热浸镀铝层中的非晶态金属相  

Amorphous phase in hot dip aluminized layer of steel

作　　者：张伟[1] 范志康[1] 文九巴[2] 张智强[3] 郭献军[4] 

机构地区：[1]西安理工大学材料科学与工程学院,西安710048 [2]河南科技大学材料科学与工程学院,洛阳471003 [3]洛阳船舶材料研究所,洛阳471039 [4]洛阳理工学院材料工程系,洛阳471023

出　　处：《中国有色金属学报》2007年第7期1077-1082,共6页The Chinese Journal of Nonferrous Metals

基　　金：河南省重点攻关资助项目(0423023500);河南省自然科学基金资助项目(0511021600);洛阳市科技计划资助项目(040221)

摘　　要：采用SEM、TEM、XRD、EDS等手段研究热浸镀铝层的微观结构和成分。结果发现,镀铝层的表面层存在非晶态金属相。分别将热浸镀含稀土和不含稀土的铝液体急冷和缓冷后分析表明,镀铝后的铝-铁合金液在急冷过程中具有非晶形成能力;添加稀土后,非晶形成能力增加,即使在缓慢冷却条件下,组织中也有非晶态金属相形成。The microstructure and composition in hot dip aluminized layer of steel were investigated through scanning electron microscopy （SEM）, transmission electron microscopy （TEM）, X-ray diffractometry （XRD） and energy dispersive spectroscopy （EDS）. The amorphous phase is found in the outer layer of hot-dip aluminized layer. In order to clear the phenomenon, the Al-Fe alloy liquids used in hot dip aluminizing were quickly solidified and slowly solidified respectively. The results show that under quick solidification both Al-Fe alloy samples with or without La contain amorphous phase. While the Al-Fe alloy liquids are solidified slowly, the amorphous phase is only found in sample with La.

关 键 词：热浸镀铝 铝-铁合金液 稀土 非晶 

分 类 号：TG171[金属学及工艺—金属表面处理] TG113[金属学及工艺—金属学]