silicon carbide ceramics

emery silicon carbide ceramic bearing plate nozzle

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Silicon Carbide Ceramics

Silicon carbide mainly has two crystal structures, namely cubic β-SiC and hexagonal-SiC. The basic structural unit of a silicon carbide crystal is a SiC and CSi tetrahedron interpenetrated with each other. The tetrahedrons form a planar layer together and form a three-dimensional structure by connecting the vertices to the next laminated tetrahedron. Hundreds of variants have been discovered due to the different order in which the tetrahedral stacking order can be formed. Generally, the letters C (cubic), H (hexagonal), and R (Rhombic) meters are used to indicate the lattice type, and the number of layers included in the unit cell is used to distinguish, for example, nH indicates that there are n layers of repetition along the c-axis. The hexagonal crystal structure, and mR represents a rhombohedral structure having a m-layer repetition period along the c-axis.

Properties:

 has excellent mechanical properties, excellent oxidation resistance, high abrasion resistance and low friction coefficient. The disadvantage of SiC ceramics is that the fracture toughness is low, that is, the brittleness is large. For this reason, composite ceramics based on SiC ceramics, such as fiber (or whisker) reinforcement, heterogeneous particle dispersion strengthening, and gradient functional materials appear one after another. Improves the toughness and strength of the monomer material.

Application:

The original application of SiC is widely used in the machining industry due to its super-hardness properties, which can be used for grinding wheels, abrasive cloths, sandpaper and various abrasives. It was also discovered in the Second World War as a reducing agent and heating element in steel making, which promoted the rapid development of SiC. SiC ceramics have been widely used in petroleum, chemical, microelectronics, automotive, aerospace, aerospace, paper, laser, mining and atomic energy industries. Silicon carbide has been widely used in high temperature bearings, bulletproof plates, nozzles, high temperature corrosion resistant parts. And in the field of electronic equipment parts in the high temperature and high frequency range.

Company Information:

Shenzhen Hard Precision Ceramic CO.,Ltd founded in 2007, located in Shenzhen of China. We are a company that integrates development, design, molding, sintering, production and sales of precision ceramic products. After 10 years of development, we have cooperated with more than 2000 customers and 60 universities; Our factory covers an area of 2000 square meters, 50 employees, and annual production value of nearly 20 million. We have a higher visibility and better reputation in the same industry.Our products include ceramic rods, tubes, plates, blocks and precision parts for industrial. We have all-line high precision equipments from ceramic forming, sintering to precision machining. Hope for a wide range of sincere cooperation with customers at home and abroad.

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