本测试方法涵盖了涂层对基材的粘附程度(结合强度)的测定,或涂层在垂直于表面的张力下的粘接强度。该测试包括在基板夹具的一个面涂上涂层,将涂层粘接到加载夹具的表面,并使涂层和夹具的组合承受垂直于涂层平面的拉伸载荷。它特别适用于热喷涂涂层的测试,热喷涂涂层的定义包括燃烧火焰、等离子弧、双线弧、高速氧气燃料和用于喷涂原料的爆轰过程,原料可以是线材、棒材或粉末。热喷涂涂层材料包括陶瓷(如金属氧化物或碳化物)和金属。在某些情况下,涂层由不同的喷涂材料形成,例如将氧化层喷涂到喷涂的金属结合层上。基底通常是金属,但也可能是陶瓷,如氧化物或石墨。通常这种测试方法在环境温度下进行。较高的温度测试受限于需要合适的粘合剂粘结剂。对于某些基础研究,建议使用极低(低温)温度。本测试方法仅限于可用于厚度大于0.015英寸的热喷涂涂层的测试。 (0.38 mm). The limitation is imposed because an adhesive bonding agent is used in the test. Those bonding agents established so far for this method tend to penetrate thermal spray coatings and may invalidate results unless the coatings are thick enough to prevent penetration through the coating. Further development may establish that thin layers of certain types of especially dense coatings may be tested satisfactorily. Alternatively, new adhesive bonding agents that would allow reduction of the minimum thickness limitation may become available.