Investigation of the influence of iron‐containing abrasives on the corrosion behaviour of the aluminium alloy AlSi1.2Mg0.4,Materials and Corrosion

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Investigation of the influence of iron‐containing abrasives on the corrosion behaviour of the aluminium alloy AlSi1.2Mg0.4
Materials and Corrosion ( IF 1.6 ) Pub Date : 2020-04-19 , DOI: 10.1002/maco.202011657
Martin Babutzka ₁ , Thoralf Müller ₁ , Jürgen Mietz ₁ , Andreas Burkert ₁

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The corrosion resistance of aluminium surfaces is closely linked to the surface state after a grinding process. For years, iron‐containing abrasive materials were suspected to lead to increased corrosion susceptibility after processing of aluminium surfaces. To prove a possible correlation between the iron content of an abrasive and the corrosion behaviour of aluminium components, scientific investigations and experimentally practical corrosion tests are necessary. For the current investigation, specimens of a technical Al‐Si alloy from the same batch were used. The test specimens were mechanically ground with various resin‐bonded model abrasives containing different iron contents. The performed corrosion tests did not reveal a negative influence of the different iron‐containing abrasives on the corrosion behaviour of the Al–Si alloy. However, the most sensitive measuring method (electrochemical noise) showed differences in the surface activity depending on the type of abrasive.

中文翻译：

研究含铁磨料对铝合金AlSi1.2Mg0.4腐蚀行为的影响

铝表面的耐腐蚀性与磨削过程后的表面状态密切相关。多年来，怀疑含铁的研磨材料会导致铝表面处理后腐蚀敏感性增加。为了证明磨料中的铁含量与铝部件的腐蚀行为之间可能存在关联，必须进行科学调查和实验性的实际腐蚀测试。对于当前的调查，使用了同一批次的工业Al-Si合金的样本。用各种含铁含量不同的树脂粘结模型磨料对试样进行机械研磨。进行的腐蚀测试并未显示出不同的含铁磨料对Al-Si合金的腐蚀行为的负面影响。然而，

更新日期：2020-04-19

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