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6 K452合金的涂层样品氧化100、200和300 h后氧化产物表面EDS元素分析结果 (mass fraction / %)

Table 6 EDS elements analysis results of corrosion surfaces of K452 alloy coated sample after oxidation for 100, 200 and 300 h in Fig.7

Points Zr Y Ni Co Cr Al Ti Fe Nb 1 57.6 3.9 - 0.1 0.3 0.3 - 0.2 3.0 2 60.3 3.8 - 0.2 0.1 0.2 - 0.2 2.4 3 61.8 4.1 - 0.1 0.1 0.2 0.1 0.1 2.2 4 48.7 3.8 0.1 0.8 1.0 0.2 - 0.8 2.0 5 59.6 3.5 0.2 0.2 0.2 0.2 - 0.3 2.3 6 57.4 3.6 0.7 1.7 2.4 0.2 0.1 0.4 2.3 7 58.4 3.9 - 0.3 0.5 0.2 - 0.1 2.6