Surface corrosion treatment method of boron carbide product, metallographic specimen and preparation method thereof

The invention relates to a surface corrosion treatment method of a boron carbide product, a boron carbide metallographic specimen and a preparation method of the boron carbide metallographic specimen.The surface corrosion treatment method comprises the steps of enabling the temperature of a to-be-treated boron carbide product to be at a preset temperature, performing corrosion treatment on the to-be-treated boron carbide product for the first preset duration at the first temperature by using a first corrosive agent, wherein the preset temperature is higher than the room temperature and less than the first temperature; cooling the boron carbide product after corrosion treatment, and performing corrosion treatment on the cooled boron carbide product for the second preset duration at the second temperature by using a second corrosive agent, wherein the second preset duration is not less than the first preset duration, the second corrosive agent is different from the first corrosive agent, and the second temperat