논문 해외 국제전문학술지(SCI급) Evaluation of growth kinetics of aluminide coating layers on Ti-6Al-4V alloys by pack cementation and the oxidation behaviours of the coated Ti-6Al-4V alloys
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2021-12
- 저자명 정중희, 이종원, 박준식, 박진수, 최광수, Jun Zhu, Fan Zhang
- 학술지명 International Journal of Refractory Metals and Hard Materials
- 발행처명 Elsevier
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 7
홈페이지논문 초록 (Abstract)
Ti-6Al-4V(Ti64) alloy has excellent mechanical properties and corrosion resistances, but poor oxidation properties at high temperatures. It is necessary to improve the oxidation resistances of the alloy in order to expand its application in the aerospace and automotive fields. This study aimed to improve oxidation resistances through diffusion coatings on the surface of the alloy. Aluminide coatings on Ti64 alloys have been investigated via pack aluminium process at temperature ranges of 400–800 °C. Al and/or TiAl3 layers were formed at the interface between the Ti64 alloy and the Al coating layer, when the Ti64 alloys were heat-treated at 400 and 500 °C. TiAl3 layer was manufactured on Ti64 alloys at 600, 700 and 800 °C. The growth of the coated TiAl3 layer followed diffusional growth manner, and the estimated value of the nucleation barrier was the lowest among the intermediate phases of the Ti-Al system. The …