钢丝镀层铁基锌钴扩散机理研究  

Study on Mechanism of Iron Based Zinc and Cobalt Diffusion in Steel Coating

作　　者：朱晨露[1,2] 姚利丽 周志嵩[1,2] 魏于博 王涛 柯增光 ZHU Chenlu;YAO Lili;ZHOU Zhisong;WEI Yubo;WANG Tao;KE Zengguang(Jiangsu Xingda Steel Tyre Cord Co.,Ltd,Taizhou 225721,China;Jiangsu Key Laboratory for Structural and Functional Metal Materials Composites,Taizhou 225721,China)

机构地区：[1]江苏兴达钢帘线股份有限公司,江苏泰州225721 [2]江苏省结构与功能金属复合材料重点实验室,江苏泰州225721

出　　处：《轮胎工业》2020年第4期247-251,共5页Tire Industry

摘　　要：研究钢丝镀层铁基表面锌钴的扩散机理。结果表明:对于铁基钴-锌镀层钢丝,当扩散温度低于锌的熔点时,锌向钴和铁基体中扩散,在镀层外侧形成钴-锌合金,内侧形成铁-锌合金,一旦钴-锌合金形成后,钴不参与后续扩散;当扩散温度高于锌的熔点时,钴和铁向锌液中扩散,锌与铁优先反应形成铁-锌合金,随着扩散时间的延长,钴扩散到铁-锌合金中,形成Fe(Co)Zn13。对于铁基锌-钴镀层钢丝,当扩散温度低于锌的熔点时,其扩散结果与铁基钴-锌镀层钢丝高于锌的熔点时的扩散结果相同,但最初的扩散过程不同。The diffusion mechanism of iron based zinc and cobalt in the surface coating of steel was studied. The results showed that,for iron based cobalt-zinc coated steel,when the diffusion temperature was lower than the melting point of zinc,zinc diffused into the cobalt and iron matrix,forming a cobalt-zinc alloy on the outside of the coating and an iron-zinc alloy onthe other side. After the cobalt-zinc alloy was formed,cobalt did not participate in the subsequent diffusion. When the diffusion temperature was higher than the melting point of zinc,cobalt and iron diffused into the zinc solution,and zinc and iron preferentially reacted to form an iron-zinc alloy. With the extension of the diffusion time,cobalt diffusion into iron-zinc alloy to form Fe(Co)Zn13. For iron based zinc-cobalt coated steel,when the diffusion temperature was lower than the melting point of zinc,the diffusion results were the same as that of iron based cobalt-zinc coated steel when the diffusion temperature was higher than the melting point of zinc,but the initial diffusion process was different.

关 键 词：钢丝帘线 铁基钴-锌镀层 铁基锌-钴镀层 扩散机理 

分 类 号：TQ330.389[化学工程—橡胶工业]