华中科技大学学报(自然科学版)
華中科技大學學報(自然科學版)
화중과기대학학보(자연과학판)
JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
2001年
5期
103-106
,共4页
土壤腐蚀%腐蚀速度%电极过程%土壤电阻率%电迁移
土壤腐蝕%腐蝕速度%電極過程%土壤電阻率%電遷移
토양부식%부식속도%전겁과정%토양전조솔%전천이
从分析土壤的各种性质入手,利用物理化学原理讨论了土壤电阻率的本质及其影响因素.结合电极过程动力学理论,研究了电迁移对金属在土壤中腐蚀的电极过程的影响,从而说明了用土壤电阻率来判断金属材料在土壤中的腐蚀速度有时会出现误判的原因.并解释了某些酸性土壤中金属材料的腐蚀速度随土壤电阻率的增大而增大,在某些含盐量高的土壤中金属材料的腐蚀速度不随土壤电阻率的减小而减小却会增大的现象.
從分析土壤的各種性質入手,利用物理化學原理討論瞭土壤電阻率的本質及其影響因素.結閤電極過程動力學理論,研究瞭電遷移對金屬在土壤中腐蝕的電極過程的影響,從而說明瞭用土壤電阻率來判斷金屬材料在土壤中的腐蝕速度有時會齣現誤判的原因.併解釋瞭某些痠性土壤中金屬材料的腐蝕速度隨土壤電阻率的增大而增大,在某些含鹽量高的土壤中金屬材料的腐蝕速度不隨土壤電阻率的減小而減小卻會增大的現象.
종분석토양적각충성질입수,이용물이화학원리토론료토양전조솔적본질급기영향인소.결합전겁과정동역학이론,연구료전천이대금속재토양중부식적전겁과정적영향,종이설명료용토양전조솔래판단금속재료재토양중적부식속도유시회출현오판적원인.병해석료모사산성토양중금속재료적부식속도수토양전조솔적증대이증대,재모사함염량고적토양중금속재료적부식속도불수토양전조솔적감소이감소각회증대적현상.
Based on the analysis of the properties of soil, the essence and relative of resistivity of the soil are
discussed with the physic-chemical theory. The effect of electric migration on the electrode processes of themetal corrosion in soil is studied with the theory of the electrode kinetics. The result shows that the soil resistivity can't be the critersion of the corrosion rates of metal in a variety of soil. It can be explained that the corrosion rates of metal in some acid soils increase with the soil resistivity increase, while the corrosion rates of metal in certain soils containing high salt content do not increase as well as soil resistivity decrease.