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| 本文研究了几种典型国产钛合金在天然海水和80℃热海水中与铜合金、不锈钢以及不同钛合金之间(在表面积相同条件下)相互接触时的电偶腐蚀行为。结果表明,不同钛合金之间可以匹配使用;钛合金与铜合金或不锈钢接触时能加速后者的腐蚀,但在面积比不大的情况下这种加速作用不大。 |
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| THE STUDY OF GALVANIC CORROSION OF TITANIUM ALLOYS IN SEAWATER |
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| Abstract: |
| Galvanic corrosion of titanium alloys was studied in natural and hot sea water in coupling with stainless sted copper-nickel alloy (made in China). Cathodic polarization curves of several titanium alloys showed that titanium alloys have higher oxygen reduction super-potential. That is, oxygen is reduced much easier on titaium alloys than on stainless steels or on coppernickel alloy. Open circuit potential-time curve and galvanic current-time curve of titanium alloy coupled with stainless steel or copper-nickel alloy in natural sea water and in hot sea water of 80℃, shows that the galvanic currents are little, which is consistent with the corrosion rate before and after coupling of the alloys. Therefore, contacting with B30 or 18-8ss will not accelerate the corrosion of the latters intensively. Further study shows that there is no galvanic corrosion between the two titanium al-loys themselves. |
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