纳米TiN增强导卫板铸渗层的组织研究  

Investigation on Microstructure of Cast Layer in Guide Plate Strengthened by Nanometer TiN

作　　者：谢敬佩[1] 郭正[2] 邵星海[1] 王文焱[1] 李炎[1] 

机构地区：[1]河南科技大学材料科学与工程学院,河南洛阳471003 [2]中原工学院纺织学院,河南郑州450007

出　　处：《河南科技大学学报（自然科学版）》2012年第5期1-3,8,共4页Journal of Henan University of Science And Technology:Natural Science

基　　金：河南省国际科技合作基金项目(084300510006);河南科技大学博士科研基金项目(2008bs025)

摘　　要：通过铸渗工艺在导卫板ZG35表面制备出纳米TiN高铬铸铁铸渗层,并借助扫描电镜、X射线衍射仪和透射电镜等方法研究了加入不同含量纳米TiN对铸渗层显微组织的影响。研究结果表明:铸渗层由奥氏体基体和(Cr,Fe)7C3碳化物组成,纳米TiN弥散分布于奥氏体基体中,能够细化组织并促进碳化物由紧凑的网状分布向不连续的网状分布转变。With the traditional cast penetrating technology,high cast chromium iron composite layer was formed on the surface of the guide plate ZG35.The microstructure of the cast layer with different contents of the nanometer TiN was researched by means of SEM,XRD and TEM.The results show that the cast layer is composed of the austenite matrix and(Cr,Fe)7C3.The nanometer TiN particle is distributed in the matrix dispersedly.When the nanometer TiN particle is added into the alloy,the as-cast microstructure is obviously refined,and the(Cr,Fe)7C3 of reticular structure can be inhibited or eliminated effectively.

关 键 词：导卫板 铸渗层 纳米TiN 微观组织 

分 类 号：TB36[一般工业技术—材料科学与工程]