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超音速大气等离子喷涂TiB2-SiC涂层的抗氧化性及耐熔盐腐蚀性能
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1.中南大学 粉末冶金国家重点实验室,湖南 长沙 410083;2.广东省新材料研究所 现代材料表面工程技术国家工程实验室 广东省现代表面工程技术重点实验室,广东 广州 510650;3.云南云铝涌鑫铝业有限公司,云南 红河 663000

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基金项目:

Guangdong Academy of Sciences project(2018GDASCX-0402) and Yunnan Science and technology plan project(2018IC080) and The Natural Science Foundation of Hunan Province (No. 2018JJ2524).


Resistance Behavior to Oxidation and Molten Salt Corro-sion of Supersonic Atmospheric Plasma Sprayed TiB2-SiC Coating
Author:
Affiliation:

1.State Key Laboratory of Powder Metallurgy, Central South University, Changsha 410083, China;2.The Key Laboratory of Guangdong for Modern Surface Engineering Technology, National Engineering Laboratory for Modern Materials Surface Engineering Technology, Guangdong Institute of New Materials, Guangzhou 510650, China;3.Yunnan Yunlv Yongxin Aluminum Company Limited, Honghe 663000, China

Fund Project:

Guangdong Academy of Sciences Project (2018GDASCX-0402); Yunnan Science and Technology Plan Project (2018IC080); Natural Science Foundation of Hunan Province (2018JJ2524)

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    摘要:

    采用超音速大气等离子喷涂制备全包覆TiB2-SiC涂层,研究了TiB2-SiC涂层在400和800 ℃的氧化性能,并探究其氧化机理。对TiB2-SiC涂层在900 ℃下的抗铝熔盐腐蚀性能进行研究,并探讨其耐熔盐腐蚀机理。结果表明,超音速大气等离子喷涂制备的TiB2-SiC涂层具有良好的抗氧化性,在400 ℃的氧化速率常数为1.92×10-5 mg2·cm-4·s-1,在800 ℃的氧化速率常数为1.82×10-4 mg2·cm-4·s-1。超音速大气等离子喷涂制备的TiB2-SiC涂层在900 ℃下具有良好的抗熔盐腐蚀性能,熔盐腐蚀后TiB2-SiC涂层都保持致密结构,未发生涂层的开裂及剥落。

    Abstract:

    The fully-coated TiB2-SiC coating was prepared by supersonic atmospheric plasma spraying (SAPS). The oxidation performance of TiB2-SiC coating at 400 and 800 °C was studied and the oxidation mechanism was investigated. The corrosion resistance of TiB2-SiC coating to aluminum melting salt at 900 °C was studied, and the anti-corrosion mechanism of molten salt was discussed. The results show that the TiB2-SiC coating prepared by SAPS has good anti-oxidation performance. The oxidation rate constant at 400 °C is 1.92×10-5 mg2·cm-4·s-1, and that at 800 °C is 1.82×10-4 mg2·cm-4·s-1. The TiB2-SiC coating prepared by SAPS has good resistance to molten salt corrosion at 900 °C. TiB2-SiC coating maintains a dense structure after molten salt corrosion, and cracking and peeling of the coating do not occur.

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邹柯,邓春明,邹俭鹏,刘敏,刘学璋,赵瑞敏,李顺华,朱仁波,高迪.超音速大气等离子喷涂TiB2-SiC涂层的抗氧化性及耐熔盐腐蚀性能[J].稀有金属材料与工程,2021,50(8):2670~2677.[Zou Ke, Deng Chunming, Zou Jianpeng, Liu Min, Liu Xuezhang, Zhao Ruimin, Li Shunhua, Zhu Renbo, Gao Di. Resistance Behavior to Oxidation and Molten Salt Corro-sion of Supersonic Atmospheric Plasma Sprayed TiB2-SiC Coating[J]. Rare Metal Materials and Engineering,2021,50(8):2670~2677.]
DOI:10.12442/j. issn.1002-185X.20200510

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历史
  • 收稿日期:2020-07-15
  • 最后修改日期:2020-09-16
  • 录用日期:2020-10-15
  • 在线发布日期: 2021-09-07
  • 出版日期: 2021-08-31