渗剂粒度和稀土元素对H13钢低温盐浴渗铬的影响  

Effects of solvent grain-size and rare-earth element on low temperature salt-bath chromizing process of H13 steel

作　　者：于小勇[1] 邹敢锋[1] 叶金玲[1] 

机构地区：[1]华南理工大学机械工程学院,广东广州510640

出　　处：《广东有色金属学报》2004年第1期64-66,共3页Journal of Guangdong Non-Ferrous Metals

摘　　要：采用金相法、X射线衍射法、电子探针能谱分析和显微硬度法,研究了渗剂粒度和稀土元素对H13钢低温盐浴渗铬速度和渗铬层质量的影响,研究发现,减小渗剂粒度,可以提高渗铬速度;在渗剂中加入稀土元素,不但可提高渗铬速度、使渗层均匀,而且使渗层的显微硬度和铬的质量分数都有所增加。The effects of different grain-size solvent and RE element on low temperature salt-bath chromizing process of H13 steel were studied by metallographic analysis, X-ray diffraction, electron probe energy spectrum analysis and microhardenss analysis. The results show that the two methods are effective to low temperature salt-bath chromizing process. If the solvent grain-size is decreased, the chromizing speed becomes high. If RE element is added to a chromizing solvent, the chromizing speed is raised, the chromizing layer turns uniform, and the microhardness and chromium concentration of chromizing layer is increased, respectively.

关 键 词：H13钢 低温盐浴渗铬 稀土 显微硬度 铬浓度 渗剂粒度 

分 类 号：TG161[金属学及工艺—热处理] TG142.45[金属学及工艺—金属学]