研究了加入不同量的Sc对AZ91镁合金微观组织和耐腐蚀性能的影响.利用金相显微镜和扫描电镜分析了合金的微观组织,并利用电化学分析技术分析了合金的耐腐蚀性能.结果表明,在0.18%~0.57%范围内随着Sc含量的增加,合金的微观组织不断细化,且合金的耐腐蚀性能得到提高,虽然合金的腐蚀电位变化不大,但合金的腐蚀电流密度变化显著,当Sc的加入量为0.39%时,电流密度最小.
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