伴随着热浸镀钢材的大量应用，热浸镀设备在液态金属中的腐蚀问题及引起的钢材表面质量降低问题逐渐凸显，制约了热浸镀行业的发展。概述了在热浸镀熔融Galvalume合金(Zn-55Al-1.6Si%)中，铁基、钴基及其他合金的腐蚀行为。合金及腐蚀产物的溶解，腐蚀层中的元素互扩散，腐蚀产物生长的应力集中，是造成合金基体失效的主要原因。通过金属合金化或施加防护涂层，提高了材料对液态锌铝合金的耐蚀性。综述了引入不同合金元素对合金腐蚀行为的影响，并评估了陶瓷涂层、金属陶瓷复合涂层及搪瓷涂层在此环境中的防护效果。合金基体或防护涂层中引入硼化物，可有效降低液态锌铝合金的侵蚀。提高材料在液态金属环境中的不润湿性是改善其耐蚀性的关键。最后，展望并总结了熔融Galvaleme合金中的高性能防护涂层、合金设计原则及其腐蚀失效特性。

With the wide application of hot-dip steel, corrosion of hot-dip equipment in liquid metal and reduction of steel surface quality caused by it become gradually prominent, which limit the sustainable development of hot dipping industry. In this paper, corrosion behaviors of iron-based, cobalt-based and other alloys in hot-dip molten Galvalume (Zn-55Al-1.6Si%) alloy were discussed. The main factors for alloy’s failure are the dissolution of the alloy and its corrosion product, the mutual elements diffusion and the growth stress concentration in corrosion layer. To enhance corrosion resistance of materials in liquid Zn-Al alloy, various protective methods, such as alloying of metals and applying of protective coating were proposed. The influence of different alloying elements on the corrosion behavior of alloys was reviewed, and the protective effects of ceramic coatings, metal-ceramic coatings and enamel coatings in the condition were evaluated. The boride alloyed in substrate or in coating can effectively reduce the corrosion in the liquid Zn-Al alloy, of which its main mechanism is raising the non-wettability in liquid metal. Finally, the designing principles for high-performance protective coatings and alloys, as well as their failure mechanism in molten Galvalume alloy are prospected and summarized.