用金相显微镜,X射线衍射(XRD),扫描电镜(SEM),透射电镜(TEM)和X射线能谱(EDS)对等离子弧堆焊Co-Cr-W系多元合金层进行了研究,结果表明,合金层基体为具有(200)晶面择优取向的Co基固溶体,Co基固溶体中存在许多堆垛层错;与固溶体组成共晶体的碳化物主要为具有六方点阵并含有层片状孪晶的(Cr, Fe)7C3.
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