铜在典型内陆盐土中的腐蚀特征

腐蚀学报（英文）, 2009, 21(6): 522-525.

铜在典型内陆盐土中的腐蚀特征

鹿中晖 ^1, , 章钢娅 ^2, , 王永红 ^3, , 李英志 ^4, , 孙慧珍 ^5,

1.电信科学技术第五研究所,成都,610062

2.中国科学院南京土壤研究所,南京,210008

3.电信科学技术第五研究所,成都,610062

4.电信科学技术第五研究所,成都,610062

5.中国科学院南京土壤研究所,南京,210008

基金项目: 国家自然科学基金重大项目(50499333)

关键词：铜 , 内陆盐土 , 腐蚀特征

CORROSION CHARACTERISTICS OF Cu IN TYPICAL INLAND SALTY SOILS

Keywords： Cu , inland salty soil , corrosion characteristics

采用在两种西部内陆盐土中自然埋藏的试验方法,结合扫描电镜、EDAX能谱及X射线衍射分析研究了铜的产物及腐蚀特征.结果表明,铜在格尔木盐渍土中呈大面积斑坑腐蚀,在库尔勒荒漠土呈局部较深点蚀.土壤中氧气含量、氯离子和硫酸根离子含量、含水量及土壤质地是造成两种土壤中铜腐蚀差异的主要原因.

By means of naturally burying specimens in two typical inland salty soils the corrosion behavior of pure Cu was examined.Then the corrosion characteristics of pure Cu and its corrosion products were analyzed by using SEM,EDAX and XRD.The results showed that Cu was pit-corroded in large area in eermu salty soil and was partly deep spot-corroded in Kuerle desert soil which contained less salt.It was concluded that the corrosion of Cu mainly resulted from the amount of O_2,Cl~- ,SO_4~(2-) and water content in soil as well as the soil texture.

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