200系列不锈钢耐腐蚀性能研究

来源期刊：钢铁钒钛2010年第2期

论文作者：齐达 李晶 董力 余健

文章页码：72 - 76

关键词：不锈钢； 均匀腐蚀； 点蚀； 镍含量

Key words：stainless steel； uniform corrosion； pitting corrosion； nickel content

摘    要：通过在3.5%NaCl溶液中动电位极化曲线测定及盐雾试验,对200系列不锈钢和304不锈钢的耐腐蚀性能进行了对比研究。结果发现:200系列不锈钢的耐点蚀及耐均匀腐蚀性能远低于304不锈钢,在3.5%NaCl溶液中,201、202及304不锈钢的点蚀电位分别为-32、-22、312 mV,腐蚀速率分别为0.007 1、0.006 2、0.002 6 mm/a。

Abstract: Corrosion resistance of 200 and 304 series stainless steel has been studied by means of potentiodynamic polarization curves in 3.5% NaCl solution and salt spray test.Results show that pitting corrosion resistance and uniform corrosion resistance of 304 series stainless steel is much better than that of 200 series.Pitting potential of 201,202 and 304 series stainless steel in 3.5% NaCl solution are -32,-22,312 mV and corrosion rate are 0.007 1,0.006 2,0.002 6 mm/a respectively.