Boron Nitride Crucible Production Completed
Recently, significant advancements have been made in the production technology of boron nitride crucibles. This innovation not only enhances the crucible's performance but also reduces production costs, bringing revolutionary changes to related industries.
Boron nitride crucibles, as indispensable tools in the chemical industry, play a crucial role. Crucibles are cup-shaped containers used to hold liquids or solids for high-temperature heating, serving as the foundation for smooth chemical reactions. Boron nitride crucibles, due to their excellent thermal shock resistance, corrosion resistance, lubricity, high-temperature insulation, and inertness at high temperatures, have widespread applications in fields such as semiconductor manufacturing, aerospace, and optical components.
Traditional boron nitride crucible preparation primarily relies on the chemical vapor deposition (CVD) method. In this process, a mold made of dense, high-temperature-resistant materials like graphite, shaped like the crucible, is placed in a CVD chamber. Under high-temperature conditions, with nitrogen as the diluent and protective gas, gases containing nitrogen-hydrogen compounds and halogen compounds are introduced into the furnace. Through specific reaction conditions, pyrolytic boron nitride is deposited onto the mold. However, this preparation process has issues with mold size reduction due to polishing, increasing costs.
To address this issue, a new preparation process for pyrolytic boron nitride crucibles has emerged. This new process operates under conditions of 20-400 Pa pressure and a working temperature of 1450-1850°C. It first applies a 5-30-micron-thick pyrolytic graphite coating to the mold surface and then deposits pyrolytic boron nitride. This method not only improves production efficiency but also significantly extends the crucible's lifespan.
Boron nitride crucibles have a wide range of applications, particularly in the semiconductor manufacturing industry, where demand continues to grow. Pyrolytic boron nitride, as an advanced inorganic non-metallic material, boasts high hardness, mechanical strength, purity, low friction coefficient, high temperature resistance, and excellent electrical insulation. In semiconductor manufacturing, boron nitride crucibles can be used as diffusion barriers and insulating layers for semiconductor devices and for manufacturing semiconductor crucibles. With the rapid development of the global semiconductor industry, the market demand for boron nitride crucibles will continue to increase.
It is worth mentioning that advancements in boron nitride crucible production technology have not only been significant in China but have also garnered global attention. According to the latest market research reports, the global market size for pyrolytic boron nitride is growing annually and is expected to maintain a stable growth trend in the coming years. As one of the important producers of boron nitride crucibles, China occupies a significant position in the global market in terms of scale and production volume.
The continuous innovation in boron nitride crucible production technology not only improves product quality and performance but also reduces production costs, providing related industries with higher-quality and more efficient production tools.
