前言喷涂层和基体的结合强度是评价喷涂层质量的一项重要指标。因此,如何提高涂层的结合强度,是热喷涂工作者普遍关心的问题。在热喷涂工艺过程中,人们通常首先在基体上喷涂一层Ni/Al复合粉末做为结合层,然后在Ni/Al结合层上面喷涂工作层。这种喷涂结构有效地改善了工作涂层与基体之间的结合性能,但同时也增加了喷涂工艺过程的复杂性,使喷涂层的质量控制更加困难。为此,美国 Preface The bonding strength of the sprayed coating to the substrate is an important indicator of the quality of the sprayed coating. Therefore, how to improve the bonding strength of the coating is a common concern of thermal spray workers. In the thermal spraying process, people usually spray the substrate with Ni / Al composite powder as the bonding layer and then spray the working layer on the Ni / Al bonding layer. The spray structure effectively improves the bonding between the working coating and the substrate, but also increases the complexity of the spraying process and makes it more difficult to control the quality of the spray coating. To this end, the United States