YSZ纤维增强等离子喷涂Al<sub>2</sub>O<sub>3</sub>/8YSZ涂层耐磨性能研究

doi:10.11896/j.issn.1005-023X.2018.04.011

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Abstract The purpose of this work is to apply fiber toughening concept in the design of plasma spraying coatings to improve the fracture toughness, so as to solve the problem of the poor toughness of plasma spraying ceramic coatings. 4wt% and 8wt% yttria stabilized zirconia (YSZ) fibers reinforced Al₂O₃/8YSZ coatings were prepared by atmosphere plasma spraying method. The effect of fiber reinforced coatings on fracture toughness and wear resistance was studied. The results indicated that the phases of coatings were α-Al₂O₃, γ-Al₂O₃and t'. Fracture toughness of Al₂O₃/8YSZ coatings added with YSZ fibers were significantly improved, and the K_IC of coatings added with 8wt% YSZ fibers was 2.924 MPa·m^1/2. The addition of YSZ fibers has little influence on the micro-hardness of coatings. In the same wear condition, the wear loss of coatings added with YSZ fibers was greatly reduced, compared with the coatings without fibers. The wear resistance of coatings added with 8wt% YSZ fibers was 2.5 times of the coatings without fibers.

Key words： atmosphere plasma spraying Al₂O₃/8YSZ coatings fiber fracture toughness wear resistance

Published: 25 February 2018 Online: 2018-02-25

CLC number:

TG174.453

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	Articles by authors
	WANG Chang
	PANG Xuejia
	GAO Zonghong
	LIU Jinna
	FANG Yongchao
	CUI Xiufang
	LIU Erbao
	JIN Guo

Cite this article:

WANG Chang,PANG Xuejia,GAO Zonghong, et al. Wear Resistance of YSZ Fibers Reinforced Al₂O₃/8YSZ Coatings Prepared by Atmosphere Plasma Spraying[J]. Materials Reports, 2018, 32(4): 563-568.

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https://www.mater-rep.com/EN/10.11896/j.issn.1005-023X.2018.04.011 OR https://www.mater-rep.com/EN/Y2018/V32/I4/563

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