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纯铁为何不易生锈
更新时间: 2020-07-13 00:00:00  

常规化学腐蚀生成的氧化铁是致密的关于原电池反应。因为纯铁中没有杂质,不容易形成原电池而进行电化学腐蚀。而常规的化学腐蚀会生成致密的氧化铁薄膜,水汽和氧气无法接触铁,因而可以防止铁进一步氧化,和氧化铝保护膜差不多。

关键词: 为何 不易 生锈

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