Acta Metall Sin  1993, Vol. 29 Issue (8): 72-76    DOI:

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STRUCTURAL CHANGE OF PLASMA SPRAYED ZrO_2 COATING AFTER LASER REMELTING

CHEN Hancun;LIU Zhengyi;ZHUANG Yuzhi South China University of Technology; Guangzhoudoctoral Department of Mechanical Engineering No.2; South China University of Technology;Guangzhou 510641

CHEN Hancun;LIU Zhengyi;ZHUANG Yuzhi South China University of Technology; Guangzhoudoctoral Department of Mechanical Engineering No.2; South China University of Technology;Guangzhou 510641. STRUCTURAL CHANGE OF PLASMA SPRAYED ZrO_2 COATING AFTER LASER REMELTING. Acta Metall Sin, 1993, 29(8): 72-76.

Abstract References Related Articles Recommended Metrics Download:  PDF(1183KB)  Export:  BibTeX | EndNote (RIS)       Abstract  An improvement on the properties of plasma sprayed ZrO_2 ceramic coatingby laser remelting treatment has been observed by TEM, SEM, EPMA and X-ray diffractionanalysis. After laser remelting, the ZrO_2 coating changes its structure into more dense andnonporous, and more stable to thermal failure and cracking if a suitable SiO_2 doped. Thebonding of laser remelted ZrO2 ceramic coating together with adhesion layer is found to be ofmetallurgical nature. The thickness of adhesion layer and metallurgical bonding interface maybe evidently increased. With the increase of the laser output, the ceramic coating, adhesionlayer and a certain depth of substrate surface are able to be fused. A liquid Zr6Fe3o phase maybe formed between ceramic coating and adhesion layer. Key words:  plasma spraying      ZrO_2 coating      laser remelting      SiO_2      Received:  18 August 1993      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1993/V29/I8/72 1 陈汉存,刘正义,庄育智,关侃.材料科学进展,1992;6:146 2 Chen Hancun, Liu Zhengyi, Zhuang Yuzhi, Xu Linkang. Chin J Mech Eng, 1992; 5(3) : 183 3 Sivakumar R, Mordike B L. Surf Eng. 1988; 4: 127 4 Galasso F S, Veltri R. Ceram Bull, 1983; 62: 253 5 Zaplatynsky I. Thin Solid Films, 1982: 95: 275 6 Adamski A, McPherson R. In: Welding Institute of Canada ed., Advances in Thermal Spraying, Proc. 11th Int. Thermal Spraying Conf, Montreal, Canada, Sept. 8--12, 1986: 555, Canade: Pergamon Press 7 Iwamoto N, Umesaki N, Endo S. In: Welding Institute of Canada ed., Advances in Thermal Spraying, Proc. 11th Int. 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