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浪~顽石

金虫 (小有名气)


[求助] 金属的大阴极,小阳极腐蚀为啥比较严重??

在金属的腐蚀中,为啥出现大阴极,小阳极腐蚀时比较严重??
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铁虫 (正式写手)

【答案】应助回帖

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浪~顽石: 金币+2, ★★★★★最佳答案 2013-06-09 20:04:59
看看电化学原理。金属的腐蚀与电流密度呈正比,在大阴极小阳极的情况下,阳极电流密度特别高,自然腐蚀也最严重,点蚀、缝隙腐蚀的机理都是如此。
2楼2013-05-16 19:28:51
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