Effect of sand blasting and glass matrix composite coating on oxidation resistance of a nickel-based superalloy at 1000 °C
Effect of sand blasting and glass matrix composite coating on oxidation resistance of a nickel-based superalloy at 1000 °C
复制标题
DOI：
10.1016/j.corsci.2013.04.022
复制
发表时间：
2013-08-01
影响因子：
8.3
通讯作者：
Wang, Xiaolan
中科院分区：
文献类型：
--
作者：
Chen, Minghui;Shen, Mingli;Wang, Xiaolan
研究了机械抛光或喷砂处理后涂覆玻璃基复合涂层的K38G高温合金在1000℃下的氧化行为。结果表明，喷砂预处理通过促进氧化铝中间层的形成，增强了高温合金玻璃涂层的抗氧化和抗剥落能力。从喷砂不仅改变了合金的微观结构，而且通过影响高温合金基体与玻璃涂层之间界面反应的进行，改变了表面的合金成分这一角度讨论了有利于形成氧化铝中间层的最重要因素。(C) 2013 Elsevier Ltd.版权所有。
The oxidation behavior of K38G superalloy, which is mechanically polished or sand blasted and then coated with glass matrix composite coatings, is investigated at 1000 degrees C. Results indicate that sand blasting pre-treatment enhances the resistance to oxidation and spallation of the glass coatings on superalloys by promoting formation of an alumina interlayer. The most important factors favoring formation of this alumina interlayer are discussed in terms of that sand blasting not only changes the microstructure of alloy, it also modifies the alloy composition at surface by affecting the progressing of interfacial reactions between the superalloy substrates and glass coatings. (C) 2013 Elsevier Ltd. All rights reserved.