以蔗糖为前驱体制备TiC/Fe复合涂层  

Preparation of TiC/Fe composite coating by using sucrose as carbonaceous precursor

作　　者：王海涛[1] 张守全[1,2] 黄继华 朱警雷[1] 张华[1] 

机构地区：[1]北京科技大学材料科学与工程学院,北京100083 [2]厦门金鹭特种合金有限公司,厦门361006 [3]哈尔滨工业大学焊接国家重点实验室,哈尔滨150001

出　　处：《材料科学与工艺》2010年第1期11-14,共4页Materials Science and Technology

基　　金：哈尔滨工业大学现代焊接生产技术国家重点实验室开放课题资助项目;河南杰出人才创新基金资助项目(0421001000)

摘　　要：以TiFe粉和蔗糖为原料,通过蔗糖的热分解碳化制备Ti-Fe-C系反应热喷涂复合粉末,利用普通氧乙炔火焰喷涂成功制备出TiC/Fe复合涂层.采用XRD、SEM和TEM等对喷涂粉末和涂层的组织结构、涂层中的TiC颗粒进行了分析.研究结果表明:TiC/Fe复合涂层主要由TiC颗粒均匀分布于Fe基体中的复合强化片层构成,片层中TiC颗粒呈球形或近球形,粒径约为50nm;纳米级TiC颗粒增强的复合强化片层占涂层体积的60%以上.In this paper,TiC/Fe composite coatings were synthesized and deposited by reactive flame spray, using a kind of Ti-Fe-C composite powder prepared by carbonizing the mixture of ferrotitanium and sucrose as precursor. XRD,SEM and TEM were employed to analyze the microstructures of the composite powder and the coatings. It is showed that the composite coatings are mainly composed of composite layers,in which the TiC particles are dispersed within the Fe-alloy matrix,and TiC particles in these layers are spherical or nearspherical with the size of 50 nm or so. The volume content of composite layers in the coating is above 60% .

关 键 词：反应火焰喷涂 TiC/Fe复合涂层 纳米颗粒 前驱体 

分 类 号：TG146.4[一般工业技术—材料科学与工程]