Application of laser shock adhesion testing to the study of the interlamellar strength and coating–substrate adhesion in cold-sprayed copper coating of aluminum
Application of laser shock adhesion testing to the study of the interlamellar strength and coating–substrate adhesion in cold-sprayed copper coating of aluminum
复制标题
激光冲击附着力测试在铝冷喷铜层层间强度及镀层与基体附着力研究中的应用
DOI：
10.1016/j.surfcoat.2004.08.222
复制
发表时间：
2005
影响因子：
5.4
通讯作者：
M. Ducos
中科院分区：
文献类型：
--
作者：
S. Barradas;R. Molins;M. Jeandin;M. Arrigoni;M. Boustie;C. Bolis;L. Berthe;M. Ducos
与传统的热喷涂相比，冷喷涂应表现出特定的层间（即，在喷涂颗粒边界）性能和涂层-基材界面。这些特征是由于在低（“冷”）温度下结合高速度喷涂颗粒造成的，这导致喷涂涂层中的低氧化和有限的残余孔隙度。由于冷喷涂工艺的发展和研究的困难，人们对界面性能知之甚少，主要是层间强度和涂层-基体结合力。在这项研究中，激光冲击附着力测试，即LASAT，是适合于确定层间强度和涂层-基材的附着力。冷喷涂Cu/Al复合层的激光衍射表明，Cu-Cu层间强度与Cu-Al层-基结合强度在同一数量级。结果进行了讨论，在光的平行微观结构调查到Cu-Cu和Cu-Al界面。更一般地说，这项研究证明了LASAT作为测量附着力的有力工具的可行性，包括在局部区域。
Compared with conventional thermal spraying, cold spraying should exhibit specific interlamellar (i.e., at sprayed particle boundaries) properties and coating–substrate interface due to certain characteristics of this process. These characteristics result from the spraying of particles at a low (“cold”) temperature combined with a high velocity, which leads to a low oxidation and a limited residual porosity in the sprayed coating. Due to the fairly recent development of cold-spray processing and to investigation difficulty in this field, very little is known about interface properties, primarily interlamellar strength and coating–substrate adhesion. In this study, laser shock adhesion testing, namely, LASAT, was developed to be suitable for the determining of both the interlamellar strength and the coating–substrate adhesion. LASATesting of cold-sprayed Cu onto Al showed that Cu–Cu interlamellar strength was about of the same order as that of Cu–Al coating–substrate adhesion. Results are discussed in the light of a parallel microstructural investigation into Cu–Cu and Cu–Al interfaces. More generally, this study demonstrated the feasibility of the LASATesting as a powerful tool for the measuring of adhesion, including in local zones.