添加Y2O3对激光熔覆原位合成TiB2和TiC增强镍基复合涂层组织的影响
Effect of Adding Y2O3 on Microstructure of TiB2 and TiC Reinforced Ni-Based Composite Coating In-Situ Synthesized by Laser Cladding
摘 要
在Ti6Al4V合金表面激光熔覆原位合成了TiB2和TiC颗粒增强镍基复合涂层, 通过X射线衍射仪、光学显微镜和扫描电镜以及能谱仪研究了添加2%(质量分数)Y2O3对涂层组织的影响。结果表明: 未添加Y2O3的涂层由增强相、少量如CrB和基体组织组成; 添加Y2O3后, 涂层中增强相TiB2的尺寸显著细化且有新相Ni3Y生成, CrB化合物数量减少, 涂层与基底形成冶金结合, 且界面更平整、致密, 成分过渡区有一定程度的缩小。
原位合成
复合涂层
组织
laser cladding
in-situ synthesis
composite coating
microstructure
Abstract
TiB2 and TiC particles reinforced Ni-based composite coatings were in-situ synthesized by laser cladding on Ti6Al4V alloy surface. The effect of adding 2wt% Y2O3 content on microstructure of the coating was studied by X-ray diffraction, optical microscopy, scanning electron microscopy and energy dispersive spectroscopy. The results show that the coating without Y2O3 consisted of reinforcement phases, a small quantity of CrB and the substrate. After adding Y2O3, the size of reinforcement phase TiB2 was refined greatly and and a new phase Ni3Y was found, and the number of CrB compound decreased. A metallurgical bonding was formed between the coating and substrate and the interface became smoother and more compact. The composition transition zone was reduced to a certain extent tecame.
中图分类号 TG178
所属栏目 试验研究
基金项目 国家自然科学基金资助项目(51002093); 上海市重点学科建设项目(J51402)
收稿日期 2011/7/10
修改稿日期 2011/3/7
网络出版日期
作者单位点击查看
备注张瑄珺(1987-), 女, 安徽池州人, 硕士研究生。
引用该论文: ZHANG Xuan-jun,LI Jun,WANG Hui-ping,LI Man-ping. Effect of Adding Y2O3 on Microstructure of TiB2 and TiC Reinforced Ni-Based Composite Coating In-Situ Synthesized by Laser Cladding[J]. Materials for mechancial engineering, 2012, 36(7): 17～20
张瑄珺,李军,王慧萍,李曼萍. 添加Y2O3对激光熔覆原位合成TiB2和TiC增强镍基复合涂层组织的影响[J]. 机械工程材料, 2012, 36(7): 17～20
被引情况:
【1】张光耀,王成磊,高原,韦文竹,陆小会,张焱,吴炜钦, "铝合金表面2%CeO2/Ni60A激光熔覆层的组织及耐腐蚀性能",机械工程材料 39, 69-72(2015)
【2】张哲豪,周后明,胡铁千,周友行,张高峰, "钕加入量对Cr12MoV模具钢表面激光熔覆镍基合金层组织和性能的影响",机械工程材料 40, 79-83(2016)
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参考文献
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