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首页> 外文期刊>Leonardo Electronic Journal of Practices and Technologies >Corrosion behaviour of groundnut shell ash and silicon carbide hybrid reinforced Al-Mg-Si alloy matrix composites in 3.5% NaCl and 0.3M H2SO4 solutions
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Corrosion behaviour of groundnut shell ash and silicon carbide hybrid reinforced Al-Mg-Si alloy matrix composites in 3.5% NaCl and 0.3M H2SO4 solutions

机译：花生壳灰和碳化硅混杂增强的Al-Mg-Si合金基复合材料在3.5％NaCl和0.3M H 2 SO 4 溶液中的腐蚀行为

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摘要

The corrosion behaviour of Al-Mg-Si alloy based composites reinforced with groundnut shell ash (GSA) and silicon carbide (SiC) was investigated. The aim is to assess the corrosion properties of Al-Mg-Si alloy based hybrid reinforced composites developed using different mix ratios of GSA (a cheaply processed agro waste derivative which served as partial replacement for SiC) and SiC as reinforcing materials. GSA and SiC mixed in weight ratios 0:1, 1:3, 1:1, 3:1, and 1:0 were utilized to prepare 6 and 10 wt% of the reinforcing phase with Al ‐ Mg ‐ Si alloy as matrix using two ‐ step stir casting method. Mass loss and corrosion rate measurement was used to study the corrosion behaviour of the produced composites in 3.5% NaCl and 0.3M H2SO4 solutions. The results show that the Al-Mg-Si alloy based composites containing 6 and 10 wt% GSA and SiC in varied weight ratios were resistant to corrosion in 3.5% NaCl solution. The composites were however more susceptible to corrosion in 0.3M H2SO4 solution (in comparison with the 3.5% NaCl solution). It was noted that the Al-Mg-Si/6 wt% GSA-SiC hybrid composite grades containing GSA and SiC in weight ratio 1:3 and 3:1 respectively exhibited superior corrosion resistance in the 0.3M H2SO4 solution compared to other composites produced for this series. In the case of the Al-Mg-Si/10 wt% GSA-SiC hybrid composite grades, the corrosion resistance was relatively superior for the composites containing a greater weight ratio of GSA (75% and 100%) in 0.3M H2SO4 solution.
机译：研究了花生壳灰（GSA）和碳化硅（SiC）增强的Al-Mg-Si合金基复合材料的腐蚀行为。目的是评估使用不同混合比例的GSA（一种廉价加工的农业废物衍生物，可部分替代SiC）和SiC作为增强材料开发的基于Al-Mg-Si合金的混杂增强复合材料的腐蚀性能。使用重量比为0：1、1：3、1：1、3：1和1：0的GSA和SiC混合，以Al ‐ Mg ‐ Si合金为基体，制备6％和10 wt％的增强相两步搅拌铸造法。通过质量损失和腐蚀速率测量研究了所得复合材料在3.5％NaCl和0.3M H 2 SO 4 溶液中的腐蚀行为。结果表明，含有重量百分比为6和10的GSA和SiC的Al-Mg-Si合金复合材料，重量比各不相同，在3.5％NaCl溶液中具有抗腐蚀性能。然而，复合材料在0.3M H 2 SO 4 溶液（与3.5％NaCl溶液相比）中更容易受到腐蚀。值得注意的是，重量比为1：3和3：1的GSA和SiC的Al-Mg-Si / 6 wt％GSA-SiC杂化复合材料牌号在0.3MH 2 SO 4 解决方案相比，此系列生产的其他复合材料。在Al-Mg-Si / 10 wt％GSA-SiC杂化复合材料等级的情况下，对于在0.3MH中含有更大重量比（75％和100％）的GSA的复合材料，其耐腐蚀性相对较好。 2 SO 4 解决方案。

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