reaction sintering RB SiC ceramic plate parts

reaction sintering RB SiC ceramic plate parts 

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Silicon Carbide Ceramics

Silicon carbide (SiC) is a compound with strong covalent bond, and its Si--C bond has an ionic form of only about 12%. Therefore, it also has excellent mechanical properties, excellent oxidation resistance, and high abrasion resistance. Low coefficient of friction, etc. The biggest characteristic of silicon carbide is high temperature strength. The strength of ordinary ceramic materials will be significantly reduced at 1200 ~ 1400 degrees Celsius, while the flexural strength of silicon carbide at 1400 degrees Celsius will remain at a high level of 500 ~ 600MPa, so its working temperature can be Up to 1600 ~ 1700 degrees Celsius. In addition, the thermal conductivity of silicon carbide ceramics is also higher, second only to yttria ceramics in ceramics. Therefore, silicon carbide has been widely used in high temperature bearings, bulletproof plates, nozzles, high temperature corrosion resistant parts, and high temperature and high frequency range electrons. Equipment parts and other fields.

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.

Data Sheet ↓

Pressureless Sintering Silicon Carbide Ceramic Properties
Color: Grey Black
Density: 3.10-3.15g/cm3
Silicon Carbide Content: ≥99%
Porosity: ＜0.1%
Poisson's ratio: 0.16
Hardness: ≥92 HRA
Flexural Strength: ≥400 Mpa
Compressive Strength(HV0.5): ≥2600 Mpa
Modulus of Elasticity: 410 Mpa
Maximum Working Temperature: 1600°C
Thermal Conductivity(indoor temperature): 2.5 W/m.K
Thermal Expansion Coefficient: 4 10-6/°C

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.

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