摘要
为了提高机动车尾气净化催化剂金属载体FeCrAlY材料与γ Al2O3活性层的结合力,通过铁系和低锌系磷化技术在FeCrAlY基体表面建立了磷化膜中间过渡层。提出了两种含稀土磷化体系的组成范围和工艺条件,介绍了用稀土化合物溶液对基体磷化前表调及磷化膜热处理的作用,并根据FeCrAlY材料的特性使用K3[Fe(CN)6]+NaCl溶液评价磷化膜质量。
In order to improve the binding strength of the active γAl2O3 coating on FeCrAlY material for the catalytic support in the automobile exhaust gas purifying system, an intermediate phosphatingfilm was prepared on FeCrAlY substrate by iron and lowzinc phosphating technology. The compositive range and technological conditions were recommended for two phosphating systems consisting of RE component. The adjustment of the substrate surface in the solution of RE compound before phosphating and the heat treatment of the phosphatingfilm were suggested too. The K3［Fe(CN)6］+NaCl solution was applied to the judgement of phosphatingfilm quality according to the characteristic of FeCrAlY material.
出处
《中国稀土学报》
CAS
CSCD
北大核心
2002年第z2期46-49,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金资助项目(29869001)
