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                不锈钢为什么会出现点蚀现象,因素有哪些?

                2018-08-20 10:12:19 165

                点蚀」的概念


                众所周知不锈钢拥有极好的耐腐蚀性是因为表面有一层看不见的氧化膜,使其呈钝态,如果氧化膜被破坏,不锈钢就将继续腐蚀下去。在很多情况下,钝化膜仅仅在金属表面的局部地方被破坏,腐蚀的作用在于形成细小的孔或凹坑,在材料表面产生无规律分布的小坑状腐蚀,这就是不锈钢的点蚀现象