Affiliation:
1. School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China
Abstract
High-temperature titanium alloys are widely used in aerospace hot parts; however, the thermal barrier temperature of 600 °C limits its service temperature. In this paper, a two-step hot-dip plating method is proposed to prepare the composite coating containing Ce on the surface of titanium alloy, which can make the oxidation resistance temperature of titanium alloy reach 800 °C The microstructure, phase composition, and element distribution of Ce-containing Ti-Al-Si hot-dip coating, Ce-containing Ti-Al-Si pre-oxidation coating and Ce-containing Ti-Al-Si high-temperature oxidation coating were studied. The results showed that the Ti-Al-Si hot-dip coating containing Ce was mainly composed of (Ti,Ce)(Al,Si)3 alloy phase layer, and the Ti-Al-Si pre-oxidation coating containing Ce was mainly composed of Ti-Al binary system phase layer and dense Al2O3 layer rich in CeO2. Ce in the high-temperature oxidation coating of Ti-Al-Si containing Ce was mainly distributed in Ti3Al, TiAl, TiAl3 + Ti5Si3 mixed phase layer and Al2O3. The addition of Ce could improve the uniformity of composite coating, prevent the spread of cracks, and improve the high-temperature oxidation resistance of Ti-Al-Si coating.
Funder
Science and Technology Project of the Education Department of Hunan Province
Hunan Provincial Natural Science Foundation of China
College Students’ Innovation and Entrepreneurship Training Program of Xiangtan University
Subject
Materials Chemistry,Surfaces, Coatings and Films,Surfaces and Interfaces
Reference39 articles.
1. High-strength titanium alloys for aerospace engineering applications: A review on melting-forging process;Zhao;Mater. Sci. Eng. A,2022
2. Classification and applications of titanium and its alloys;Pushp;Mater. Today,2022
3. Wang, Z.H., Li, F.G., Hu, X.Y., He, W., Liu, Z., and Tan, Y. (2022). Preparation of Ti-Al-Si Gradient Coating Based on Silicon Concentration Gradient and Added-Ce. Coatings, 12.
4. Transformation characteristics of temperature and phases within Ti-6Al-4V aeroengine drum in hot forging and air cooling procedures;Luo;J. Mater. Res. Technol.,2020
5. A design of self-generated Ti–Al–Si gradient coatings on Ti–6Al–4V alloy based on silicon concentration gradient;Hu;J. Alloys Compd.,2020
Cited by
2 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献