稀土元素对40Cr钢渗铝层组织性能的影响研究  

Effect of RE Elements on the Microstructure and Properties of Aluminizing Layer of 40Cr Steel

作　　者：纪文文[1] 宋月鹏[1,2] 陈克丰[1] 冯媛媛[1] 

机构地区：[1]山东农业大学机械与电子工程学院,山东泰安271018 [2]中国科学院理化技术研究所,北京100190

出　　处：《稀土》2009年第6期55-59,共5页Chinese Rare Earths

基　　金：中国博士后科学基金资助(20070420540);山东农业大学青年创新基金项目资助(68340)

摘　　要：研究了稀土含量对40Cr钢渗铝过程中催渗效果的影响,表明渗剂中添加稀土的最佳含量为4%,结合成分检测结果,提出了稀土催渗的渗铝模型。进一步研究发现,与渗铝层相比,稀土催渗渗铝层更为致密,过渡区与基体结合紧密,且显微硬度提高2倍左右,并对其机理进行了研究分析。The effect of RE content on the aluminizing process of 40Cr steel was studied.It has concluded that the optimal concentration of rare earth elements added in the aluminizing powder is 4% in forming a compact layer with best performance.A model of accelerated aluminizing by RE elements,based on EDS analysis,was proposed.Compared with the aluminizing without RE,addition of RE in the processing makes the layer more compact and adherent to the substrate with hardness 2 times higher than the former,and its mechanism was interpreted.

关 键 词：稀土催渗渗铝 40CR钢 组织 性能 渗铝层 

分 类 号：O614.33[理学—无机化学]