Materials in 700 ℃ advanced ultra-supercritical coal-fired units

doi:10.11930/j.issn.1004-9649.2012.2.15.6

Abstract

Abstract: The present research and development status of advanced high-temperature materials in 700 ℃ advanced ultra-supercritical （A-USC） coal-fired units were introduced, as well as the welding, high-temperature coatings and cooling technology. The performance tests and selections on ferritic steel, austenitic steel and nickel-base alloy were carried out, and the new high-temperature materials were exploited in Europe, Japan and USA. Some research results have been achieved. The research on welding technology between nickel-base alloy and ferritic steel was developed in Europe and Japan. The welding technology of different alloy was researched in USA, and the welding procedure among different alloys was made. The research on high-temperature coatings and thermal barrier coating technology was implemented in USA and Europe. The thermal barrier coating technology will be used in turbine system of 700 ℃ A-USC coal-fired units. The technologies of steam cooling and sandwich structure for cooling were researched in Europe and Japan.

Key words: coal-fired power plant, A-USC, 700 ℃, high-temperature materials

CLC Number:

TG14

ZHANG Yan-ping，CAI Xiao-yan，HUANG Shu-hong. Materials in 700 ℃ advanced ultra-supercritical coal-fired units[J]. Electric Power, 2012, 45(2): 15-21.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2012.2.15.6

https://www.electricpower.com.cn/EN/Y2012/V45/I2/15

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