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5 K444合金涂层样品在氧化100、200和300 h后氧化产物表面EDS元素分析结果 (mass fraction / %)

Table 5 EDS elements analysis results of corrosion surfaces of K444 alloy with coatings after oxidation for 100, 200 and 300 h in Fig.6

Points Zr Y Ni Co Cr Al Ti Hf 1 60.1 5.2 - 0.1 - 0.1 0.1 1.6 2 63.1 6.0 0.1 0.2 - 0.1 0.1 1.2 3 56.9 5.1 0.1 - 0.1 0.2 0.1 1.4 4 60.4 5.4 0.2 0.1 0.1 0.1 0.1 1.5