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研制了一种Al-Bi-Pb-In-Ga合金牺牲阳极;用恒电流法研究了合金在自来水、淡海水、人造海水介质中的电化学性能;用金相显微技术和扫描电子显微技术观察牺牲阳极的微观组织和腐蚀后的表面形貌;结果表明,合金化元素均匀弥散分布的Al-Bi-Pb-ln-Ga合金牺牲阳极在自来水、淡海水、人造海水介质中腐蚀溶解均匀,阳极极化弱,电极电位负,阳极利用率高。
An Al-Bi-Pb-In-Ga alloy sacrificial anode was developed. The electrochemical performance of the alloy in tap water, fresh seawater and artificial seawater was studied by galvanostatic method. The morphology of the sacrificial anode was observed by metallographic microscopy and scanning electron microscopy Sacrificial anode microstructure and surface morphology after etching. The results show that Al-Bi-Pb-ln-Ga alloy sacrificial anode with even dispersed alloying elements dissolves evenly in tap water, fresh seawater and artificial seawater. The anode Weak polarization, negative electrode potential, high anode utilization.