新型金属-陶瓷覆层材料的研究  

STUDY ON THE CERMET-STEEL CLADDING MATERIAL

作　　者：董飞[1] 刘福田[2] 刘元新[1] 

机构地区：[1]中国建筑材料科学研究总院中国建筑材料检验认证中心,北京100024 [2]济南大学材料科学与工程学院,山东济南250022

出　　处：《中国陶瓷工业》2007年第3期20-24,共5页China Ceramic Industry

摘　　要：采用真空液相烧结技术,在钢基体表面制备三元硼化物硬质合金覆层,将三元硼化物硬质合金的优异性能赋予钢基体表面,获得耐磨抗蚀、界面结合强度高的新型硬质合金覆层材料。对三元硼化物硬质合金和钢基体的界面微观结构和界面区元素分布利用SEM-EDS进行分析,发现硬质合金覆层和钢基体之间形成了一个具有一定厚度的过渡层,合金元素浓度没有发生突变,两相之间形成了良好的冶金结合。并对覆层材料的显微硬度、抗弯强度与耐腐蚀性能做了研究,结果表明,硬质合金覆层材料具有较高的显微硬度、界面结合强度和优异的耐腐蚀性能。A Ternary boride hard alloy was prepared on the steel （Q235） substrate to form a new type of cladding material with excellent wear and corrosion resistance by in situ reaction and liquid phase sintering in vacuum fumace. The microstructure and elements distribution of the cladding-substrate bending interface area of the cladding material were studied by SEM-EDS. An interim layer with a certain width between the hard alloy cladding and steel substrate with good metallurgy coalescent between the two phases was formed, where the distribution of elements continuously changes. The microhardness, bending strength and corrosion resistance of the cladding material were studied. The experimental results indicated that a temary boride hard alloy cladding material has high microhardness, bond strength and excellent corrosion resistance.

关 键 词：三元硼化物硬质合金 覆层材料 性能 

分 类 号：TQ174[化学工程—陶瓷工业]