High-temperature oxidation behavior of aluminide coatings on a new cobalt-base superalloy in air
High-temperature oxidation behavior of aluminide coatings on a new cobalt-base superalloy in air
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DOI：
10.1016/s0010-938x(00)00137-2
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发表时间：
2001-07-01
影响因子：
8.3
通讯作者：
Gu, SR
中科院分区：
文献类型：
--
作者：
Liu, PS;Liang, KM;Gu, SR
研究了低压气相沉积钴基高温合金DZ 40 M表面铝化物涂层的高温氧化行为。结果表明，涂层在900-1100 ℃空气中的等温氧化过程分为初始氧化、稳定氧化和加速氧化三个阶段。钛的加入加速了涂层的氧化和降解，使涂层的氧化阶段由稳定阶段提前到加速阶段。涂层在900 ℃和1000 ℃的低温下氧化增重，有θ-Al_2 O_3生成，而在1050 ℃的高温下氧化增重，只有α-Al_2 O_3生成。(C)2001爱思唯尔科技有限公司版权所有。
The high temperature oxidation behavior of aluminide coatings on the Co-base superalloy DZ40M by low-pressure vapor deposition has been investigated. The results showed that the isothermal oxidation process of the coatings in air at 900-1100 degreesC has three stages, including the initial, the stable and the accelerative. Adding Ti into aluminisor quickened the oxidation and degradation of the coating, and made the oxidation stage advance from the stable to the accelerative. The oxidation weight gains of coatings at lower temperatures of 900 and 1000 degreesC with theta -Al2O3 emerging were more than that at higher temperature of 1050 degreesC with only alpha -Al2O3 forming. (C) 2001 Elsevier Science Ltd. All rights reserved.