等离子喷涂Y2O3-Al2O3复合涂层制备及其力学性能

韩森^1,2，周宜飞^1,2，秦松^1,2，刘东华^1,2，杨佳霖^1,2，宋显志^1,2

1.湖南省冶金材料研究院有限公司

2.湖南省先进涂层工程技术研究中心

通信作者: 周宜飞（1997-），硕士，工程师，主要研究方向为先进涂层技术，E-mail：2468855205@qq.com

Fabrication and Mechanical Properties of Y₂O₃-Al₂O₃ Composite Coatings Prepared by Plasma Spraying

HAN Sen ^1,2, ZHOU Yifei ^1,2, QIN Song ^1,2, LIU Donghua ^1,2, YANG Jialin ^1,2, SONG Xianzhi ^1,2

1.Hunan Metallurgical Materials Research Institute Co., Ltd.

2.Hunan Advanced Coating Engineering Technology Research Center

Corresponding authors: ZHOU Yifei, Master, Engineer, Research Focus: Advanced Coating Technology, E-mail: 2468855205@qq.com

文章历史：收稿日期：2025-02-11

摘  要

通过等离子喷涂技术在Q235钢表面制备了不同氧化铝(Al2O3)摩尔比（62.5%和70%）的氧化钇-氧化铝（Y₂O₃-Al₂O₃）复合涂层，并研究了不同Al₂O₃含量对涂层微观结构与力学性能的影响。结果表明，当Al₂O₃摩尔比为70%时，制备的Y₂O₃-Al₂O₃复合涂层表现出致密的微观结构、低孔隙率（1.65%）和高的结合强度（53 MPa）。随着Al₂O₃含量的降低（摩尔比为62.5%），涂层的孔隙率增加（2.10%），结合强度显著降低（41 MPa）。综合分析实验结果得出，Al₂O₃摩尔比为70%的复合涂层展现出更优异的力学性能，Al₂O₃与Y₂O₃的比例对涂层力学性能具有显著调控作用，为优化Y₂O₃-Al₂O₃复合涂层的制备工艺提供理论依据。

Abstract

Yttrium oxide-alumina (Y₂O₃-Al₂O₃) composite coatings with different alumina (Al₂O₃) molar ratios (62.5% and 70%) were prepared on the surface of Q235 steel using plasma spraying technique, and the influence of Al₂O₃ content on the microstructure and mechanical properties of the coatings was investigated. The results show that the prepared Y₂O₃-Al₂O₃ composite coatings exhibited dense microstructure, low porosity (1.65%) and high bond strength (53 MPa) when the Al₂O₃ molar ratio was 70%. As the Al₂O₃ content decreased (molar ratio of 62.5%), the porosity of the coating increased (2.10%) and the bond strength decreased significantly (41 MPa). Comprehensive analysis of the experimental results conclude that the composite coating with a molar ratio of Al₂O₃ of 70% exhibited superior mechanical properties, and the ratio of Al₂O₃ to Y₂O₃ had a significant regulatory effect on the mechanical properties of the coatings, which provide a theoretical basis for the optimization of the preparation process of Y₂O₃-Al₂O₃ composite coatings.

关键词

等离子喷涂 ; Y₂O₃-Al₂O₃复合涂层 ; 微观结构 ; 力学性能

Keywords

plasma spraying ; Y₂O₃-Al₂O₃ composite coating ; microstructure ; mechanical properties

引用本文

韩森, 周宜飞, 秦松, 刘东华, 杨佳霖, 宋显志. 等离子喷涂Y₂O₃-Al₂O₃复合涂层制备及其力学性能[J]. 表面工程与再制造, 2025, 25(3): 53-59. https://doi.org/10.26935/j.issn.2097-5317.2025.0017

HAN Sen, ZHOU Yifei, QIN Song, LIU Donghua, YANG Jialin, SONG Xianzhi. Fabrication and Mechanical Properties of Y₂O₃-Al₂O₃ Composite Coatings Prepared by Plasma Spraying[J]. Surface Engineering & Remanufacturing, 2025, 25(3): 53-59. https://doi.org/10.26935/j.issn.2097-5317.2025.0017

中图分类号

TG174.4

基金项目

湖南省重点研发计划(2023GK2048)

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