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CeO2含量对激光熔覆TiB/TiN涂层显微组织和性能的影响

Effect of CeO2 Content on Microstructures and Properties of TiB/TiN Coating by Laser Cladding

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摘要

在Ti和h-BN粉末中添加不同含量的CeO2作为原料, 采用激光熔覆技术在Ti3Al2V表面原位合成TiB/TiN复合陶瓷强化涂层。通过测试分别研究了不同含量的CeO2对熔覆层的强化相微观组织形貌、显微硬度和摩擦磨损性能的影响。结果表明, 熔覆层原位合成了TiB和TiN强化相; 通过添加适量的CeO2, 熔覆层中的强化相变得更加细小, 组织分布更加均匀, 硬度和摩擦磨损性能得到提高。CeO2加入量的质量分数为2%时, 熔覆层的表层硬度可达1400 HV, 耐磨损性能最佳。

Abstract

The TiN/TiB-reinforced titanium matrix composite coatings are prepared on the surface of Ti3Al2V by laser cladding using different CeO2 contents in Ti and h-BN powders as the raw materials. The effects of different CeO2 contents on the strengthening phase microstructure morphology, microhardness and wear property of the laser cladding coating are studied and characterized. The results indicate that the cladding layers of TiB and TiN matrix composite is in-situ synthesized. The addition of appropriate CeO2 refines the structure of the reinforced phase, enhances the microstructural uniformity and improves the microhardness and wear property of coating. When the mass fraction of CeO2 is 2%, the surface hardness of the coatings is up to 1400 HV, and the wear property of coating is optimum.

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中图分类号:TG146.2

DOI:10.3788/cjl201744.1202009

所属栏目:激光制造

基金项目:上海市重大技术装备研制专项(ZB-ZBYZ-03-11-0485)

收稿日期:2017-07-20

修改稿日期:2017-08-26

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作者单位    点击查看

刘頔:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240
李敏:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240上海电力学院能源与机械工程学院, 上海 200090
黄坚:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240高新船舶与深海开发装备协同创新中心, 上海 200240
陈何阳:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240
孙瑞田:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240
李铸国:上海交通大学上海市激光制造与材料改性重点实验室, 上海 200240

联系人作者:黄坚(jhuang@sjtu.edu.cn)

备注:刘頔(1992-), 女, 硕士研究生, 主要从事激光熔覆方面的研究。E-mail: liudi128@163.com

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引用该论文

Liu Di,Li Min,Huang Jian,Chen Heyang,Sun Ruitian,Li Zhuguo. Effect of CeO2 Content on Microstructures and Properties of TiB/TiN Coating by Laser Cladding[J]. Chinese Journal of Lasers, 2017, 44(12): 1202009

刘頔,李敏,黄坚,陈何阳,孙瑞田,李铸国. CeO2含量对激光熔覆TiB/TiN涂层显微组织和性能的影响[J]. 中国激光, 2017, 44(12): 1202009

被引情况

【1】刘亚楠,孙荣禄,张天刚,李眉葭. CeO2含量对激光熔覆自润滑涂层微观组织和性能的影响. 激光与光电子学进展, 2018, 55(11): 111401--1

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