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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。
The microstructure of the laser cladding F102NiCrBSiC alloy powder coating obtained under the optimum conditions was studied by SEM, TEM and XRD. The results show that the microstructure of the coating zone is carbides, borides and Ni + Ni3B or Ni + M23C6 precipitated from the primary chrome boron compound + Ni-based dendritic solid solution + Ni dendrites. The microstructure of the coating zone is mainly composed of Ni + Ni3B and carbides and carbides Pseudo-multivariate eutectic cell crystal. Friction and wear tests show that the friction coefficient (0.21-0.3) of laser coating is much lower than that of steel substrate (0.65-0.8) and the wear rate is about one order of magnitude lower.