In the field of new material research and development, silicon boron carbon nitride (SiBCN) materials have become a coveted "treasure" for researchers due to their excellent properties such as high-temperature resistance and oxidation resistance. Recently, China's research team has made significant progress in the preparation technology of SiBCN materials, laying a solid foundation for their large-scale application.

Currently, the mainstream preparation methods for SiBCN materials include the precursor conversion method, self-propagating high-temperature synthesis (SHS), and chemical vapor deposition (CVD). The precursor conversion method involves the molecular design of organic precursors to polymerize silicon, boron, carbon, and nitrogen elements, which are then pyrolyzed to form a ceramic phase. This method allows for flexible preparation of fibers, coatings, and complex components but suffers from significant volume shrinkage during pyrolysis. The research team has successfully reduced the shrinkage rate by 15% by introducing nano-fillers and optimizing the pyrolysis process, significantly improving the material's forming accuracy.

The SHS method utilizes the exothermic effect of raw material chemical reactions to rapidly prepare ceramic powders. This technology boasts high efficiency and low cost, making it suitable for large-scale production. On the other hand, the CVD method enables precise deposition of ultra-thin coatings on substrates, providing an ideal solution for the preparation of microelectronic devices and oxidation-resistant coatings.

According to experts involved in the research, the future development of SiBCN material preparation technology will focus on atomic-level precise control, composite multifunctional integration, and the development of green processes. Through molecular design and in-situ characterization techniques, precise control over the elemental distribution and microstructure of the materials will be achieved. Simultaneously, low-energy-consumption and low-pollution preparation routes will be explored to facilitate the transition of SiBCN materials from the laboratory to industrial applications.

With continuous breakthroughs in preparation technology, SiBCN materials are expected to play a more significant role in fields such as aerospace and new energy, injecting new impetus into the development of China's high-end manufacturing industry.

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