Main academic achievements, innovations and scientific significance
1. It pioneered a new process of ammonolysis inorganic sol-gel, which simplifies the process of preparing non-oxide ceramic nanopowders and composite ultrafine powders, and the cost is less than half of the organic sol-gel method. This technology was used to successfully prepare SiC, Si3N4, Ti(C,N) non-oxide ceramic nanopowders and SiC nanowhiskers.
2. Through material design methods, high-temperature sol technology and in-situ controlled crystallization technology, a new technology for preparing nanoceramics using natural minerals and industrial waste residues as main raw materials was obtained. This technology creates a new method for preparing ceramics without using nanopowders, which can fundamentally overcome difficult scientific and engineering problems such as compositional inhomogeneity, residual pores, and grain growth during high-temperature sintering in ceramic materials, and enable The process flow is shortened, production efficiency is improved, and preparation costs are significantly reduced. An invention patent has been applied for.
3. In the study of high-temperature tribology of ceramic materials, the phenomenon of "high-temperature self-lubrication" was discovered for the first time, and the design principles of high-temperature self-lubricating and wear-resistant ceramics were proposed.
4. By combining in-situ reaction synthesis and hot-pressing sintering technology, C-SiC-TiC-TiB2 composite materials with excellent mechanical properties and oxidation resistance were prepared. This process of combining in-situ synthesis with hot-pressing sintering at high temperatures provides a new approach and experimental data for the low-cost preparation of ceramic composites. Published more than 100 papers.