In previous studies at McGill University, tin has successfully been cold sprayed onto carbon fiber reinforced polymers (CFRPs) and, with the idea of improving the coating conductivity, other metal powders (aluminum, copper and zinc) were added to tin and also sprayed. Results indicated that addition of any of the aforementioned secondary components (SCs) provided a noticeable increase in deposition efficiency (DE); it was hypothesized that a tamping mechanism might explain the improvement. In this study, aluminum and several aluminum alloys (5083, 6061, 7075) were mixed with tin powders to understand how the hardness of secondary components with similar densities may affect the deposition of tin on CFRPs. The top-surface and cross section of the coatings were examined, and DE and coating thicknesses were measured. Profilometric data were acquired on some coating top surfaces, as well as directly on some substrates after coatings peeled off. Mixing tin with other metallic powders is discussed and a refined “crack filling” mechanism related to SC hardness is explored as an improvement mechanism in the cold spraying of mixed powders on CFRPs.

在麦吉尔大学的先前研究中，锡已成功地冷喷涂到碳纤维增强聚合物（CFRP）上，并且出于改善涂层导电性的想法，将其他金属粉末（铝，铜和锌）添加到锡中并进行了喷涂。结果表明，添加上述任何一种次要组分（SCs）均可显着提高沉积效率（DE）。据推测，捣固机制可能解释了这种改进。在这项研究中，将铝和几种铝合金（5083、6061、7075）与锡粉混合，以了解具有相似密度的次要成分的硬度如何影响CFRP上锡的沉积。检查涂层的顶表面和横截面，并测量DE和涂层厚度。在一些涂层顶面上以及在剥离涂层后直接在某些基材上获得轮廓测量数据。讨论了锡与其他金属粉末的混合，并探索了与SC硬度相关的精制“裂纹填充”机制，作为将混合粉末冷喷涂到CFRP上的一种改进机制。