As soft bulletproof clothing at home and abroad can only protect low-speed bullets, high-speed bullets or some steel core bullets fired from rifles can only be resisted by inserting hard shields at key positions based on soft bulletproof clothing. At present, only ceramic composite boards among the hard guard boards meet the requirements of everyone in terms of weight, performance and price. Silicon carbide ceramics have strong oxidation resistance, good wear resistance, high hardness, good thermal stability, high high temperature strength, small coefficient of thermal expansion, high thermal conductivity, thermal shock resistance and chemical corrosion resistance, and are favored by everyone and widely used.

Hardness and toughness of silicon carbide

The hardness of SiC is quite high, reaching 9.2-9.3 Mohs at 20 ℃, which is one of the hardest materials and can be used to cut rubies; The compressive strength is 224MPa, and the bending strength is 15.5MPa; Its thermal conductivity is higher than that of copper, which is 3 times that of Si and 8-10 times that of GaAs. It has high thermal stability and cannot be melted under normal pressure.

Thermal Properties of SiC

SiC is synthesized at high temperature, and most of its products are prepared or used at high temperature. If only rough calculation is made, the average thermal expansion coefficient of silicon carbide can be 4.4 within the range of 25~1400 ℃ × 10-6/℃。 The measurement results of the thermal expansion coefficient of SiC show that its value is much smaller than that of other abrasives and high temperature materials. For example, the thermal expansion coefficient of corundum can be as high as (7~8) × 10-6/℃。 The thermal conductivity of SiC is very high, which is another important feature of SiC physical properties. Its thermal conductivity is much larger than that of other refractories and abrasives, about 4 times that of corundum. Therefore, the low thermal expansion coefficient and high thermal conductivity of SiC make its products subject to less thermal stress during heating and cooling, which is the reason why SiC ceramics have particularly good thermal shock resistance.

SiC Supplier

RBOSCHCO is a trusted global chemical material supplier&manufacturer with over 12-year-experience in providing super high-quality chemicals and nanomaterials. The company export to many countries including the USA, Canada, Europe, UAE, South Africa, Tanzania, Kenya, Egypt, Nigeria, Cameroon, Uganda, Turkey, Mexico, Azerbaijan, Belgium, Cyprus, Czech Republic, Brazil, Chile, Dubai, Japan, Korea, Vietnam, Thailand, Malaysia, Indonesia, Australia, Germany, France, Italy, Portugal, etc.

As a leading nanotechnology development manufacturer, RBOSCHCO dominates the market. Our professional work team provides perfect solutions to help improve the efficiency of various industries, create value, and easily cope with various challenges.

If you are looking for SiC， please send an email. (sales1@rboschco.com)

tags: semiconductor semiconductor material