Al_2O_3/Fe表面复合材料的燃烧合成及组织分析  

Fabrication of Al_2O_3/Fe Surface Composites by Combustion Synthesis Technique and Its Microstructure Analysis

作　　者：金华峰[1] 

机构地区：[1]安康学院化学化工系,陕西安康725000

出　　处：《热加工工艺》2009年第14期76-78,共3页Hot Working Technology

基　　金：陕西省教育厅自然科学专项基金项目资助(05JK135)

摘　　要：用燃烧合成法制备了Al2O3/Fe管状表面复合材料;利用金相显微镜、X射线衍射仪、电子探针等对涂层的形貌、相组成、元素分布等进行了观测和分析。结果表明,相组成主要为α-Al2O3、尖晶石相(FeO.Al2O3)、YAG相(Y3Al5O12)及少量的莫来石相(3Al2O3.2SiO2)和α-Fe相。过渡层的存在使涂层与基体之间匹配应力较小,结合强度高;加入Y2O3使材料的致密度得到了提高。Al2O3/Fe surface composites were formed on steel pipe by combustion synthesis. The micrographs, phase composition and redistribution of elements were observed and investigated by means of microscope, X-ray diffraction and EMPA. The results show that the coating consists of α-Al2O3, FeO· Al2O3, Y3Al5O12 and a little 3Al2O3·2SiO2, α-Fe. The transition layer of coating and matrix is beneficial to to the bonding strength.

关 键 词：表面复合材料 燃烧合成 组织分析 

分 类 号：TB333[一般工业技术—材料科学与工程]