冷轧钢板热浸镀铝层剥落的研究
Research on Flaking of Coating on Cold-rolled Steel Plate During Hot Dip Aluminizing
杜 安1, 石 坚1, 曹晓明1, 吕佳昕2
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作者单位:(1. 河北工业大学 材料学院, 天津 300130; 2. 天津市工大镀锌设备有限公司, 天津 300402)
中文关键字:热浸镀铝; 镀层形貌; 过渡层成分; 剥落
英文关键字:hot dip aluminizing; coating morphology; composition of the boundary; flaking
中文摘要:借助附带能谱分析(EDS)的扫描电镜(SEM)研究了冷轧钢板热浸镀铝过程中的镀层剥落问题,发现镀铝钢板过渡层由靠近基体的Fe2Al5相和靠近纯铝层的FeAl3相组成。对镀层剥落后的表面进行X-射线检测,得出镀层剥落发生在FeAl3与纯铝层接触区域,剥落是由脆性相FeAl3引起的。
英文摘要:The flaking of coating on cold-rolled steel plate during hot dip aluminizing was studied by scanning electron microscopy / energy spectrum analysis, and the flaked surface was examined by XRD. The results show that the intermediate layer is composed of Fe2Al5 and FeAl3. The flaking is promoted by fragile FeAl3 and occurs at the edge of FeAl3 and aluminum.