高电位镁合金牺牲阳极

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高电位镁合金牺牲阳极!

High Potential Magnesium Alloy Sacrificial Anodes

高电位镁合金粞牲阳极是镁锰合金(Mn的含量甚至达到 0.5%~1.3%),其电化学性能满足开路电位大于 -1.7V,电流 效率大于50%。(超高电位阳极指开路电位>-1.85V、相对CuCuSO4,电流效率大于 60% 的镁阳极);低电位镁合金牺牲阳极是镁铝锌合金,主要有 AZ31 系列和 AZ63 系列。

高电位镁阳极分铸造与挤压二类,主要用于高电呾率的土壤环境及淡水之中,如对输油管道、海上钻油平台、港口码头和地下建筑等钢构建筑的保护。生产过程要研控锰铁等元素,降低有害杂质含量,细化品粒度减少铸造缺陷,避免镁阳极自溶倾向,否则电化学性能很难合格。遗过铸造上短流程工艺、分层加热或低压转注技术,公司生产的高电位钱阳极产品经超声波探伤、缩孔、表面质量、无夹杂与氧化夹杂现象、电化学性能良好。

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