激光熔覆原位合成TiC的Ni/TiC复合层显微组织与性能研究  

Microstructure and properties of Ni/TiC composite coating prepared with laser clad TiC

作　　者：侯丹辉[1] 王耀民 刘喜明[1] 李希波 

机构地区：[1]长春工业大学材料表面工程研究所,吉林长春130012 [2]吉林省激光工程中心,吉林长春130012 [3]长春市质量技术监督局稽查分局,吉林长春130012

出　　处：《长春工业大学学报》2008年第2期121-124,共4页Journal of Changchun University of Technology

基　　金：吉林省杰出青年基金资助项目(20030331)

摘　　要：利用5 kWCO2激光器和同轴送粉的方法,在Q235钢基材表面原位合成强化相为TiC的Ni/TiC复合材料层。研究了不同Ni相对含量对熔覆层的显微组织形貌和相组成的影响,并进行了耐磨性试验。结果表明,熔覆层的物相构成为Ni和TiC,熔覆层耐磨性随Ni相对含量的减少而增大。By means of 5 kW CO2 and on-axis powdery provision, Ni/TiC composite with stronger TiC is in-situ prepared on Q235 steel substrate. The influences of different Ni relative content to both the appearances and phase composition of the microstructure in the cladding layers are studied, and the anti-abrasion experiments are carried. The results show that the microstructure of Ni/TiC coating is consisted of Ni/TiC and Ni, the anti-abrasion ability will decrease with the reduce of Ni/TiC relative contents.

关 键 词：激光熔覆 Ni/TiC 微观组织 耐磨性 

分 类 号：TG665[金属学及工艺—金属切削加工及机床]