张光耀,王成磊,高原.稀土 CeO2 含量对 Al 合金激光熔覆层组织形貌的影响[J].表面技术,2015,44(4):1-5.
ZHANG Guang-yao,WANG Cheng-lei,GAO Yuan.Effect of Rare Earth CeO2 Contents on the Tissue Morphology of Laser Cladding on Al Alloy Layers[J].Surface Technology,2015,44(4):1-5
稀土 CeO2 含量对 Al 合金激光熔覆层组织形貌的影响
Effect of Rare Earth CeO2 Contents on the Tissue Morphology of Laser Cladding on Al Alloy Layers
投稿时间:2014-10-28  修订日期:2015-04-20
DOI:10.16490/j.cnki.issn.1001-3660.2015.04.001
中文关键词:  稀土  激光熔覆    铝合金
英文关键词:rare earth  laser cladding  nickel  aluminum alloy
基金项目:国家自然科学基金项目(51201043,51264007)
作者单位
张光耀 桂林电子科技大学 材料科学与工程学院, 广西 桂林 541004 
王成磊 1. 桂林电子科技大学 材料科学与工程学院, 广西 桂林 541004;2. 桂林电子科技大学 机械工程学院, 广西 桂林 541004 
高原 桂林电子科技大学 材料科学与工程学院, 广西 桂林 541004 
AuthorInstitution
ZHANG Guang-yao School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China 
WANG Cheng-lei 1. School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China;2. School of Mechanical Engineering, Guilin University of Electronic Technology, Guilin 541004, China 
GAO Yuan School of Materials Science and Engineering, Guilin University of Electronic Technology, Guilin 541004, China 
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中文摘要:
      目的 研究稀土氧化物 CeO2 的含量对铝合金表面 Ni 基激光熔覆层组织形貌的影响,降低 Ni60熔覆层的气孔、开裂等组织缺陷。 方法 采用激光熔覆技术,在 6063Al 表面制备 CeO2 含量不同的 Ni60熔覆层,对熔覆层的表面形貌、截面形貌及微观组织进行对比分析。 结果 CeO2 质量分数低于 3% 时,难以获得表面良好的熔覆层,0% ~2% 时易出现裂纹;CeO2 质量分数在 4% ~ 5% 的熔覆层形貌最好,无明显气孔和裂纹,尤其 4% 时具有相对较好的截面形貌;CeO2 质量分数在 5% ~ 10% 的熔覆层主要缺陷为气孔,且气孔、脱落等缺陷较少。 结论 添加 CeO2 可以改善铝合金表面 Ni60 熔覆层的组织形貌,尤其 4%的 CeO2 可以改善 Ni60 熔覆层的组织结构,促进熔覆层的晶粒细化和组织分布均匀,是较佳的添加量。
英文摘要:
      Objective To study the effect of rare earth oxide CeO2 contents on the tissue morphology of aluminum surface Ni-based laser cladding layers, and to lower the porosity, cracking and other tissue defects of Ni60 cladding layer. Methods Ni-Based alloy coatings with different contents of rare-earth CeO2 were prepared on the surface of 6063 aluminum alloy using laser cladding, and the surface morphology, the cross section morphology and microstructure of the cladding layer were analyzed. Results It was difficult to obtain a good cladding layer when the CeO2 content was less than 3% , the cladding layers were prone to cracking at 0% to 2% CeO2 content. Cladding layers with 4% ~ 5% CeO2-Ni60 had the best morphology without pores and cracks, especially addition of 4% CeO2 led to relatively good cross-section morphology. The main defects were pores when the CeO2 content was 5% to 10% , but there were less porosity, loss and other defects. Conclusion Addition of CeO2 could improve the aluminum surface morphology in Ni60 cladding layers, especially addition of 4% CeO2 could improve the organizational structure of Ni60 cladding layers, and promote the grain refinement and even distribution of the structure. Therefore, the preferred addition amount of rare earth CeO2 was 4% .
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