Method for synthesizing SiC nanowire toughened multilayer structure SiC-C/C composite material

Abstract

The invention relates to a method for synthesizing an SiC nanowire toughened multilayer structure SiC-C/C composite material, which adopts a sol-gel process for synthesizing the SiC nanowire toughened multilayer structure SiC-C/C composite material in situ. The sol-gel process (Sol-gel) is a method for preparing a molecular or even nanometer substructure material by taking an inorganic matter or metal alkoxide as a precursor and sintering and curing with sol and gel. According to the invention, an SiC phase matrix and an SiC nanowire are synthesized in situ in a carbon felt by the sol-gel process, and crack energy is consumed through deflection of cracks due to a complex phase interface and through actions of extraction, abhesion, bridging and the like of the nanowire, thereby promoting the integral mechanical properties of the material, and simultaneously reinforcing the oxidation resistance and ablation resistance of the material by using the characteristic of the SiC phase. The preparation method is simple, pollution-free and low in cost, obviously promotes the integral mechanical properties, ablation resistance and abrasion resistance of the C/C composite material, can be applied to other fiber reinforced composites, and has good economic benefit and social benefit.

Description

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AI Technical Summary

Benefits of technology

This patented describes an improved way to make ceramics that resist damage from heat without losing their strength when exposed to high temperatures during use. These improvements include making them stronger with better insulation against fire hazards, reducing weight but maintaining its integrity over time, enhancing durability under extreme conditions such as those caused by radiation exposure, corrosion, etc., increasing efficiency at power production processes like gas turbines, engines, generators, pumps, compressor stations, vehicles, space exploration tools, military equipment, nuclear reactors, and defense systems.

Problems solved by technology

This patented technical problem addressed in this patents relates to modifying ceramic or polymer compositions containing cathode ray tubes (CRT) that exhibit improved physical strength, reduced weight loss during use due to increased surface area exposed to higher temperatures than usual. Current modifications made from chemical vapor deposition techniques like Chemical Vapour Deposited (CVI), sputter coating processes, etc., result in decreased durability and limited functionality of these types of coatings compared to more advanced technologies.

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