Molybdenum alloy surface anti-oxidation coating as well as preparation method and application thereof

The invention discloses a molybdenum alloy surface anti-oxidation coating and a preparation method and application thereof.The preparation method comprises the steps that firstly, high-temperature-resistant oxidation powder is prepared, then a solution containing polyvinyl alcohol and vinyl trisilane is prepared, the powder and the solution are mixed, and slurry is formed after uniform stirring and mixing; grinding and polishing the surface of the molybdenum alloy material by using abrasive paper; the surface of a pretreated molybdenum alloy material is evenly coated with the slurry, then the coating on the surface of the molybdenum alloy material is dried in an electric furnace, heat preservation treatment is carried out, and therefore the uniform and compact high-temperature anti-oxidation coating is obtained. The high-temperature anti-oxidation coating has an excellent anti-oxidation effect and can effectively protect a molybdenum alloy matrix which is irregular in shape and large in size; the method has t