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Reaction-sintered silicon carbide, silicon carbide nozzles, radiation tubes, burners, heat-exchange tubes, silicon carbide furnace tubes, burners, silicon carbide plates
A preparation method and process for reaction-sintered silicon carbide
Release time:
2021-12-25
As science and technology continue to advance, the demands on materials in fields such as sealing and armored industries are becoming increasingly stringent. Reaction-sintered silicon carbide Due to their outstanding high-temperature strength, wear resistance, corrosion resistance, as well as excellent electrical and thermal conductivity, there is an urgent need to develop new high-performance materials. These materials are widely used in many industries, including aerospace, machinery, and automotive, and also serve as critical materials in the military sector. So, let’s now take a closer look at the preparation method and process for reaction-sintered silicon carbide!
Reaction-sintered silicon carbide refers to a material whose composition includes silicon carbide and carbon powder. The typical manufacturing process involves mixing silicon carbide powder, carbon powder, and an organic binder. During the reaction process, carbon and silicon react to form a new silicon carbide phase, which combines with the original silicon carbide to create a silicon carbide composite material. The material is then shaped, dried, debound, and subjected to post-infiltration treatment. Due to the need for stamping and forming during the manufacturing process, this method suffers from low production efficiency and high costs.
Key elements for the realization of reaction-sintered silicon carbide technology:
The objective of the present invention is to provide a manufacturing method for reaction-sintered silicon carbide that does not require stamping, thereby saving manufacturing time and reducing production costs.
To achieve the above-mentioned objectives of the present invention, the present invention employs the following technical means.
The present invention provides a process comprising the following steps: Reaction-sintered silicon carbide The manufacturing method:
1) Preparation of silicon particles;
2) Add the mixture to the process, then uniformly mix and stir it with silicon particles, carbon powder, and an organic binder to obtain a homogeneous blend.
3) Place the mixture obtained in the previous step onto a silicon carbide blank, and carry out the reaction at high temperature to obtain the above-mentioned reaction-sintered silicon carbide.
In the above-mentioned manufacturing method for reaction-sintered silicon carbide, as a preferred embodiment, boron nitride, an organic binder, and water are mixed and stirred until uniformly blended. Silicon and carbon black are then added to the mixture, stirred thoroughly to ensure uniform blending, and subsequently dried.
Reaction-sintered silicon carbide It is a crystal composed of nitrogen and boron atoms. Boron nitride exhibits excellent resistance to chemical corrosion and is not attacked by inorganic acids or water. However, in strongly alkaline solutions at high temperatures, the boron-nitrogen bonds can be broken. With a chemical composition of 43.6% boron and 56.4% nitrogen, boron nitride exists in four distinct polymorphic forms: hexagonal boron nitride, rhombohedral boron nitride, cubic boron nitride, and wurtzite boron nitride.
Carbon black is an amorphous form of carbon—a lightweight, fluffy, and extremely fine black powder. Depending on the production process used to manufacture carbon black, its surface chemistry can vary significantly. Due to its large surface area, carbon black readily adsorbs moisture from the surrounding environment under conditions of insufficient air supply. Particular attention should be paid to moisture absorption during transportation, storage, and use.
The above is an introduction to the preparation method and process for reaction-sintered silicon carbide. If you’d like to learn more, feel free to contact us anytime!
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