Core Viewpoint - The successful completion of the project on in-situ modified XX continuous silicon carbide fibers by Hunan Boxiang New Materials Co., Ltd. marks a significant advancement in the aerospace new materials sector, enabling the development of high-temperature resistant composite materials for aviation engines [1][2]. Group 1: Project and Material Development - The project led by Hunan Boxiang's subsidiary, Hunan Zerui New Materials Co., Ltd., passed expert evaluation, confirming that the new material Zelramic-iBN silicon carbide fiber meets extreme performance requirements for aviation engine composite materials [1][2]. - Zelramic-iBN fiber shows significant improvements in high-temperature resistance and creep resistance compared to the previous generation Zelramic fiber, making it suitable for new aviation engines and gas turbine applications [1][3]. Group 2: Technical Specifications - Key performance indicators for Zelramic-iBN fiber include a single fiber tensile strength of ≥2.5 GPa, a linear density of 90±10 Tex, and a density of 3.05±0.1 g/cm³ [2][3]. - The in-situ generated BN coating on Zelramic-iBN fibers enhances environmental erosion resistance and high-temperature creep resistance, with a significant increase in performance metrics at temperatures above 1300°C [3][4]. Group 3: Company Background - Hunan Boxiang New Materials Co., Ltd. was established in November 2010 and focuses on the research, production, and sales of silicon carbide fibers and composite materials, positioning itself as a leader in the field in China [5][6]. - Hunan Zerui New Materials Co., Ltd. is the only high-tech enterprise in China that has achieved the industrialization of silicon carbide fibers through doping methods, with a fully autonomous production line [5][6].

Core Insights - The research project on "in-situ modified continuous silicon carbide fiber high-temperature performance" led by Hunan Boxiang New Materials Co., Ltd. has successfully passed expert group acceptance, marking a significant breakthrough in China's aerospace new materials sector [1][5] - The newly developed Zelramic-iBN silicon carbide fiber meets the extreme performance requirements for aerospace engine composite materials, indicating a milestone in the application of new aerospace engine materials under extreme service conditions [1][5] Company Overview - Hunan Boxiang New Materials Co., Ltd. was established in November 2010, with its R&D headquarters located in Changsha National High-tech Zone, focusing on the research, production, and sales of silicon carbide fibers, PMI foams, absorbing materials, and various composite materials [5] - The subsidiary, Hunan Zerui New Materials Co., Ltd., is the only high-tech enterprise in China that has achieved the industrialization of silicon carbide fibers through a doping route [5] Material Performance - The Zelramic-iBN fiber shows significant improvements in high-temperature resistance and creep resistance compared to the previous generation Zelramic fiber, pushing the long-term service temperature under extreme conditions to new heights [1][5] - The in-situ generated BN coating on the surface of Zelramic-iBN fibers, measuring 50–80 nm, significantly enhances environmental erosion resistance and high-temperature creep resistance, opening new possibilities for improving the temperature rating of silicon carbide fiber-reinforced ceramic matrix composites [5] Application Potential - Zelramic-iBN fibers can be applied not only in civil aircraft engine high-temperature components but also in aerospace, gas turbines, hypersonic vehicle thermal protection systems, and photovoltaic thermal field materials, indicating substantial promotional value [1][5]