摘要
运用ＳＥＭ，ＴＥＭ及ＸＲＤ研究了优化工艺条件下获得的激光熔覆Ｆ１０２ＮｉＣｒＢＳｉＣ合金粉末涂层的微观组织。结果表明，涂层区组织为初生铬硼化合物＋Ｎｉ基胞枝状固溶体＋Ｎｉ枝晶间析出的碳化物、硼化物和Ｎｉ＋Ｎｉ３Ｂ或Ｎｉ＋Ｍ２３Ｃ６；结合区组织为以Ｎｉ＋Ｎｉ３Ｂ为主及碳化物和碳硼化物构成的伪多元共晶胞状晶。摩擦磨损试验表明，激光涂层的摩擦系数（０．２１～０．３）比钢基底（０．６５～０．８）低得多，磨损速率约低一个数量级。
Microstructures and friction and wear properties of laserclad NiCrBSiC alloy on steel AISI1045 were investigated with SEM, TEM, XRD and a pinring friction and wear testing machine. The coating obtained under optimal process condition posseses two distinct zones, i.e. clad layer(CL) and bonding zone (BZ). The friction coefficient of the coating (0.2～0.3) is much lower than that of the substrate(0.65～0.8). The wear rate of the clad is approximately an order lower than that of the substrate.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
1998年第2期201-205,共5页
The Chinese Journal of Nonferrous Metals
基金
金属精密热加工国防科技重点实验室资助
关键词
激光熔覆
NI基合金
微观组织
摩擦磨损
laser cladding Nibased alloy microstructure friction and wear
