超临界水环境中汽轮机阀门材料氧化特性研究

王芬玲, 尚丽梅, 张乃强, 朱忠亮

Oxidation Behavior of Valve Materials Used in Steam Turbine in Supercritical Water Environment

WANG Fenling, SHANG Limei, ZHANG Naiqiang, ZHU Zhongliang

表3 渗氮F91钢经不同温度和不同时间氧化后表面氧化膜厚度 (μm)

Table 3 Thicknesses of oxide scales formed on nitrided F91 steel during oxidation in SCW under the different conditions of temperature and time

Nitrited F91 steel 600 ℃-100 h 600 ℃-1000 h 600 ℃-3000 h 620 ℃-100 h 620 ℃-1000 h 620 ℃-3000 h Outer layer 13.9 39.2 62.9 19.2 48.9 62.5 Inner layer 21.3 47.6 50.0 26.4 51.2 59.2 Total thickness 35.2 86.8 112.9 45.6 100.1 121.5