低温等离子渗硼层形成条件的探讨  

Study on formation conditions for low temperature plasma assisted boronizing layer

作　　者：王庆芳[1] 吴晓春[1] 

机构地区：[1]上海大学材料科学与工程学院,上海200072

出　　处：《金属热处理》2009年第1期63-66,共4页Heat Treatment of Metals

基　　金：国家博士点专项科研基金(2006028006)

摘　　要：对纳米化处理后的热作模具钢H13和低碳钢在600℃分别进行4h、6h、8h的等离子渗硼处理。采用X射线衍射分析(XRD)和扫描电子显微分析(SEM),分别对试样的表面相组成和截面变形层硼化物形貌进行了探讨。结果表明,600℃离子渗硼过程中形成铁硼化合物的气压临界值约为400Pa,渗硼时间越长越有利于硼化物层的形成,但硼化物的生成率越来越低。Hot work steel H13 after nano-treated and low carbon steel were treated with plasma assisted boronization at 600 ℃ for 4h ,6h and 8h. The surface phase structure and morphology of cross-section borides were investigated with XRD and SEM. The results show that at 600℃, the critical pressure of horides is about 400 Pa, the longer boronizing time the more favorite to the formation of horides, hut the lower production rate of borides.

关 键 词：热作模具钢H13 低碳钢 等离子热处理 渗硼 纳米化 

分 类 号：TG156.8[金属学及工艺—热处理]