What are the functions and uses of silicon carbide, and what are the uses of silicon carbide?

Uses of silicon carbide:

1. The use in the field of semiconductors.

Silicon carbide one-dimensional nanomaterials are generally considered to be an important component of the third generation of wide-bandgap semiconductor materials because of their microscopic tracing and crystal structure, which have more unique excellent functions and more extensive application prospects.

2. The use in the photovoltaic field.

Photovoltaic inverter is very important to the effect of photovoltaic power generation, not only has the function of direct communication and replacement, but also has the function of maximizing the function of solar cells and the function of system fault maintenance.

3. Use in the field of aviation.

Silicon carbide is manufactured into silicon carbide fiber, which is mainly used as high-temperature resistant materials and reinforcement materials, and high-temperature resistant materials include thermal shielding materials, high-temperature resistant conveyor belts, filter cloths for filtering high-temperature gases or molten metals, etc.

Properties of silicon carbide:

Stable chemical properties, high thermal conductivity, low coefficient of thermal expansion, good wear resistance, high thermal conductivity, high collapse electric field strength and high maximum current density.

Silicon carbide has a very high hardness, Mohs hardness, second only to the world's hardest diamond (grade 10), has excellent thermal conductivity, is a semiconductor, and can resist oxidation at high temperatures.

Silicon carbide has at least 70 crystalline forms. Due to its specific gravity and high sublimation temperature (about 2700C), it will not melt at any pressure that can be reached, and it has a fairly low chemical activity.

Uses of silicon carbide: There are four main application fields of silicon carbide, namely: functional ceramics, advanced refractories, abrasives and metallurgical raw materials.

As an abrasive, it can be used to make abrasives, such as grinding wheels, oil stones, grinding heads, sand tiles, etc.

As a metallurgical deoxidizer and high-temperature resistant material.

High-purity single crystal, which can be used to make semiconductors and silicon carbide fibers.

Silicon carbide. There are four main applications: abrasives, refractories, functional ceramics and metallurgical raw materials.

1.Abrasive. Due to its high hardness, chemical stability and certain toughness, silicon carbide abrasive is a very versatile abrasive, which can be used to make grinding wheels, oil stones, coated abrasives, etc.

It is mainly used to grind non-metallic materials such as glass, ceramics, stone, cast iron and some non-ferrous metals, and has poor reactivity with these materials.

2.Refractories. Silicon carbide refractories have excellent high-temperature properties such as high strength, high thermal conductivity, impact resistance, oxidation resistance, wear resistance, and corrosion resistance. It is widely used in metallurgy, energy, chemical and other industries.

3.Ceramics. Silicon carbide ceramics are a kind of high-tech ceramics, silicon carbide ceramics are mainly made of submicron silicon carbide powder. Silicon carbide has a high hardness, and silicon carbide ceramics made with mature technology have good wear resistance, high temperature resistance and corrosion resistance.

4. Metallurgical raw materials. Currently, an important chemical use of silicon carbide is as a purification agent for steelmaking. Silicon carbide decomposes in molten steel, with free oxygen and metal oxides in molten steel.

The reaction produces carbon monoxide.

and silica-containing slag. Silicon carbide is often added to smelting cast iron, so that a small amount of silicon enters the molten iron and promotes the perfection of casting.

Main uses: 3-12 inch monocrystalline silicon, polycrystalline silicon, potassium arsenide, quartz crystal and other wire cutting. Solar photovoltaic industry, semiconductor industry, piezoelectric crystal industry engineering processing materials.

It is used in semiconductors, lightning rods, circuit components, high-temperature applications, UV light detectors, structural materials, astronomy, disc brakes, clutches, diesel particulate filters, filament pyrometers, ceramic films, cutting tools, heating elements, nuclear fuels, jewelry, steel, protective gear, catalyst bearers, and more.

Silicon carbide, silicon carbide. The use of the use. Silicon carbide, what is it used for, what are it, what are the ghosts of conversation, what are there. Silicon.

Uses of silicon carbide:

1. The use of abrasives.

It is mainly used for grinding and polishing grinding wheels, sandpaper, abrasive belts, oil stones, grinding blocks, grinding heads, grinding pastes and monocrystalline silicon, polycrystalline silicon in photovoltaic products and piezoelectric crystals in the electronics industry.

2. Chemical use.

It can be used as a deoxidizer for steelmaking and a improver for cast iron structure, and can be used as a raw material for the manufacture of silicon tetrachloride, which is the main raw material for the silicone resin industry. Silicon carbide deoxidizer is a new type of strong composite deoxidizer, which replaces the traditional silicon powder toner for deoxidation, and the physical and chemical properties are more stable than the original process, the deoxidation effect is good, the deoxidation time is shortened, the energy is saved, the steelmaking efficiency is improved, the quality of steel is improved, the consumption of raw and auxiliary materials is reduced, environmental pollution is reduced, the working conditions are improved, and the comprehensive economic benefits of the electric furnace are of great value.

3. Used for wear-resistant, fire-resistant and corrosion-resistant materials.

Using silicon carbide has the characteristics of corrosion resistance, high temperature resistance, high strength, good thermal conductivity, impact resistance, etc., silicon carbide can be used in various smelting furnace linings, high-temperature furnace components, silicon carbide plates, liners, supports, saggers, silicon carbide crucibles, etc. On the other hand, it can be used for high-temperature indirect heating materials in the non-ferrous metal smelting industry, such as vertical tank distillation furnaces, rectification furnace trays, aluminum electrolytic cells, copper melting furnace linings, arc plates for zinc powder furnaces, thermocouple protection tubes, etc.; It is used to make wear-resistant, corrosion-resistant, high-temperature resistant and other high-grade silicon carbide ceramic materials; It can also be made into rocket nozzles, gas turbine blades, etc. In addition, silicon carbide is also one of the ideal materials for highways, aviation runways, etc.

Black silicon carbide is mainly used in functional ceramics, refractory materials, abrasives and metallurgical raw materials. Silicon carbide has stable chemical properties, high thermal conductivity, small coefficient of thermal expansion, and good wear resistanceIn addition to being used as an abrasive, there are many other uses, such as: coating silicon carbide powder in the turbine impeller or cylinder body by a special process, which can improve its wear resistance and extend the service life by 1 2 times; The high-grade refractory material made of it is resistant to thermal shock, small in size, light in weight and high in strength, and has good energy-saving effect.

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Abrasives: Foreign light industry black silicon carbide is mainly used as abrasives. The process of black silicon carbide storage is high position and certain toughness, mostly used for grinding optical glass, cemented carbide, titanium alloy and bearing steel grinding and polishing, high-speed steel tool grinding, etc.; Black silicon carbide is mostly used to cut and grind materials with low tensile strength.

Micronized abrasives are specially used for superfinishing grinding of bearings (materials) and are characterized by high grinding frequency and fineness.

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Refractory material: Black silicon carbide is very good thermal shock resistance, so it is a high-quality refractory material. According to the consumption of products, the Mingqing process is not the same, and it can be divided into dividend-recrystallized black silicon carbide, products, high-temperature hot-pressed products, and products with silicon nitride or clay as the binding agent.

The main products and uses are: high-temperature furnace components, supports.

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Metallurgical industry: in addition to being used for various smelting furnace linings, it is also used as a steelmaking deoxidizer, cast iron structure improver, etc. The requirements for the chemical elements of the separating agent black black silicon carbide are:

Compared with the traditional steelmaking process of aborting evacuation and deoxidation with coke and silicon powder, the use of detaching agent has the advantages of storing positive steel and good resting environment.

Other categories: electrical industry, black silicon carbide materials are also widely used as electric heating elements, high-temperature semi-superconductor materials, far infrared panels, lightning arrester valve materials, etc.

Emery, also known as silicon carbide, includes black silicon carbide and green silicon carbide, wherein: black silicon carbide is made of quartz sand, petroleum coke and high-quality silica as the main raw materials, and is smelted at high temperature through a resistance furnace. Its hardness is between corundum and diamond, its mechanical strength is higher than that of corundum, and it is brittle and sharp.

Green silicon carbide is made of petroleum coke and high-quality silica as the main raw materials, adding salt as additives, and smelting at high temperature through a resistance furnace. The hardness of the trouser leak is between corundum and diamond, and the mechanical strength is higher than that of corundum. So what are the main uses of silicon carbide?

1. Abrasives - mainly because silicon carbide has high hardness, chemical stability and certain toughness, so silicon carbide can be used to manufacture consolidated abrasives, coated abrasives and free grinding, so as to process glass, ceramics, stone, cast iron and some non-ferrous metals, cemented carbide, titanium alloy, high-speed steel tools and grinding wheels.

2. The --- of refractory materials and corrosion-resistant materials is mainly because silicon carbide has a high melting point (decomposition degree), chemical inertness and thermal vibration resistance, so the carbide early trapped silicon can be used for abrasives, ceramic products in the firing furnace of shed plates and sagger, zinc smelting industrial vertical cylinder distillation furnace for silicon carbide bricks, aluminum electrolytic cell lining, crucibles, small furnaces and other silicon carbide ceramic products.

3. Chemical use - because silicon carbide can be decomposed in molten molten steel and react with oxygen and metal oxides in molten steel to form carbon monoxide and silicon-containing slag. Therefore, it can be used as a purification agent for smelting steel, that is, as a deoxidizer for steelmaking and a microstructure improver for cast iron. This generally uses low-purity silicon carbide to reduce costs.

At the same time, it can also be used as a raw material for the manufacture of silicon tetrachloride.

4. Electrical use - used as heating element, nonlinear resistance element and high semiconductor material. Heating elements such as silicon carbon rods (suitable for all kinds of electric furnaces working in 1100 and 1500), nonlinear resistive elements, and various lightning protection valves.

Let's take a look at the existence of black silicon carbide and what are the uses of wild search dates! These silicon carbides have many other uses due to their stable chemical properties and high thermal conductivity, and they are used as abrasives

The main black carbonization is used for functional ceramic cavities, refractories, abrasives and metallurgical raw materials. Due to its stable chemical properties, high thermal conductivity, small coefficient of thermal expansion and good wear resistance, silicon carbide has many other uses in addition to being used as an abrasive, such as: coating silicon carbide powder in the turbine impeller or cylinder body with a special process, which can improve its wear resistance and extend the service life by 1 2 times; The high-grade refractory material made of it is resistant to thermal shock, small in size, light in weight and high in strength, and has good energy-saving effect.

Silicon carbide has three main functions.

1. Silicon carbide is mainly used in functional ceramics, high-grade refractory materials, abrasives and metallurgical raw materials.

2. As an abrasive, it can be used to make abrasives, such as grinding wheels, oil stones, grinding heads, sand tiles, etc.

3. As a metallurgical deoxidizer and high-temperature resistant material, high-purity single crystal can be used to manufacture semiconductors and fabricate shielded silicon carbide fibers.

In study, work or life, we have written essays, must be familiar with all kinds of silicon carbide, silicon carbide is a rare mineral in nature, there are black silicon carbide and green silicon carbide two commonly used base varieties, the following is for everyone to popularize the use of silicon carbide, welcome to share.

Abrasives are mainly used for grinding and polishing grinding wheels, sandpaper, abrasive belts, oil stones, grinding blocks, grinding heads, grinding pastes and monocrystalline silicon, polycrystalline silicon in photovoltaic products and piezoelectric crystals in the electronics industry.

Chemical industry can be used as a deoxidizer for steelmaking and a structural improver for cast iron, and can be used as a raw material for the manufacture of silicon tetrachloride, which is the main raw material for the silicone resin industry. Silicon carbide deoxidizer is a new type of strong composite deoxidizer, which replaces the traditional silicon powder toner for deoxidation, and the physical and chemical properties are more stable than the original process, the deoxidation effect is good, the deoxidation time is shortened, the energy is saved, the steelmaking efficiency is improved, the quality of steel is improved, the consumption of raw and auxiliary materials is reduced, environmental pollution is reduced, the working conditions are improved, and the comprehensive economic benefits of the electric furnace are of great value.

Three-resistant"On the one hand, silicon carbide can be used in various smelting furnace linings, high-temperature furnace components, silicon carbide plates, liners, supports, saggers, silicon carbide crucibles, etc. On the other hand, it can be used for high-temperature indirect heating materials in the non-ferrous metal smelting industry, such as vertical tank distillation furnaces, rectification furnace trays, aluminum electrolytic cells, copper melting furnace linings, arc plates for zinc powder furnaces, thermocouple protection tubes, etc.; It is used to make wear-resistant, corrosion-resistant, high-temperature resistant and other high-grade silicon carbide ceramic materials; It can also be made into rocket nozzles, gas turbine blades, etc. In addition, silicon carbide is also one of the ideal materials for solar water heaters on highways, aviation runways, etc.

Non-ferrous metals use silicon carbide with high temperature resistance, high strength, good thermal conductivity, impact resistance, and are used as high-temperature indirect heating materials, such as hard tank distillation furnaces, rectification furnace trays, aluminum electrolytic cells, copper melting furnace linings, arc plates for zinc powder furnaces, thermocouple protection tubes, etc.

The hardness of metallurgical beneficiation silicon carbide is second only to diamond, and it has strong wear resistance, and is an ideal material for wear-resistant pipes, impellers, pump chambers, cyclones, and bucket linings, and its wear resistance is cast iron. 5-20 times the service life of rubber & def is also one of the ideal materials for aviation flight runways.

Silicon carbide is commonly used as an abrasive because of its high hardness. It is often used in the manufacture of grinding wheels, cutting tools and sanding paper. Silicon carbide abrasives are generally less expensive than other abrasives of similar quality. Abrasives are used to grind materials such as steel, aluminum, cast iron, and rubber.