Content on Microstructure and Properties of Ni45A+TiC Composite Coatings by Laser Cladding |
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| LIAN Guo-fu,QUE Lin-zhi,CAO Qiang,ZENG Jia-yi.Effect of CeO2 Content on Microstructure and Properties of Ni45A+TiC Composite Coatings by Laser Cladding[J].Surface Technology,2023,52(11):448-456. |
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| Authors: | LIAN Guo-fu QUE Lin-zhi CAO Qiang ZENG Jia-yi |
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| Affiliation: | School of Mechanical and Automotive Engineering, Fujian University of Technology, Fuzhou 350118, China |
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| Abstract: | The tool edge layer needs to have high hardness and wear resistance while the internal organization of the edge is required to be free of defects such as pores and cracks. However, due to the rapid heating and cooling rates in the laser cladding process, there are large thermal and phase change stresses in the cladding layer, and there are differences in physical and chemical properties between the enhanced phase and the base material, which can lead to defects such as coarse grains, pores and cracks in the cladding layer, thus the application of laser cladding technology in tool edge manufacturing is severely limited. |
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| Keywords: | laser cladding Ni45A-TiC-CeO2 composite coating rare-earth-oxides CeO2 microstructure |
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