目的 研究攀枝花选钛尾矿制备出钒钛搪瓷的表面形貌、密着性能及在质量分数为30% H2SO4溶液中的耐酸腐蚀性能。方法 将选钛尾矿煅烧或制备成V2O5 助剂后，分别加入到搪瓷原料中，经熔融淬化，制备出搪瓷釉料，釉料制浆涂覆在脱碳热处理后的Q235 碳钢表面，经850 ℃搪烧制备出钒钛搪瓷涂层，并通过XRD、SEM 及EDS 研究其涂层的表面形貌、密着性能及耐酸性能。结果 在搪瓷原料中直接加入煅烧选钛尾矿的质量分数高于8.4%时，制备出的搪瓷涂层表面存在明显的气泡，瓷釉面不细腻、光泽度低、耐酸性能不足，而在搪瓷釉料中添加V2O5 质量分数为3.5%～5%的助剂时，制备的搪瓷涂层密着性能、釉面光泽度及化学耐酸性能显著提高。结论 将选钛尾矿制成V2O5 助剂添加釉料中制备的搪瓷涂层界面易形成Fe-V 过渡层，利于提高搪瓷的密着性能。在酸溶液中，瓷釉面形成含有SiO2 的保护膜，进一步阻止被酸腐蚀，提高了耐酸性能。

The work aims to research surface morphology, adherence of V-Ti enamel prepared with Panzhihua ilmenite tailings as well as its acid corrosion resistance in 30% H2SO4 solution. The ilmenite tailings were added to enamel raw materials after calcination or being made into V2O5 assistant, then fused and quenched to prepare enamel glaze. Then glaze pulping was coated on surface of Q235 carbon steel which was subject to decarburization and heat treatment so as to prepare V-Ti enamel coating in 850 ℃ enameling burning. And surface morphology, adherence and acid corrosion resistance of its coating were studied by means of XRD, SEM and EDS. If mass fraction of the calcined titanium tailings directly added to enamel was higher than 8.4%, surface of the prepared enamel coating was subject to evident bubbles, rough glaze surface, low glossiness and insuf ficient acid resistance. However, when the mass fraction of V2O5 additive added to the enamel glaze was 3.5%~ 5%, the surface morphology, adherence and acid corrosion resistance of the prepared enamel coating were improved significantly. The making of ilmenite tailings into V2O5 assistant and addition of enamel coating interface prepared in the glaze may form Fe-V transition layer easily, contributing to improving the adherence of enamel. Meanwhile, the SiO2 protective film forms on the enamel surface in the acid solution to prevent acid corrosion and improve its corrosion resistance.