论文部分内容阅读
1 不锈钢定义不锈钢是一系列在空气、水、盐溶液、酸溶液以及其他腐蚀介质中具有高度化学稳定性的钢种。不锈钢的耐腐蚀性取决于钢中所含的合金元素。铬是使不锈钢获得耐腐蚀性的基本元紊,当钢中含铬量达到12%左右时,铬与腐蚀介质中的氧作用,在钢表面形成一层很薄的氧化膜(钝化膜),可阻止钢的基体进一步腐蚀,达到不生锈的效果。可以认为含铬量≥12%的钢为不锈钢。一种不锈钢可在许多介质中具有良好的耐腐蚀性,但在另外某种介质中,却可能因对该种介质化学稳定
1 Stainless Steel Definition Stainless steel is a series of steels that are highly chemically stable in air, water, salt solutions, acid solutions and other corrosive media. The corrosion resistance of stainless steel depends on the alloying elements contained in the steel. Chromium is the basic element of stainless steel to achieve corrosion resistance, when the steel containing chromium content of about 12%, chromium and corrosive medium oxygen role in the steel surface to form a thin layer of oxide film (passive film) , Can prevent further corrosion of the steel substrate, to achieve the effect of no rust. It can be considered that the steel containing more than 12% chromium is stainless steel. A stainless steel can have good corrosion resistance in many media, but in some other media, it may be due to the chemical stability of the medium