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<正> 高硅铸铁阳极是防止钢质管道、贮罐、码头钢桩、海上石油钻井平台等腐蚀的牺牲阳极。其铸件结构如图1。经过反复实践,总结出其化学成分范围为(wt%):0.8~1.0C,14.5~16.5si,0.35~0.45Mn,0.045~0.060P,0.01~0.02S,4.0-5.5Cr。孕育稀土