The Future of Alumina-Forming Alloys: Challenges and Applications for Power Generation

被引：15
|
作者：
Pint, Bruce A. [1 ]
机构：
[1] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37831 USA
来源：
HIGH-TEMPERATURE OXIDATION AND CORROSION 2010 | 2011年 / 696卷
关键词：
Alumina-forming alloys; reactive elements; water vapor; CO2; CYCLIC OXIDATION RESISTANCE; HIGH-TEMPERATURE OXIDATION; WATER-VAPOR; THERMAL-EXPANSION; BARRIER; SEGREGATION; COATINGS; LIFETIME; BEHAVIOR; SCALE;
D O I：
10.4028/www.scientific.net/MSF.696.57
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Alumina-forming alloys have been studied for over 50 years and are now needed for high efficiency power generation applications operating at higher temperatures. Especially in the presence of water vapor, alumina-forming alloys outperform conventional chromia-forming alloys above 1000 degrees C. However, alloy mechanical behavior is a significant issue and alumina-forming alloy development has been limited. The opportunity for alloy development is discussed as well as the factors that limit oxidation resistance, including alloy thermal expansion and optimizing reactive element additions. Finally, lifetime modeling is discussed for thick section components together with the need to address performance in more complex environments.
引用
收藏
页码：57 / 62
页数：6
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