Ti6Al4V合金表面激光重熔Ni60B+TiN喷涂层的组织与性能  

Study on laser remelting Ni60B + TiN spray coating on the surface Ti6Al4V

作　　者：刘荣祥[1] 雷廷权[1] 郭立新[1] 

机构地区：[1]哈尔滨工业大学材料科学与工程学院

出　　处：《黑龙江科技学院学报》2004年第1期1-5,共5页Journal of Heilongjiang Institute of Science and Technology

摘　　要：为解决钛及钛合金的耐磨性能,在Ti6Al4V表面进行激光重熔MiCrBSi+TiN合金喷涂层的试验,利用XRD和SEM对熔覆层进行了分析,测试了显微硬度和涂层的耐磨性能。结果表明:通过优化工艺参数可获得连续的、均匀的、无裂纹和气孔的熔覆层,熔覆层主要由γ-Ni、TiN、NiB、Cr2Ti和Ti2Ni组成,在结合区热影响区的界面有大约4～5μm的扩散层,熔覆层的平均硬度达1076～1355HV,稀释区为800HV。The laser remelting Ni60B+TiN spray coating on the surface of T16A14V is measured. Use of SEM and XRD, microstructure is observed and microhardness is detected. The experimental results show that the continuous, homogeneous, poroless and crackless clad coating can be rendered possible by optimizing the technical parameter. The coating is composed of phases γ- Ni, TiN, NiB, Cr2Ti and Ti2Ni, respectively. The thickness of transition zone existing between the dilution zone (DZ) and the heat-affected zone (HAZ) is approximately 4-5μm. The microhardness of clad coating is 1 076-1355HV, and the dilution zone is 800 HV.

关 键 词：涂层 激光重熔 钛合金 显微组织 

分 类 号：TG174.445[金属学及工艺—金属表面处理]