材料期刊网

获得了５种含铬低合金钢在海水中暴露１、２、４、８（７）年的腐蚀数据，讨论Ｃｒ对钢耐海水腐蚀的影响，铬钢的耐海水腐蚀性不仅与Ｃｒ的含量有关，还与其他复合合金元素有关。短期浸泡时，钢的耐海水腐蚀性随铬含量（无其他合金元素复合）增加而提高。长期浸泡，Ｃｒ对钢的耐海水腐蚀性有害，约１％Ｃｒ与Ｍｏ（－Ａｌ）复合对钢的耐海水腐蚀性的影响与Ｃｒ的影响没有左别大于２％Ｃｒ与Ｍｏ（－Ａｌ）复合大幅度提高钢在海水中短期浸泡的耐蚀性,并使耐蚀性逆转时间明显推迟.小于1%Cr与Mn-Cu、Cu-Si-V、Ni-Cu-Si、Ni-Mn等复合对钢的耐海水腐蚀性有害。　

Corrosion data of five chrunium steels immersed in seawater for 1,2,4,8 years were obtained. Effect of chrunium on comsion resistance of the steels in seawater mere evaluated. Cornion resistance of chrunium steels in seawater changes not only with chrunium content, but also with other alloying elanents combined with Cr. Corrosion resistance of steels in seawater increases with chrunium content for a short term hersion. For a long term immersion, chrunium decreases comion resistance of steels in seawater. The difference between the effect of cunbined about 1% Cr and m(-Al) on comion ~sistance of steel and the effect of chranium itself is not obvious. Over 2%Cr combined with a(-AI) increases corrosion resistance of steels for a short term immersion by a big margin, and the time that corrosion resistance of chrunium steels becanes wane than carbon steel is obviously postponed. While, Cr content less than 1% canbined with Mn-Cu, Cu-Si-V, Ni-Cu-Si or Ni-Mn is harmful to comion resistance of steel in seawater.