Preparation and high temperature oxidation behaviors of (Al-Y)-dipped TiO2/Al2O3 composite coatings on the surface of Fe-Al alloy

4th International Conference on Applied Materials and Manufacturing Technology

材料科学;机械制造

Bai, Lingyun^1,2 ; Yang, Ganlan^1,2 ; Wang, Jun^1,2

Jiangxi Normal University of Science and Technology, Nanchang

330013, China^1

Jiangxi Key Laboratory of Materials Surface Engineering, Nanchang

330013, China^2

关键词: Cross-section morphology;    Fe;    al alloys;    High temperature oxidation Behavior;    Thick layers;    Weight gain;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/423/1/012086/pdf
DOI  :  10.1088/1757-899X/423/1/012086

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Sol-gel method combined with dipping process was used to prepare (Al-Y)-dipped TiO2/Al2O3 composite coatings on the surface of Fe-Al alloys. Oxidation thermodynamic results show the composite coatings caused lower oxidation weight gain than the sample without this coating. Combination of XRD and SEM results illustrates that the cross section morphology composed of an outermost layer of loosen Al and then a thick layer of Fe2O3, and a continuous Al2O3 innermost layer. This work shows that through appropriate designing of the composite coatings, better high temperature oxidation resistance alloy which can be prepared rapidly and simply can be obtained.