钼合金涂层在1200℃下的氧化行为  

Oxidation behavior of molybdenum alloy coatings at 1200℃

作　　者：周红灯 张玉玲 夏春林 田青超 ZHOU Hongdeng;ZHANG Yuling;XIA Chunlin;TIAN Qingchao(State Key Laboratory of Advanced Special Steel,Shanghai University,Shanghai 200444,China;Avic Guizhou Anda Aviation Forging Co.,Ltd.,Anshun 561005,China)

机构地区：[1]上海大学省部共建高品质特殊钢冶金与制备国家重点实验室,上海200444 [2]贵州安大航空锻造有限责任公司,安顺561005

出　　处：《粉末冶金技术》2025年第1期123-133,共11页Powder Metallurgy Technology

摘　　要：采用涂覆法在TZC钼合金表面制备了三种不同涂层A涂层、B涂层、C涂层。A涂层含有硼硅酸盐玻璃,B涂层在A涂层的基础上掺杂质量分数为15%的MoSi_(2)粉,C涂层在B涂层的基础上添加少量的Al粉。使用加热炉、X射线衍射分析仪及扫描电镜等研究了涂层在1200℃的氧化行为。结果表明,C涂层在高温氧化1 h内具有良好的保护能力,在氧化2 h的抗氧化性能较无涂层保护的情况下提高69%。在高温氧化后,A涂层及B涂层的截面形貌主要以MoO_(3)和TiO_(2)交替分布的疏松的组织为主。而铝粉的添加改变了氧化膜的物相组成,C涂层形成外层铝硅酸盐,中层铈钛氧化物,内层TiO_(2)和钼硅化合物的三层结构,使其具有优良的抗氧化效果。Three different coatings A,B and C were prepared on TZC molybdenum alloy surface by coating method.The A coating contains borosilicate glass,the B coating dopes MoSi_(2) powder with A mass fraction of 15%on the basis of the A coating,and the C coating adds a small amount of Al powder on the basis of the B coating.The oxidation behavior of the coatings at 1200℃was studied by heating furnace,X-ray diffraction analyzer and scanning electron microscope.The results show that the C coating has a good protection performance within 1 h of high temperature oxidation,and the oxidation resistance of the C coating after 2 hours is 69%higher than that without coating protection.After high temperature oxidation,the cross-section morphology of A coating and B coating is dominated by the loose structure of MoO_(3) and TiO_(2) alternately distributed.The addition of aluminum powder changes the phase composition of the oxide film,and the C coating forms a three-layer structure of the outer aluminosilicate,the middle cerium titanium oxide,the inner TiO_(2) and molybdenum silicon compound,which makes it have excellent oxidation resistance.

关 键 词：钼基合金 TZC 抗氧化 涂层 硅化物 

分 类 号：TG178[金属学及工艺—金属表面处理] TF123[金属学及工艺—金属学]