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采用４种典型的ＷＣ系硬质合金粉末与Ｗ－Ｎｉ复合粉末研究了粉末结构、粘结相的成分与含量以及超音速火焰喷涂（ＨＶＯＦ）条件对涂层结合强度的影响。结果表明：对于具有高熔点的ＷＣ及Ｗ颗粒构成的复合粉末ＨＶＯＦ涂层的结合强度大于粘结胶的强度（约６５ＭＰａ）几乎不受粉末结构和粘结相成分的影响。试验表明：喷涂粒子具备液固两相结构是ＨＶＯＦ涂层获得高结合强度的必要条件，而ＷＣ与Ｗ的高密度是保证ＨＶＯＦ涂层高结合强度的充分条件。
The effects of powder structure, composition and content of the binder phase and the HVOF conditions on the bonding strength of the coatings were investigated by using four typical WC series cemented carbide powders and W-Ni composite powders. The results show that the bonding strength of composite powder HVOF coating composed of WC and W particles with high melting point is stronger than that of adhesive (about 65MPa), and is hardly affected by the powder structure and the binder phase composition. The experimental results show that the sprayed particles with liquid-solid two-phase structure are the necessary conditions for HVOF coating to obtain high bonding strength. However, the high density of WC and W is the sufficient condition to ensure the high bonding strength of HVOF coating.