Hubei Zhengchuang products fully introduce nano-scale β-SiC

Release Time:

2017-06-07 16:25

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Hubei Zhengchuang New Materials is a comprehensive enterprise specializing in the research, development, manufacturing, and sales of SIC ceramics. Over the past decade, through efficient development, it has rapidly established three production lines with different processes: casting, extrusion, and dry pressing. Its products cover various fields nationwide, including kilns, energy and power, machinery manufacturing, grinding, military industry, and civilian use. While developing rapidly, Hubei Zhengchuang places great emphasis on cooperation with major universities and has established long-term good relationships with Huazhong University of Science and Technology, Wuhan University of Technology, Wuhan University of Science and Technology, among others, to jointly carry out technical research and application work on SIC ceramic products. After three

　　While developing rapidly, Hubei Langchi places great emphasis on cooperation with major universities and has established long-term good relationships with Huazhong University of Science and Technology, Wuhan University of Technology, Wuhan University of Science and Technology, among others, to jointly carry out the technical research and application of SIC ceramic products. After more than three years of effort, Hubei Langchi has completed the development of nano-scale β-SiC powder synthesized by the self-propagating high-temperature synthesis method and has fully introduced this raw material into various product series.

　　Currently, the vast majority of SIC ceramic products sold domestically use ordinary α-SiC powder materials. β-SiC belongs to the cubic crystal system, similar to the diamond structure. Compared to the ordinary α-SiC's hexagonal crystal structure, it has higher chemical stability, a lower thermal expansion coefficient (4.4×10⁻⁶ K⁻¹), higher thermal conductivity (6.28-9.63 W·m⁻¹·K⁻¹), higher hardness (Mohs hardness can reach above 9.5), stronger cutting force, and higher grinding efficiency. β-SiC also has superior sintering performance compared to α-SiC, and the finer the powder, the higher the sintering activity. Additionally, β-SiC has good wave absorption properties, making it an excellent wave-absorbing material. Adding some β-SiC to SIC ceramic products can significantly improve the product's density and various physical properties. Nano-scale β-SiC can more uniformly fill the gaps in the product, promoting the sintering of SIC ceramic products and increasing their density, bulk density, and hardness.

　　Currently, Hubei Zhengchuang introduces nano β-SiC powder raw materials directly into products by adding them. Tests show that grinding barrels with added nano β-SiC powder have improved wear resistance and strength by 10-20% compared to the original. We are now working on manufacturing products with in-situ generated nano β-SiC, directly generating β-SiC in situ during the sintering process through product formulation technology to improve product performance and enhance cost-effectiveness. This also addresses issues in the market caused by pores and cracks from pure α-SiC reaction sintering and the layering and unstable quality of barrels produced by isostatic pressing.

　　At the end of the article, we thank our valued customers for their support of Hubei Langchi. We will persistently promote product technology and quality work, repaying our corporate customers with high-quality products and stable quality.

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