【摘要】 采用真空钎焊工艺，将ＷＣ－Ｃｏ硬质合金粉和ＮｉＣｒＢＳｉ（ＡＷＳＢＮｉ－２）合金粉钎焊到４５＃钢表面，得到（ＷＣ－Ｃｏ／ＮｉＣｒＢＳｉ）钎焊涂层。不同钎焊工艺下，涂层及涂层／基体的拉伸强度分别达１００—１４０ＭＰａ和３００－３６０ＭＰａ。初步分析了钎焊涂层结合机制。涂层的磨料磨损性能远高于同配比的火焰堆焊涂层及Ｃｏ－Ｃｒ－Ｗ堆焊层更多还原

【Abstract】 A(Wc Co/NiCrBSi)brazing coating was made on 45# steel through vacuum brazing technology. The tensile strength of the coating and coating/matrix approaches to 100-140MPa and 300-360MPa,respectively, at different brazing parameters. Bonding mechanism of the coating is analyzed. The abrasive resistance of (WC Co/NiCrBSi) brazing coating is better than Co Cr W overlaying nad (WC 17Co/NiCrBSi) flame overlaying.更多还原