▎ 摘　　要

NOVELTY - Preparation of boron carbide nanowire based on sodium chloride shape regulator involves adding a boron source, a carbon source and sodium chloride to a high-speed mixer to mix evenly to obtain a raw material powder, placing the raw material powder in a graphite crucible, placing in a high-temperature sintering furnace with argon as a protective atmosphere, heating to 900-2000°C, reacting at 900-2000℃ under argon atmosphere for 0.5-10 hours, cooling to room temperature to obtain a pre-product, cleaning the pre-product to remove impurities, placing the cleaned pre-product in an alumina crucible, placing it in a muffle furnace, heating up to 400-1000°C, incubating at 400-1000℃ for 5-180 minutes to remove carbon, finally taking out the carbon-removed product and cooling to room temperature. The atomic ratio of boron atoms in the boron source and carbon atoms in the carbon source is (2-10):1. The molar ratio of sodium chloride and carbon source is (0.001-0.3):1. USE - Preparation of boron carbide nanowire used for lightweight protective armor, aerospace application, cutting tool, and nuclear energy application. ADVANTAGE - The method produces boron carbide nanowire with high yield (more than 80%) and high purity (higher than 95%), by non-toxic and harmless technique process, using low raw material price and uniform shape.