摘要
用埋设试件的方法，研究了１Ｃｒ１３、１Ｃｒ１８Ｎｉ９Ｔｉ两种不锈钢在酸性、中性及碱性土壤中经过１、３、５年三个试验周期后的腐蚀特征．结果表明，两种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严重，以点蚀为主，其中１Ｃｒ１８Ｎｉ９Ｔｉ耐蚀性优于１Ｃｒ１３．土壤中Ｃｌ－及ＳＯ２－４是影响不锈钢腐蚀的主要因素，土壤ＰＨ值也是影响不锈钢腐蚀的重要因素，且自然腐蚀电位越负，腐蚀越严重．
Corrosion behavior of 1Cr13 and 1Cr18Ni9Ti in soils were studied.The results showed that corrosion of stainless steels was mainly due to the contents of Cl - and SO 2- 4 in soils, and there was a good correlation between the weight loss of corrosion and the contents of Cl - and SO 2- 4 in soils.The pH of soils and corrosion potential were other important factors determining the corrosion rate of the stainless steels in soils.Some severe pitings of 1Cr13 were observed in alkaline soils.
出处
《腐蚀科学与防护技术》
CAS
CSCD
1999年第2期94-98,共5页
Corrosion Science and Protection Technology
基金
国家自然科学基金
