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循环水设备穿孔主要在于垢下腐蚀 设备穿孔往往是因为垢下腐蚀，垢下腐蚀又称为氧浓差电化学腐蚀，即缺氧区变阳极，被腐蚀，是设备穿孔的主要原因。当金属表面有垢、粘泥等覆盖物时，形成了氧浓差电池，垢下是缺氧区，氧气进不来，成为阳极，失电子金属不断溶解：垢外是富氧区，成为阴极，只负责消耗电子，不腐蚀。溶解的金属离子水解会使垢下变酸性，同时氯离子等进去维持电中性，形成强腐蚀性的酸性氯化物溶液，造成深坑状点蚀
0:31
循环水设备穿孔主要在于垢下腐蚀 设备穿孔往往是因为垢下腐蚀，垢下腐 …
4 weeks ago
douyin.com中洗环保工业清洗
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