【摘要】 分析了低碳钢在500℃下受不同时间的静态锌液腐蚀机制及含碳量对腐蚀过程的影响.实验表明,Fe与Zn通过反应扩散,依次形成了Г、δ1、ζ相.且δ1相的晶界强度低,在晶界应力和锌液腐蚀及锌液热对流冲击的共同作用下易于开裂而脱落到锌液中去.此外,含碳量越高,δ1相层越厚,腐蚀越快.在反应过程中,Fe原子一方面通过化合物层溶解于锌液中,另一方面,δ1相颗粒脱落到锌液中而消耗,腐蚀量为两者的总和.更多还原

【Abstract】 The corrosion mechanism and effect of carbon content on corrosion behavior of low carbon steel at 500?℃ in the galvanizing zinc was analyzed.The results indicate that Fe and Zn form Г、δ₁、ζ compounds through reaction diffusion.The strength of the δ₁ phases is so low that they are easy to crack and brush off into galvanizing zinc due to both interface stress and thermal convection.In addition,the more the carbon content,the thicker the δ₁ phase is and the faster the corrosion occurs.During reaction,Fe atoms will（dissolve） into the galvanizing zinc,and the δ₁ phases are consumed through dropping into the galvanizing zinc.The corrosion amount equals to the summation of both dissolved Fe and consumed δ₁ phases.更多还原