Cr12MoV冷作模具钢渗铬层界面能谱分析  

Energy spectrum analysis of chromized coating interface for Cr12MoV cold working die steel

作　　者：张垒[1] 孔德军[1] 

机构地区：[1]常州大学机械工程学院,江苏常州213164

出　　处：《中南大学学报（自然科学版）》2016年第2期430-435,共6页Journal of Central South University:Science and Technology

基　　金：江苏省科技支撑计划项目(BE2014818)~~

摘　　要：采用粉末法对Cr12MoV冷作模具钢进行渗铬处理,通过SEM,XRD和EDS等手段对渗铬层表面-界面形貌、物相组成和化学元素线能谱、面能谱扫描进行分析,探讨渗铬层组织结构和元素变化。研究结果表明:渗铬层由沉积层和扩散层构成,Cr和C原子在沉积层相互结合,形成铬碳化物Cr_(23)C_6相,在一定程度上抑制Cr原子的扩散和O原子的侵蚀;扩散层内Cr和Fe原子相互渗透,形成Fe-Cr固溶体相。The surface of Cr12MoV cold working die steel was chromized with powder method, the surface-interface morphologies, phase components and line scan and plane scan of chromized interface were analyzed with SEM, EDS and XRD respectively, and the changes of structure and elements of chromized layer were discussed. The results show that the chromized layer is composed of sediment and diffusion layers, of which the atoms of Cr and C are combined mutually to form chromium carbide phase of Cr（23）C6, preventing the diffusion of Cr and the erosion of O to a certain degree. The elements of Cr and Fe are diffused into each other in the diffusion layer to form the solid solution phase of Fe-Cr.

关 键 词：CR12MOV钢 渗铬处理 线能谱 面能谱 

分 类 号：TG156.88[金属学及工艺—热处理] O657.62[金属学及工艺—金属学]