TY - JOUR
T1 - Adhesion mechanism of cold-sprayed Sn coatings on carbon fiber reinforced plastics
AU - Sun, Jiayu
AU - Yamanaka, Kenta
AU - Zhou, Shaoyun
AU - Saito, Hiroki
AU - Ichikawa, Yuji
AU - Ogawa, Kazuhiro
AU - Chiba, Akihiko
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2022/3/30
Y1 - 2022/3/30
N2 - Metallization of carbon fiber reinforced plastics (CFRPs) has been explored to improve the electrical and thermal conductivities for avoiding thermal degradation and preventing lightning strikes on aircraft. In our recent study, Sn was successfully deposited on a thermosetting-based CFRP using cold spraying. Therefore, this study investigated the adhesion mechanism of the cold-sprayed Sn coatings on the CFRPs prepared at different gas temperatures (473 and 523 K). Herein, pull-off tests were conducted on the specimens deposited at 473 and 523 K, and the obtained results implied that the adhesion strength for the specimen deposited at 523 K was higher. In addition, cross-sectional and superficial observations were carried out after the pull-off test. The obtained results suggest that the chemical reactions between the Sn coating and CFRP substrate hardly occurred during cold spraying. Therefore, mechanical interlocking was considered as the primary mechanism of adhesion. The surface of the CFRP substrate degraded owing to the impacts of stronger particles at higher gas temperatures, representing complex interfacial morphologies that comprise exposed carbon fibers. The resultant rougher surfaces could enhance the mechanical interlocking at the Sn/CFRP interface, thereby improving the adhesion strength.
AB - Metallization of carbon fiber reinforced plastics (CFRPs) has been explored to improve the electrical and thermal conductivities for avoiding thermal degradation and preventing lightning strikes on aircraft. In our recent study, Sn was successfully deposited on a thermosetting-based CFRP using cold spraying. Therefore, this study investigated the adhesion mechanism of the cold-sprayed Sn coatings on the CFRPs prepared at different gas temperatures (473 and 523 K). Herein, pull-off tests were conducted on the specimens deposited at 473 and 523 K, and the obtained results implied that the adhesion strength for the specimen deposited at 523 K was higher. In addition, cross-sectional and superficial observations were carried out after the pull-off test. The obtained results suggest that the chemical reactions between the Sn coating and CFRP substrate hardly occurred during cold spraying. Therefore, mechanical interlocking was considered as the primary mechanism of adhesion. The surface of the CFRP substrate degraded owing to the impacts of stronger particles at higher gas temperatures, representing complex interfacial morphologies that comprise exposed carbon fibers. The resultant rougher surfaces could enhance the mechanical interlocking at the Sn/CFRP interface, thereby improving the adhesion strength.
KW - Adhesion mechanism
KW - Carbon fiber reinforced plastic
KW - Coating
KW - Cold spray
KW - Metallization
KW - Tin
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UR - http://www.scopus.com/inward/citedby.url?scp=85121934353&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2021.151873
DO - 10.1016/j.apsusc.2021.151873
M3 - Article
AN - SCOPUS:85121934353
SN - 0169-4332
VL - 579
JO - Applied Surface Science
JF - Applied Surface Science
M1 - 151873
ER -