SiC(Cu)/Fe复合材料制备工艺研究  

Study on the Preparation of SiC(Cu)/Fe Composites

作　　者：邵刚[1] 王海龙[1] 秦丹丹[1] 刘瑞瑜[1] 范冰冰[1] 张锐[1] 

机构地区：[1]郑州大学材料科学与工程学院,河南郑州450002

出　　处：《稀有金属材料与工程》2007年第A01期856-858,共3页Rare Metal Materials and Engineering

摘　　要：采用非均相沉淀法制得Cu包裹SiC复合粉体,利用粉末冶金和常压烧结制备SiC(Cu)/Fe复合材料。利用Zeta电位仪、XRD,EDS以及SEM等手段对包裹粉体和烧结样品进行了分析。结果表明,采用非均相沉淀法可以得到Cu/SiC复合粉体。包裹后的粉体与原始SiC粉体的表面电位不同,达到了对SiC颗粒表面改性的目的。Cu作为过渡层改善了SiC/Fe的界面相容性,在1050℃烧结的样品只有微量的FeSi或Fe2Si生成,界面反应得到有效控制,获得化学结合的界面,温度过低不能烧结致密,温度过高出现大量缺陷。Cu-coated-SiC composite powders were prepared by heterogeneous deposition method, the composite were mixed with Fe powder by ball milling, and then SiC（Cu）/Fe composites were obtained by means of powder metallurgy and conventional sintering. The coated powers and sintered compacts were analyzed by Zeta potential instrument, XRD, EDS and SEM. The results indicate that Cu/SiC composite powder can be obtained by heterogeneous deposition method. The difference of Zeta potential between coated powders and original particles shows that it was achievable to modify the surface performance of SiC particles by heterogeneous deposition method. The stability of SiC/Fe system was improved by the formation of Cu transition layer. Interface reaction of the samples sintered at 1050℃ was controlled effectively because only trace amount of FeSi and Fe2Si generated. Compact samples can not be got at too low temperature and a large number defects will appear due to the agglomeration of SiC at too high temperature.

关 键 词：SiC/Fe复合材料 包裹 常压烧结 界面结合 

分 类 号：TB333[一般工业技术—材料科学与工程]