Silicon Carbide Ceramic

Q:

Silicon carbide, with the chemical formula SiC, is an inorganic substance composed of carbon and silicon

Silicon carbide exists in nature in the form of the mineral mosonite, but this form is extremely rare. Silicon carbide has a very high hardness and is an important abrasive used in the production of refractory materials, such as gold steel sand or refractory sand. In addition, silicon carbide is also a semiconductor material with characteristics of high temperature resistance, high frequency resistance, and high voltage resistance, which make it very useful in power electronic equipment, especially in applications that require efficient energy management, such as new energy, automobiles, photovoltaics, industrial control, and other fields

Q:

Silicon carbide ceramics are ceramic materials made by sintering silicon carbide. Due to its excellent performance and characteristics, it is widely used in various fields. The following are some of the main uses of silicon carbide ceramics, such as braking systems and mechanical components in mechanical engineering, semiconductor devices in electronic engineering, corrosion resistant equipment in chemical engineering, thermal engineering, and other fields, providing important characteristics such as stability, wear resistance, and high-temperature stability for equipment and products

Q:

The crystal structure of silicon carbide ceramics is stable, with very high hardness and tensile strength. Generally speaking, the hardness of silicon carbide ceramics can reach 9-9.5 levels in Mohs hardness, which is much harder than many traditional materials such as metal and glass. Meanwhile, the bending strength of silicon carbide ceramics is also very high, usually between 300-700 MPa.

Q:

Silicon carbide ceramics (SiC) combine various excellent properties, making them excellent in many applications. It has high bending strength, excellent oxidation resistance, good corrosion resistance, high wear resistance, and low friction coefficient. These room temperature mechanical properties, combined with their high-temperature strength, such as creep resistance, enable silicon carbide ceramics to maintain good performance at high temperatures.

The oxidation resistance of silicon carbide ceramics is the best among all non oxide ceramics, and even at high temperatures of 1600 ℃, their high temperature strength is still considerable. In addition, the chemical stability of silicon carbide ceramics is attributed to the formation of a silicon dioxide protective layer on its surface, which is particularly significant in oxidizing environments. Its hardness is very high, with Mohs hardness ranging from 9.2 to 9.6, second only to diamond and boron carbide, making it an important component in abrasives

Q:

Silicon carbide (SiC) is a compound composed of two elements, silicon and carbon, whose crystal is composed of plasma (Si) and carbon (C) atoms uniformly arranged in the lattice structure of a cubic crystal system. Boron carbide (B4C) is a compound composed of two elements, boron and carbon. Its molecule contains four boron atoms and one carbon atom, and the connection between boron atoms is extremely strong

Hardness: Silicon carbide is a high hardness material that can reach above 9.0 in Mohs hardness, while boron carbide has a higher hardness of up to 9.3

Thermal performance: Silicon carbide has extremely high temperature resistance and can withstand temperatures up to 1600 ℃ in air. Boron carbide, on the other hand, is a substance with a higher melting point and can withstand temperatures as high as 2600 ℃

Thermal expansion coefficient: The thermal expansion coefficient of boron carbide is close to zero, so it can be used as a structural material in high-temperature environments. The thermal expansion coefficient of silicon carbide is slightly higher

Wear resistance: Silicon carbide has excellent wear resistance and can be used to manufacture wear-resistant ceramic cutting tools, nozzles, bearings and other parts. Boron carbide has excellent wear resistance due to its extremely high hardness

Q:

Silicon carbide (SiC), as an important high-end ceramic material, has broad application prospects in high-tech fields such as semiconductors, nuclear energy, national defense, and space technology due to its excellent high-temperature resistance, corrosion resistance, wear resistance, high-temperature mechanical properties, and oxidation resistance

In the semiconductor field, silicon carbide ceramic materials are mainly used in key equipment for integrated circuit manufacturing, such as silicon carbide workbenches, guides, reflectors, ceramic suction cups, arms, grinding discs, fixtures, etc. for lithography machines