Temperature effects on erosion behavior of metallization of carbon fiber reinforced plastics by cold spray technique

Abstract

Carbon fiber reinforced plastics (CFRPs) are widely used in the latest generations of aircraft, but their high erosion rate and low heat resistance is a concern for safe and long-term use. Thus, the metallization method of CFRP to form multi-material is preferable to enhance heat resistance and erosion resistance. The surface morphology of the cold-sprayed samples obtained at varied gas temperatures are shown in Fig. 1. Sn coatings were successfully deposited at gas temperatures of 473 and 523 K. The coating width widened, and the coating surface became dense as increased the gas temperature. By contrast, at 573 and 623 K, the CFRP substrate was severely eroded, and the surface erosion was more noticeable along the middle line of the cold-sprayed area. Epoxy decomposed in the fashion of fiber exposure. Intricately broken fibers and melted Sn clusters were inhomogeneously distributed. Therefore, surface erosion of CFRP becomes severe as increasing the gas temperature due to the impacting energy from particles and over-heated impinging gas.

Jiayu Sun

Ph.D

I am a Ph.D student with an interest in metallization CFRP composite materials, additive meanfacturing metal parts, and surface modification.