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一、前言提起不锈钢,人们一定会认为它们是不会生锈的,不仅一般人这么认为,就是一些工程技术人员也都这么认为,其实并非如此。不锈钢的不锈即所谓耐蚀性是有条件的,相对的,而不是绝对的。在一些介质如硝酸等氧化性介质中可能是不锈的,而在另一些介质如含Cl-离子等还原性离子的介质中就可能生锈。世界上不存在在任何介质中都不生锈的不锈钢,即使所谓“不锈”也不是说没有腐蚀,而是腐蚀极缓慢以致我们肉眼观察不出来而已。
First, the preface Mention stainless steel, people will think they will not rust, not only the average person thinks, that is, some engineers and technicians also think so, in fact, not the case. Stainless steel stainless steel is the so-called corrosion resistance is conditional, relative, not absolute. In some media such as nitric acid and other oxidizing media may be stainless, but in other media such as Cl - ions and other reducing ions in the media may rust. There is no stainless steel in the world that does not rust in any medium, even though the so-called “stainless” does not mean that there is no corrosion, but corrosion is so slow that we can not be observed with the naked eye.