%0 Journal Article
%T THE ALKALINE FILM FORMING TECHNOLOGY OF RARE EARTH CONVERSION FILM ON ALUMINUM AND ITS ALLOY<br>铝合金稀土转化膜碱性成膜工艺T3/T7的研究
%A 李久青
%A 田虹
%A 卢翠英
%J 腐蚀科学与防护技术
%D 1998
%I 
%X The performance of conversion films containing rare earth element on aluminum and its alloys has been studied by linear polarization technique,polarization curve measuring,and neutral salt spray test.The test results revealed that: the uniform corrosion rate in sodium chloride solution was reduced by 10 to 20 times, the films passed 504 h salt spray test without damage, after the conversion treatment both of anodic and cathodic processes of aluminum alloys corrosion were greatly inhibited, the pitting potential was obviously moved in positive direction. This revealed that resistance to pitting corrosion in chloride medium was greatly improved after rare earth conversion treatment.The result of photoelectric current spectrum in open circuit voltage indicated that rare earth conversion film basiclly was an insulator besides ion could pass through surface dissolution and exchange of positions.
%K aluminum alloy
%K surface treatment
%K rare earth conversion film
%K corrosion resistance<br>铝合金
%K 表面处理
%K 稀土转化膜
%K 耐蚀性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=AB188D3B70B071C57EB64E395D864ECE&jid=9F6E6EC8BA5BB62698F6640073DDD6E1&aid=6C8E4EE0F3AC830E20FC71F00E3BDD09&yid=8CAA3A429E3EA654&vid=F3090AE9B60B7ED1&iid=0B39A22176CE99FB&sid=7C3A4C1EE6A45749&eid=BE33CC7147FEFCA4&journal_id=1002-6495&journal_name=腐蚀科学与防护技术&referenced_num=16&reference_num=4