CN

陈克正

Professor

Supervisor of Doctorate Candidates

Supervisor of Master's Candidates

Date of Birth:1965-10-27

Team member

Paper Publications

Current position: Home > Scientific Research > Paper Publications

EDTA对AZ91D镁合金锡酸盐转化膜形貌与性能的影响

Release time:2021-03-15 Hits:

Key Words:镁合金;;EDTA;;锡酸盐转化膜;;耐腐蚀性能

Abstract:采用化学转化处理的方法,在AZ91D镁合金基体表面制备锡酸盐转化膜。重点研究了乙二胺四乙酸(EDTA)对转化膜形貌及相组成的影响。采用极化曲线及交流阻抗对转化膜的耐蚀性进行了测试。结果表明,锡酸盐转化膜由细小的球形颗粒堆积而成,在转化液中加入EDTA后获得的转化膜的致密性大幅度提高、裂纹数量明显减少,膜层平均厚度约为2~3μm,且与基体结合较好。膜层的主要成分为Mg Sn O3·3H2O晶体。加入EDTA后获得的转化膜的耐腐蚀性能较空白基体有明显的提高。

Volume:v.35

Issue:S2

Translation or Not:no

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