Preparation, microstructure evolution, and crystallization behavior of eutectic YAG/Al2O3 ceramic coating deposited by atmospheric plasma spraying

IF 5.3 2区材料科学 Q1 MATERIALS SCIENCE, COATINGS & FILMS Surface & Coatings Technology Pub Date : 2024-11-23 DOI:10.1016/j.surfcoat.2024.131571

Jie Li , Cuihong Li , Yang Cui , Tiefeng Du , Zhixin Luo , Cui Zhou , Haoyu Wang , Luchao Sun , Jingyang Wang

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引用次数: 0

Abstract

In this study, eutectic Y₃Al₅O₁₂/Al₂O₃ coatings with alternating YAG and Al₂O₃ phases are successfully prepared using atmospheric plasma spray (APS) technique. Through subjecting the coatings to heat treatments within temperatures ranging from 1000 °C to 1500 °C, it becomes possible to tailor the microstructures of the coatings, including phase distribution, porosity level, grain sizes, and interphase spacing. Furthermore, an investigation into the crystallization behavior of YAG and Al₂O₃ phases, as well as the formation mechanism of eutectic-like microstructure in YAG/Al₂O₃ coatings, reveals that YAG phases undergo primary crystallization from the amorphous phase, followed by secondary crystallization of Al₂O₃ phases between YAG crystals. This work provides insights into understanding the relationship between heat treatment temperatures and coating morphologies, as well as elucidates the formation mechanism of eutectic-like microstructure, thereby guiding the controlled preparation of YAG/Al₂O₃ coatings via APS technique.

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来源期刊

Surface & Coatings Technology 工程技术-材料科学：膜

CiteScore

10.00

自引率

11.10%

发文量

921

审稿时长

19 days

期刊介绍： Surface and Coatings Technology is an international archival journal publishing scientific papers on significant developments in surface and interface engineering to modify and improve the surface properties of materials for protection in demanding contact conditions or aggressive environments, or for enhanced functional performance. Contributions range from original scientific articles concerned with fundamental and applied aspects of research or direct applications of metallic, inorganic, organic and composite coatings, to invited reviews of current technology in specific areas. Papers submitted to this journal are expected to be in line with the following aspects in processes, and properties/performance: A. Processes: Physical and chemical vapour deposition techniques, thermal and plasma spraying, surface modification by directed energy techniques such as ion, electron and laser beams, thermo-chemical treatment, wet chemical and electrochemical processes such as plating, sol-gel coating, anodization, plasma electrolytic oxidation, etc., but excluding painting. B. Properties/performance: friction performance, wear resistance (e.g., abrasion, erosion, fretting, etc), corrosion and oxidation resistance, thermal protection, diffusion resistance, hydrophilicity/hydrophobicity, and properties relevant to smart materials behaviour and enhanced multifunctional performance for environmental, energy and medical applications, but excluding device aspects.