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你知道影响硫酸腐蚀氟塑料磁力泵的内外因素么
浏览次数:248发布日期:2019-10-16

  你知道影响硫酸腐蚀氟塑料磁力泵的内外因素么

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  介质pH值的影响。介质中酸的含量增加,pH值降低时将会导致介质的腐蚀电位增加,从而加剧金属的腐蚀速度,但铝在酸性介质中随着pH值的降低其腐蚀速度也降低,因此在合金中若加入铝时则会增加合金的耐腐蚀性能。

  氧及氧化剂对腐蚀速度的影响。氧化剂介质浓度的增加会加速金属的腐蚀,然而对于可钝化金属而言超过一定的浓度后会引起金属钝态,从而腐蚀速度迅速降低并保持在一个较低的恒定速度,不再受其浓度的影响,Ti基合金和不锈钢是典型的例了,但介质的氧化作用继续加强可以促使金属的过钝化溶解,加速金属的腐蚀。

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