Method for preparing anti-oxidation coating on graphite surface

The invention provides a graphite material for metal smelting. A pyrolytic carbon coating is compounded on the surface of a graphite matrix. According to the graphite material with the anti-oxidation coating, the pyrolytic carbon anti-oxidation coating is uniform and compact, is firmly combined with a graphite body material, is high in binding force, is difficult to fall off, does not contain non-carbon elements, greatly prolongs the service life of the graphite material under a high-temperature working condition, and has the advantages of being good in anti-oxidation performance, long in service life and the like. The invention further provides a method for preparing the anti-oxidation coating on the graphite surface, and the method is simple in process, easy to operate, low in cost and suitable for large-scale industrial production. 本发明提供了一种用于金属冶炼的石墨材料，所述石墨基体表面复合有热解炭涂层。本发明提供的具有抗氧化涂层的石墨材料，热解碳抗氧化涂层均匀致密，并与石墨本体材料结合牢固，结合力强，难以脱落，不含有非碳元素，大大提高了石墨材料在高温工况条件下的服役寿命，具有抗氧化性能良好、使用寿命长等优点。本发明还提供了一种在石墨表面制备抗氧化涂层的方法，工艺简单、易操作以及