| abstract |
The invention discloses a method for preparing nano-twinned boron carbide powder, which relates to the technical field of ultra-fine ceramic powder preparation. After the source, put it into deionized water, stir evenly until it is completely dissolved, and obtain a colorless and transparent solution; (2) put the obtained solution on a heating table and heat it until the solution evaporates to dryness, and grind the obtained lump into powder and collect it (3) Put the powder into a graphite crucible, vacuumize the graphite crucible in a tube furnace or carbon tube furnace, and then heat it. The heating temperature is set to 1000-2000°C, the holding time is 0-180min, and the cooling is performed. Then the nano-twinned boron carbide powder is obtained. The invention reduces the difficulty of preparing the nano boron carbide powder, improves the product purity, improves the yield, low raw material price, simple preparation process, high purity and small particle size of the prepared powder, mild reaction conditions and low heating temperature. |