Tribological behaviors of D-gun sprayed CrFeNiAl0.3Ti0.3-Al-(HfMoNbTaTi)C high entropy wear-resistant coating over wide temperature
Year: 2025
Type: article
Abstract: In this study, CrFeNiAl0.3Ti0.3-10 wt.% Al- x (HfMoNbTaTi)C (x=10, 20 wt. %) high-entropy wear-resistant coatings were fabricated using the detonation spray equipment. Aluminum was chosen as a binder to enhance the deposition efficiency and performance of the coatings. These coatings displayed a simple phase composition of FCC, BCC, Al, (HfMoNbTaTi)C and B2 phase. The (HfMoNbTaTi)C particles provided reinforcement through a second phase, strong pinning effect and precipitation hardening via the B2 phase, resulting in high hardness and wear resistance. When the (HfMoNbTaTi)C content was 20 wt.%, the coating exhibited a hardness of 841 HV and a bond strength of 58 MPa. Furthermore, the wear rates of this composite coating at 25 ℃, 400 ℃, and 800 ℃ are reduced by factors of 5.29, 1.48 and 0.68, respectively, compared to the plain CrFeNiAl0.3Ti0.3 coating.
Language: English
Topic: High Entropy Alloys Studies
Subfield: Mechanical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,640
OpenAlex ID: W4407794130