XAXY Ceramic Composite Material Technology Group was established in 2010, a high-tech enterprise focusing on the research and development, production and marketing of high-performance ceramic matrix composite materials and structural parts.
The company`s core technology comes from Academician Zhang Litong of the Chinese Academy of Sciences, the first prize of China’s National Technological Invention Project “High-temperature resistant, long-life, anti-oxidation ceramic matrix composites and their application technology”
XAXY is a national-level high-tech enterprise, and now has academician workstations and post-doctoral workstations.
In March 2013, with the approval of the National Development and Reform Commission, XAXY led the establishment of the National Engineering Research Center for Ceramic Matrix Composite Manufacturing Technology. The company also undertook the National Development and Reform Commission, the Ministry of Finance, and the Ministry of Industry and Information Technology jointly approved the National Strategic Emerging Industry New Material Development and Industrialization Special Project “Industrialization and technical research of high-performance SiC ceramic-based composite materials in the field of brakes and aero-engines. “Industrial transformation and upgrading projects approved by the Ministry of Industry and Information Technology.
At present, the company is providing technology research and development and testing services for enterprises or research institutes in many fields, and is responsible for the development of a variety of special ceramic-based composite components in China, covering high thrust ratio aero engines, high performance aerospace engines, and aerospace engines. Some of the thermal protection systems for spacecraft, aircraft and ground transportation brake systems, nuclear power plants, gas power plants, and deep space detectors have been produced in small batches and equipped for application.
Products
1. C/SiC ceramic composite aircraft brake disc
Carbon ceramic brake discs are a new generation of aircraft brake materials after carbon carbon brake discs. The carbon-ceramic aircraft brake disc has good strength and toughness, high static friction coefficient and low wet attenuation, which solves the problems of serious wet friction performance attenuation and low static friction coefficient of carbon/carbon aircraft brake discs. The production cycle is reduced by 2/3 compared to carbon/carbon, the production cost is reduced by 1/3, and the energy consumption is reduced by 2/3, which is very competitive. Compared with C/C, C/SiC brake discs (commonly known as carbon-ceramic brake discs) have short cycle, low cost, high strength, high static friction coefficient, and basic dynamic and static friction coefficient under wet/salt fog compared with C/C. Significant advantages such as no attenuation.
2. CC-C/SiC ceramic composite civil brake pads
(1) High-end car brake products:
Compared with the traditional powder metallurgy (1st generation) brake disc, the weight of C/C-SiC composite brake disc is reduced by about 50%. The brake response speed is fast and the brake attenuation is low, the thermal stability is good, and there is no thermal vibration. It feels extremely comfortable, has improved handling and high wear resistance.
(2) Civil heavy truck brake products:
C/C-SiC composite brake pads avoid the metal clamor of friction between traditional metal brake pads and the mating parts (ie brake pads and brake discs). At the same time, when the temperature of the brake disc reaches 650°C, the carbon-ceramic brake pads The friction coefficient is still around 0.30~0.55, which can ensure the vehicle has good braking performance.
C/SiC composite thermal field structure in the field of photovoltaic/electronic equipment
In the field of photovoltaics and electronics, C/SiC can be used to manufacture heating and thermal insulation components produced by crystalline materials, such as crucibles, cured thermal insulation felts, heaters, U-shaped heating elements, heat shields, etc., which can effectively increase the service life of components , Expand production capacity, and help reduce costs.
Satellite optical mechanism structure products
In the space field, C/SiC can be used for ultra-light structure mirror frames and mirror substrates. It has the advantages of small weight, high strength, low expansion coefficient and resistance to environmental radiation. It is expected to solve the Difficult problem in lightweight and dimensional stability of large space mirrors.
Aeroengine structural parts
In aero-engines, CMC-SiC materials are mainly used for hot-end parts, such as nozzles, combustion chambers, turbines and blades, etc., which can increase the working temperature by 150~350℃ and reduce the weight of the structure by 30%~70%. It is a development One of the key thermal structural materials for aero engines with a thrust-to-weight ratio of 10 or more.
Aerospace engine structural parts
In the field of aerospace engines, high specific impulse liquid rocket engines mainly use C/SiC thrust chambers and nozzles, which can significantly reduce weight, increase thrust chamber pressure and life, while reducing the amount of regenerative coolant, and realize the miniaturization and lightness of the orbital kinetic energy interception system. Quantify. The solid rocket motor mainly uses C/SiC as the throat plug and throat valve of the air flow channel to solve the problem of zero ablation of the throat of the controllable solid orbital engine and improve the orbital change ability and maneuverability of the kinetic energy interception system. In terms of ramjet engines, C/SiC can be used in the combustion chamber and nozzle throat lining of sub-combustion ramjet engines to improve oxidation resistance and ablation performance and engine working life, to ensure the aircraft’s long range, and has entered the application stage. For scramjet engines, C/SiC can be used for supporting plates and inlaid panels.
C/SiC composite thermal protection structural parts
Regarding the thermal protection system of hypersonic aircraft, with the rapid development of hypersonic aircraft, the thermal protection system has developed from “heat protection-structure” separation to “heat protection/structure integration”, from single ceramic heat protection to ceramic composite Material structure or metal cover structure development. The use of C/SiC as a large-area thermal protection system can reduce weight by 50% compared to metal TPS, and can improve safety through high-temperature life extension design, reduce launch preparation procedures, reduce maintenance, increase service life and reduce costs.