富铝CMAS对稀土硅酸盐环境障涂层的腐蚀行为与机制研究

范栋, 钟鑫, 王亚文, 张振忠, 牛亚然, 李其连, 张乐, 郑学斌

Corrosion Behavior and Mechanism of Aluminum-rich CMAS on Rare-earth Silicate Environmental Barrier Coatings:

FAN Dong, ZHONG Xin, WANG Yawen, ZHANG Zhenzhong, NIU Yaran, LI Qilian, ZHANG Le, ZHENG Xuebin

表4 中标记区域的EDS元素组成

Table 4 EDS elemental compositions of the marked regions in Fig. 4

EDS/(%, in atom) Gd Y Er Si O Ca Al Mg Point 1 19.21 — —- 11.70 60.65 8.44 — — Point 2 1.16 — — 13.06 59.37 13.78 10.18 2.45 Point 3 — 15.29 — 16.00 61.82 6.89 — — Point 4 — 7.18 — 15.50 50.17 9.58 12.14 5.43 Point 5 — 0.96 — 13.56 59.62 13.03 10.40 2.42 Point 6 — — 20.27 12.11 61.12 6.50 — — Point 7 — — 8.70 10.95 59.15 8.09 10.95 4.65 Point 8 — — 0.92 3.29 58.74 19.61 3.29 2.07