Liberati Andre C, Che Hanqing, Aghasibeig Maniya, Yu Kintak Raymond, Vo Phuong, Yue Stephen
McGill University, Montreal, Canada.
National Research Council Canada, Boucherville, Canada.
J Therm Spray Technol. 2022;31(1-2):159-175. doi: 10.1007/s11666-022-01323-1. Epub 2022 Feb 2.
In previous studies at McGill University, tin was successfully cold sprayed onto carbon fiber reinforced polymers (CFRPs). A "crack-filling" mechanism was described as the deposition mechanism that allowed deposition of tin onto the CFRP. Improving the coating conductivity for lightning strike protection (LSP) purposes was explored by adding other metal powders (aluminum, copper, zinc) to tin and cold spraying on the CFRP. At the same time, it was noticed that the addition of this secondary component (SC) provided an increase in deposition efficiency (DE); tamping was initially hypothesized to explain this improvement, thus prompting a study solely on the effect of SC hardness. However, it is recognized that other powder characteristics may also be influencing the DE. Thus, in this study, SCs with a wider variety of particle sizes, morphologies, densities and hardness values were mixed with tin and sprayed on CFRPs. The effect of SC properties on tin deposition is discussed and, while SC particle size, morphology and density individually do not notably influence the DE, the impact energy of the SC does. This opens a discussion on optimal parameters for deposition of metals on CFRP, based on results and observations from the literature.
在麦吉尔大学之前的研究中，锡已成功冷喷涂到碳纤维增强聚合物（CFRP）上。一种“填缝”机制被描述为使锡能够沉积到CFRP上的沉积机制。通过向锡中添加其他金属粉末（铝、铜、锌）并在CFRP上进行冷喷涂，探索了提高涂层导电性以用于雷击防护（LSP）的目的。同时，人们注意到添加这种次要成分（SC）提高了沉积效率（DE）；最初假设夯实作用可以解释这种提高，因此促使开展一项仅研究SC硬度影响的研究。然而，人们认识到其他粉末特性也可能影响DE。因此，在本研究中，将具有更广泛粒径、形态、密度和硬度值的SCs与锡混合并喷涂在CFRP上。讨论了SC特性对锡沉积的影响，虽然SC的粒径、形态和密度单独对DE没有显著影响，但SC的冲击能量有影响。基于文献中的结果和观察，这开启了关于在CFRP上沉积金属的最佳参数的讨论。
