【摘要】 为了使FeMnSi记忆合金管接头广泛应用于海水管路间的连接和修复，通过电化学测试、腐蚀表面分析技术、腐蚀产物分析技术，分析了Fe17Mn5Si10Cr5Ni记忆合金在人造海水中的腐蚀行为及机理。结果表明：Fe17Mn5Si10Cr5Ni记忆合金在人造海水中可发生电化学腐蚀，3 h时其自腐蚀电位为-0.185 V,腐蚀时间延长其自腐蚀电位逐渐下降；Fe17Mn5Si10Cr5Ni记忆合金在人造海水中的腐蚀形式为点蚀；腐蚀产物呈黑褐色，产物疏松、黏附性差且与基体结合强度低；腐蚀产物为Fe₂O₃、Fe₃O₄、FeO（OH）。更多还原

【Abstract】 For widely applying Fe17Mn5Si10Cr5Ni memory alloy pipe joints in the connection and repair of seawater pipelines, the corrosion behaviors and mechanism of Fe17Mn5Si10Cr5Ni memory alloy in artificial seawater were analyzed by electrochemical test, corrosion surface analysis technology and corrosion product analysis technology. Results showed that Fe17Mn5Si10Cr5Ni memory alloy could undergo electrochemical corrosion in artificial seawater, and its self-corrosion potential at 3 h was-0.185 V. The self-corrosion potential decreased gradually with the increase of corrosion time, and the corrosion form of Fe17Mn5Si10Cr5Ni memory alloy in artificial seawater was pitting corrosion. Furthermore, the corrosion products were black brown and loose, with a poor adhesion and low bonding strength with the substrate. The corrosion products were Fe₂O₃, Fe₃O₄ and FeO（OH）.更多还原