Does boron carbide reference material need baking?

No, boron carbide is generally made of boric acid, borax or boric anhydride, which is mixed with carbon raw materials in an electric arc furnace and heated to above 2 100℃ for production. Boronic anhydride or boric acid begins to melt and volatilize near 500℃, and reacts with carbon above 1200℃ to generate boron dioxide, which is also volatile. Thermodynamic calculation shows that boron anhydride can react with carbon at 1550℃ to produce boron carbide, but at this temperature, the speed is very slow, so the reaction is generally above 2 100℃.