Ni-Cr-Fe高温泡沫合金的制备及抗氧化性能研究  

Research on Preparation and Oxidation Resistance of Ni-Cr-Fe Superalloy Foams Alloy

作　　者：吉国强[1] 叶小机 梁慧[1] 庞秋[2] 

机构地区：[1]中国广州分析测试中心广东省化学危害应急检测技术重点实验室,广东广州510070 [2]武汉东湖学院,湖北武汉430212

出　　处：《热加工工艺》2017年第22期56-60,共5页Hot Working Technology

基　　金：2014年武汉东湖学院校级青年基金项目(2014B01010-8016)

摘　　要：采用固体粉末法及高温固相扩散工艺制备了三维网状Ni-Cr-Fe高温泡沫合金。利用扫描电镜、能谱仪和X射线衍射仪分析了Ni-Cr-Fe高温泡沫合金的微观组织、元素分布和相分布。研究了Ni-Cr-Fe高温泡沫合金在800~1000℃的抗氧化性能及机理。结果表明:Ni-Cr-Fe高温泡沫合金在800、900℃下表现出良好的抗氧化性;在1000℃时,Cr_2O_3保护膜起皱和破裂,导致泡沫合金的抗氧化性能降低。The 3D reticulated Ni-Cr-Fe superalloy foams alloy was synthesized by solid powder methed and high temperature solid phase diffusion process. The microstructure, element distribution and phase distribution of Ni-Cr-Fe superalloy foams alloy were analyzed by SEM, EDS and XRD. The oxidation-resistance properties and mechanism of Ni-Cr-Fe superalloy foams alloy from 800℃ to 1000℃ were studied. The results show that the the superalloy foams alloy shows excellent oxidation- resistance at 800℃ and 900℃, but at 1000℃, the Cr2O3 protection layer wrinkles and ruptures, which can result in the decrease of oxidation-resistance of the superalloy foams alloy.

关 键 词：高温泡沫合金 均匀化 高温氧化 

分 类 号：TG146.15[一般工业技术—材料科学与工程] TB34[金属学及工艺—金属材料]