SUOYI is a factory production boron nitride powder

SUOYI is a factory production boron nitride powder.

Bronze nitride has achieved significant research breakthroughs in fundamental properties, mechanical properties, preparation processes, and industrial applications. Controlled synthesis and composite formation are also current core research directions.

1. Fundamental Properties Research: 1-12 layer atomically thin hexagonal boron nitride is an indirect bandgap semiconductor. Layers 1-3 show no band-edge emission signal, while layers 4 and above exhibit phonon-assisted band-edge emission signals that increase with increasing layer number, providing crucial theoretical support for its application in deep ultraviolet light-emitting devices.

2. Mechanical Property Breakthrough: For the first time, deformation twinning plastic deformation of cubic boron nitride was activated at room temperature. By applying pressure along a specific direction to reduce the critical shear stress, a "continuous shear" twinning mechanism was discovered. Cubic boron nitride submicron pillars optimized using this mechanism exhibit a fracture strain rate 55 times that of bulk single crystals and a strength exceeding 92 GPa, providing a new paradigm for optimizing the performance of superhard materials.

3. Preparation and Industrialization Achievements: Through optimized CVD processes, high-density pyrolytic boron nitride materials with a purity of 6N were prepared. The impurity content of the produced boron nitride crucibles is <0.1ppm, significantly reducing the dislocation density of the crystals. These crucibles can be reused more than 50 times, and complex-shaped products such as 8-inch wafer crucibles can be customized.

4. Core Research Directions: First, low-cost, controllable synthesis, exploring microwave-assisted and plasma-enhanced synthesis methods; second, liquid environment phase transition research to reduce the temperature and pressure conditions for cubic boron nitride preparation; third, composite applications, developing boron nitride nanotubes or composites with carbon fibers, aiming to create high thermal conductivity, lightweight materials suitable for chip heat dissipation, aero-engine coatings, and other applications.