本发明涉及本发明涉及9CrMoCoB钢热加工技术领域，尤其是一种应用于9CrMoCoB钢热加工的抗氧化涂料和使用方法。本发明的抗氧化涂料包括粉料和黏结剂，所述粉料与所述黏结剂拌和均匀制成所述抗氧化涂料，其中粉料按重量份数计包含：SiO₂ 30‑40份、Al₂O₃ 20‑25份、B₄C 20‑25份、SiC 15‑25份。采用Al₂O₃、SiO₂、B₄C和SiC作为抗氧化涂料的粉料部分，使抗氧化涂料具有以下优异的物化性质：化学稳定性、耐腐蚀性、抗氧化性、表面张力、润湿性能等特点。

The invention relates to the technical field of 9crmocob steel hot processing, in particular to an antioxidant coating applied to 9crmocob steel hot processing and an application method. The antioxidant coating of the invention comprises a powder and a binder. The powder is evenly mixed with the binder to make the antioxidant coating, wherein the powder comprises 30-40 parts of SiO2, 20-25 parts of Al2O3, 20-25 parts of B4C and 15-25 parts of SiC by weight. Al2O3, SiO2, B4C and SiC are used as the powder part of the antioxidant coating, so that the antioxidant coating has the following excellent physical and chemical properties: chemical stability, corrosion resistance, oxidation resistance, surface tension, wettability and so on.