某燃气轮机燃烧室合金高温蒸汽氧化行为研究

梁志远, 张超, 曲劲宇, 何建元, 郭亭山, 徐一鸣

Oxidation Behavior in Air-steam Mixed Atmosphere at 1000oC of Four Typical High-temperature Alloys for Gas Turbine

LIANG Zhiyuan, ZHANG Chao, QU Jinyu, HE Jianyuan, GUO Tingshan, XU Yiming

表7 1000℃下主要合金元素氧化反应的平衡氧分压

Table 7 Equilibrium oxygen partial pressures for the oxidation reactions of Ni, Mn, Cr and Al at 1000 °C

No. Chemical reaction equation PO2 / MPa 1 2Ni+O2 (g)=2NiO 4.54 × 10-12 2 2Mn+O2(g)=2MnO 2.49 × 10-23 3 4/3Cr+O2 (g)=2/3Cr2O3 1.36 × 10-23 4 4/3Al+O2 (g)=2/3Al2O3 1.73 × 10-36