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纯铝不宜作为牺牲阳极材料，必须合金化。合金元素的加入，可使铝的钝化膜受到破坏而正常溶解，同时使阳极晶粒细化、电位变负。熔炼了五种不同的Al-Zn-In系合金牺牲阳极材料，采用恒电流法，测定了不同温度下的阳极电化学性能。结果表明：牺牲阳极的电化学性能随着温度的升高而降低；牺牲阳极的表面溶解状态随温度升高变得不均匀；研究了牺牲阳极的综合电化学性能和表面溶解状态，结果表明，研制的2号阳极是高温下较好的牺牲阳极材料。
Pure aluminum should not be used as a sacrificial anode material and must be alloyed. The addition of alloying elements, aluminum passivation film can be destroyed and dissolved normally, while the anode grain refinement, the potential becomes negative. Five different Al-Zn-In alloy sacrificial anode materials were smelted. The galvanic properties of the anode at different temperatures were measured by galvanostatic method. The results show that the electrochemical performance of the sacrificial anode decreases with the increase of temperature. The surface dissolution state of the sacrificial anode becomes non-uniform with increasing temperature. The electrochemical performance and surface dissolution state of the sacrificial anode are studied. The developed anode 2 is a better sacrificial anode material at high temperatures.