基于点蚀试验的7B04铝合金材料点蚀密度研究  

Research of 7B04 Aluminum Alloys Pitting Corrosion Density Based on Pitting Corrosion Test

作　　者：刘治国[1] 韩玉[1] 朱武峰 吕航 

机构地区：[1]海军航空工程学院青岛校区,青岛266041

出　　处：《环境技术》2017年第4期8-11,共4页Environmental Technology

摘　　要：点蚀是航空铝合金材料在服役环境下常见的损伤形式,点蚀的产生极其密度的变化通常会影响铝合金疲劳性能,为此,本文通过开展铝合金点蚀试验的方式,对其点蚀过程中的蚀坑密度变化规律进行建模研究,研究发现,铝合金点蚀过程中蚀坑密度在腐蚀前期随腐蚀周期增加,腐蚀后期,蚀坑密度趋于饱和而稳定;滴入溶液方式较浸入溶液方式的点蚀发展较快。Pitting corrosion is a typical damage of aircraft aluminum alloys structure under the service environment, and the corrosion pit density can affect the fatigue property. So, the pitting corrosion test of aero aluminum alloy was carried out to obtain the corrosion pit density variation law during the pitting corrosion test process. The research found that the corrosion pit density increased with the corrosion period during the earlier corrosion stage, and tended to stable at the later corrosion dripping solution is faster

关 键 词：航空铝合金 点蚀 蚀坑密度 建模 

分 类 号：TG174[金属学及工艺—金属表面处理]