含钛镍基合金在850℃和950℃的热腐蚀行为Hot corrosion behavior of a Ni-base superalloy containing Ti in molten sulfate at 850 ℃ and 950 ℃
杨君宝,邱克强,卢旭东
摘要(Abstract):
研制了一种含钛镍基合金,并采用X射线衍射(XRD)、扫描电镜(SEM)及能谱(EDS)等手段研究了其在850℃和950℃熔融硫酸盐中的热腐蚀行为。结果表明,热腐蚀期间,合金发生了氧化、硫化现象,合金表面腐蚀产物层可分为3层,外氧化层以Al2O3、Cr2O3和Cr2O4相为主,中间层为Al2O3相,内层为CrS和Ti2S硫化物层;随腐蚀温度提高合金表面腐蚀层的厚度增加,合金内氧化物区域和内硫化物区域加深。
关键词(KeyWords): 镍基合金;热腐蚀;熔盐
基金项目(Foundation): 辽宁省博士科研启动基金(20141088)
作者(Author): 杨君宝,邱克强,卢旭东
DOI: 10.13289/j.issn.1009-6264.2015.10.035
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