高温蒸汽环境下K444和K452合金及涂层的氧化行为

张超, 何闯, 夏凯, 郭亭山, 梁志远

Oxidation Behavior of K444 and K452 Alloys with and Without Thermal Barrier Coatings in High- temperature Steam Environment

ZHANG Chao, HE Chuang, XIA Kai, GUO Tingshan, LIANG Zhiyuan

表3 K444合金在氧化100、200和300 h后氧化产物表面点扫描结果 (mass fraction / %)

Table 3 Points in Fig.4 scanning results of corrosion surface of K444 alloy after 100, 200 and 300 h

Points Cr Ni Nb Mo Al Ti Co W 1 2.7 36.9 - - 0.1 38.2 0.1 2.7 2 2.1 38.4 - - 0.1 40.0 0.1 3.1 3 30.3 45.2 - 0.1 0.6 13.8 0.2 0.6 4 2.5 34.9 - 0.1 0.1 35.7 - 2.7 5 6.0 68.3 0.1 0.1 0.3 4.7 0.2 0.2 6 1.1 45.4 - - 0.1 21.8 - 0.4