在中性盐雾模拟的海洋大气环境中，对1 000 MPa级超高强度热镀锌钢板进行了腐蚀加速试验，利用激光共聚焦显微镜、扫描电镜以及电化学试验等手段对盐雾腐蚀不同时间后镀锌钢板的耐腐蚀性能进行了研究。结果表明：镀锌钢板首先发生点蚀，点蚀坑直径15~25 μm且无明显增大趋势，随后逐渐向均匀腐蚀发展；腐蚀产物最初为较为疏松的针絮状，随后发展为较为致密的板带状和团簇状，基体暴露后腐蚀产物以疏松沟壑状为主；锌层腐蚀初期产物主要是Zn（OH）₂和ZnO，氯离子则会与锌氧化物结合生成ZnCl和Zn₅（OH）₈Cl₂·H₂O，并破坏氧化层，加速腐蚀产物的溶解，盐雾试验较长时间后还会生成Zn₅（CO₃）₂（OH）₆，基体腐蚀产物主要为Fe₂O₃；盐雾试验进行至48 h时，腐蚀产物较为致密，腐蚀速率和腐蚀电流密度均处于较低水平，其中腐蚀速率为0.195 g/（m²·h），腐蚀电流密度为3.83 μA/cm²，相对致密的腐蚀产物对镀锌钢板的全面腐蚀起到明显的抑制作用。

The corrosion accelerated test for 1 000 MPa grade ultra-high strength hot-dip galvanized steel sheets was carried out in marine atmospheric environment simulated by neutral salt-spray. The corrosion resistance of galvanized steel sheets after salt-spray corrosion for different periods of time was studied by means of laser confocal microscopy, scanning electron microscopy and electrochemical test. The results show that the galvanized steel sheets corroded as pitting. The pit diameters were 15-25 μm, and there was no obvious increase trend. Subsequently, the corrosion form of the galvanized steel sheets gradually developed toward uniform corrosion. Corrosion products were initial looser needle-like, and subsequently developed into denser ribbons and clusters. After the substrate was exposed, the corrosion products were dominated by loose gully. The primary products of zinc layer corrosion were mainly Zn(OH)₂ and ZnO. Chloride ion combined with zinc oxide to form ZnCl and Zn₅(OH)₈Cl₂·H₂O, and destroyed the oxide layer and accelerated the dissolution of corrosion products. Zn₅(CO₃)₂(OH)₆ was generated after salt-spray test for a long time, and the main corrosion products of matrix were Fe₂O₃. When the salt-spray test was conducted for 48 h, the corrosion products were dense, and the corrosion rate of 0.195 g/(m²·h) and corrosion current density of 3.83 μA/cm² were both at a low level. The relatively dense corrosion products could obviously inhibit the overall corrosion of galvanized steel sheets.