中国腐蚀与防护学报
中國腐蝕與防護學報
중국부식여방호학보
JOURNAL OF CHINESE SOCIETY FOR CORROSION AND PROTECTION
2001年
1期
46-53
,共8页
钢海水电偶腐蚀
鋼海水電偶腐蝕
강해수전우부식
steel%seawater%galvanic corrosion
获取了不同电位差的钢偶对在海水中以不同面积比偶合的腐蚀结果;讨论了海水中钢偶对的电偶腐蚀行为;对文献中推导的海水中钢偶对的腐蚀速度公式进行了检验和简化.海水中钢偶对阳极的腐蚀速度随阴、阳极自腐蚀电位差和阴/阳极面积比的增大而增大.阳极的腐蚀速度与阴/阳极面积比的关系是非线性的,且阳极的腐蚀速度随阴/阳极面积比的增大有一个极限值.阴极的腐蚀速度随阴/阳极面积比减小和阴/阳极电位差增大而减小.简化的海水中钢偶对的腐蚀速度公式与试验结果符合较好.
穫取瞭不同電位差的鋼偶對在海水中以不同麵積比偶閤的腐蝕結果;討論瞭海水中鋼偶對的電偶腐蝕行為;對文獻中推導的海水中鋼偶對的腐蝕速度公式進行瞭檢驗和簡化.海水中鋼偶對暘極的腐蝕速度隨陰、暘極自腐蝕電位差和陰/暘極麵積比的增大而增大.暘極的腐蝕速度與陰/暘極麵積比的關繫是非線性的,且暘極的腐蝕速度隨陰/暘極麵積比的增大有一箇極限值.陰極的腐蝕速度隨陰/暘極麵積比減小和陰/暘極電位差增大而減小.簡化的海水中鋼偶對的腐蝕速度公式與試驗結果符閤較好.
획취료불동전위차적강우대재해수중이불동면적비우합적부식결과;토론료해수중강우대적전우부식행위;대문헌중추도적해수중강우대적부식속도공식진행료검험화간화.해수중강우대양겁적부식속도수음、양겁자부식전위차화음/양겁면적비적증대이증대.양겁적부식속도여음/양겁면적비적관계시비선성적,차양겁적부식속도수음/양겁면적비적증대유일개겁한치.음겁적부식속도수음/양겁면적비감소화음/양겁전위차증대이감소.간화적해수중강우대적부식속도공식여시험결과부합교호.
Galvanic corrosion results of steel couples with various free corrosion potential difference and surface area ratio of cathode to anode in seawater have been obtained. Galvanic corrosion behavior of the steel couples was discussed. Equation of anodic corrosion rate of steel couples in seawater were examined and simplified. With the increase of free corrosion potential difference and surface area ratio of cathode to anode, the anodic corrosion rates of steel couples increase. The relationship between anodic corrosion rate of steel couples and surface area ratio of cathode to anode is nonlinear. With the increase of surface area ratio of cathode to anode, the anodic corrosion rates have a limit. With the increase of corrosion potential difference between cathode and anode and the decrease of area ratios of cathode to anode, corrosion rate of cathode decreased. The simplified equation of anodic corrosion rate of steel couples in seawater has a good consistence with the experimental results.