富Sb相对锌合金在近中性和酸性溶液中耐蚀性的影响
发布时间：2019-05-20 13:08
【摘要】：通过SEM、TEM和电化学测试方法研究了Zn-1.2Sb合金中富Sb相的微观结构和电化学性质。结果表明,Zn-1.2Sb合金中的富Sb第二相Sb∶Zn原子比约为2∶3,但其晶体结构与Sb_2Zn_3不同。在不同的pH值环境中,电化学测试显示富Sb相的电化学活性比Zn低。富Sb相对Zn耐蚀性的影响有明显差异,在近中性0.1 mol/LNaCl(pH=6.5)溶液中,富Sb相对纯Zn的腐蚀过程作用不明显,对阳极和阴极氧还原反应均没有显著的促进作用;在酸性0.1 mol/LNaCl(pH=3)溶液中,富Sb相显著促进阴极析氢反应,导致锌合金耐蚀性能变差。
[Abstract]:The microstructure and electrochemical properties of Sb-rich phase in Zn-1.2Sb alloy were studied by SEM,TEM and electrochemical measurements. The results show that the Sb:Zn atomic ratio of the second phase rich in Sb in Zn-1.2Sb alloy is about 2 鈮，
本文编号：2481666
[Abstract]:The microstructure and electrochemical properties of Sb-rich phase in Zn-1.2Sb alloy were studied by SEM,TEM and electrochemical measurements. The results show that the Sb:Zn atomic ratio of the second phase rich in Sb in Zn-1.2Sb alloy is about 2 鈮，
本文编号：2481666
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