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铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

Vol. 12    No. 4    August 2002

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High-temperature protective coatings on
 superalloys
LIU Pei-sheng(刘培生)1,2,3, LIANG Kai-ming(梁开明)2
ZHOU Hong-yu(周宏余)1,3

1. Key Laboratory of Beam Technology and Material Modification of
Education Ministry, Department of Materials Science and Engineering,
Beijing Normal University, Beijing 100875, China; 
2. Department of Materials Science and Engineering, Tsinghua University, 
Beijing 100084, China;
3. Material Physical and Chemical Division, Beijing Radiation Center,
 Beijing 100875, China

Abstract:Protective coatings are essential for superalloys to serve as blades of gas turbines at high temperatures, and they primarily include aluminide coating, MCrAlY overlay coating, thermal barrier coating and microcrystalline coating. In this paper, all these high-temperature coatings are reviewed as well as their preparing techniques. Based on the most application and the main failure way, the importance is then presented for further deepgoing study on the high-temperature oxidation law of aluminide coatings.

 

Key words: high-temperature coating; casting; superallo y; oxidation

ISSN 1672-7029
CN 43-1423/U

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