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首页> 外文会议>NACE International annual conference exposition;Corrosion 2000 >PERFORMANCE TESTING OF SACRIFICIAL ALUMINIUM ANODE ALLOYS - WHAT CAN BE CONCLUDED?
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PERFORMANCE TESTING OF SACRIFICIAL ALUMINIUM ANODE ALLOYS - WHAT CAN BE CONCLUDED?

机译：专用铝阳极合金的性能测试-可以得出什么结论？

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摘要

Performance testing of aluminium anode alloys is discussed with special focus on therndetermination of electrochemical capacity. It is shown that available test methods are unreliable withrnrespect to obtaining consistent and reproducible results. Numerous short and long term test results arernpresented and possible explanations discussed. The problem is probably due to the electrochemicalrnnature of aluminium and the practical difficulties in correctly cleaning the anode samples after exposure.rnAlloy microstructure modifications have shown to have a positive influence on the electrochemicalrncapacity. Use of a titanium boride grain refining agent was found to improve the capacity by 3-4rn%points. Long term testing is shown to give poorer results than short term tests, probably because of arnlower anodic current density. Care should be taken when selecting anodes based on electrochemical testrnresults.
机译：讨论了铝阳极合金的性能测试，重点是电化学容量的确定。结果表明，可用的测试方法相对于获得一致且可重复的结果而言是不可靠的。给出了大量短期和长期测试结果，并讨论了可能的解释。该问题可能是由于铝的电化学性质以及暴露后正确清洁阳极样品的实际困难。合金的微观结构改变已显示出对电化学容量的积极影响。发现使用硼化钛晶粒细化剂可将容量提高3-4％。与长期测试相比，长期测试显示的结果较差，这可能是由于阳极电流密度较低。根据电化学测试结果选择阳极时应格外小心。

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