Effect of Pre-Oxidation on the Steam Oxidation of Heat-Resistant Steel T92

被引：9
|
作者：
Xu Hong [2 ]
Liang Zhiyuan [1 ]
Ding Jianliang [2 ]
Zhao Qinxin [1 ]
Guan Shipian [2 ]
机构：
[1] Xi An Jiao Tong Univ, Sch Energy & Power Engn, MOE, Key Lab Thermal Fluid Sci & Engn, Xian 710049, Shaanxi, Peoples R China
[2] Jiangsu Frontier Elect Technol Co Ltd, Nanjing 211102, Jiangsu, Peoples R China
来源：
HIGH TEMPERATURE MATERIALS AND PROCESSES | 2018年 / 37卷 / 08期
基金：
中国国家自然科学基金;
关键词：
steam oxidation; surface modification; pre-oxidation; T92; steel; POWER-PLANTS; WATER-VAPOR; BEHAVIOR; ALLOYS;
D O I：
10.1515/htmp-2017-0037
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effect of pre-oxidation on the steam oxidation of T92 heat-resistant steel at 650 degrees C was investigated. The results show that the mass gain and the oxide thickness of T92 sample with pre-oxidation treatment were lower than that of T92 sample after exposure in steam at 650 degrees C. The compact and discrete Cr-rich oxide which formed on the pre-oxidized specimen hindered ion diffusion, leading to the lower oxidation rate. The effect of pre-oxidation worked at the initial stage due to the protective Cr-rich layer formed in air gas. After a long time exposure in steam, the pre-oxidation influence decreased slowly and eventually disappeared. What's more, the adhesion property of oxide scale was improved by pre-oxidation.
引用
收藏
页码：733 / 739
页数：7
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