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在酸性、中性及碱性土壤中，用自然埋设试件的方法，研究了１Ｃｒ１８Ｎｉ９Ｔｉ 不锈钢分别经过１ 、３ 、５ 年三个试验周期后的腐蚀特征． 结果表明，不锈钢在酸性及中性土壤中腐蚀轻微，在高盐碱性土壤中腐蚀比中酸性土壤稍微严重些，而且出现点蚀现象；土壤中Ｃｌ及ＳＯ２４ 是影响不锈钢腐蚀的最主要因素，随着土壤中Ｃｌ及ＳＯ２ －４ 增多，不锈钢的腐蚀失重近似线性增大；土壤ｐＨ 值也是影响不锈钢腐蚀的主要因素，土壤ｐＨ 值增加，腐蚀失重缓慢增大，当土壤ｐＨ 值达到８ ．５ 以上时，腐蚀失重急剧增大； 自然腐蚀电位能大致上反映不锈钢在土壤中的腐蚀行为，腐蚀电位较正，腐蚀轻微，腐蚀电位较负，腐蚀较严重．
In acidic, neutral and alkaline soils, the corrosion characteristics of 1Cr18Ni9Ti stainless steel after three, three, and five years respectively were studied by natural embedding test specimens. The results show that stainless steel is mildly corroded in acidic and neutral soils, and slightly corroded in high-salty alkaline soils than moderately acidic soils, and pitting corrosion occurs. In the soil, Cl and SO2-4 are the most influential factors on stainless steel corrosion The main factor is that with the increase of Cl and SO2-4 in soil, the corrosion weight loss of stainless steel increases approximately linearly. The pH value of soil is also the main factor affecting the corrosion of stainless steel. The soil pH increases slowly and the corrosion weight loss increases slowly. Reach 8. 5, the corrosion loss increased sharply. The natural corrosion potential could largely reflect the corrosion behavior of stainless steel in soil. The corrosion potential was more positive, the corrosion was slight, the corrosion potential was more negative and the corrosion was more serious.