High Purity SiC Raw Powder/SiC Coarse Powder(5N-6N)
PRODUCT DESCRIPTION
High purity silicon carbide powder is a high-performance ceramic material with excellent physical and chemical properties, mainly composed of high purity silicon carbide (SiC). The purity of SiC raw powder 5N-6N is usually 99.999% -99.9999%, with extremely low impurities such as iron, aluminum, and oxygen. The total impurity content should be controlled within the range of 0.001% (10 ppm) to 0.0001% (1 ppm).
Common ones include α - SiC (hexagonal system, such as 4H and 6H types) and β - SiC (cubic system). SiC coarse powder is usually in the α phase and has high stability. The particle size range of SiC coarse powder is 10μm to 100μm, and the product purity of SiC raw powder can reach 5N level (purity ≥ 99.999%).
This material of SiC coarse powder has far exceeded the scope of ordinary industrial abrasives or refractory materials, SiC raw powder is the core basic material for preparing the next generation of high-performance semiconductor devices.
SiC RAW POWDER CHARACTERISTICS
SiC raw powder purity: 99.999% (5N) to 99.9999% (6N)
Particle Size: Typically 10–100 μm (SiC coarse powder range)
Crystal Phase: Predominantly α-SiC (6H or 4H polytypes for electronic applications)
Key Impurities:
Metals (Fe, Al, Ni, Cr): <1 ppm (6N), <5 ppm (5N)
Oygen (O): <50 ppm
Nitrogen (N): <20 ppm
Free Carbon (C): <0.1%
PRODUCT DETAIL
Silicon carbide purity ：99.999% (5N) to 99.9999% (6N).
High purity SiC raw powder is a key foundational material for high-end manufacturing, and with the development of industries such as new energy and 5G, demand continues to grow.
In the semiconductor industry, it is used as the source material for growing silicon carbide single crystal ingots by physical vapor transfer (PVT) method. The powder sublimates at high temperature, is transported to the seed crystal for recrystallization, and grows into a single crystal ingot for making a wafer. In addition to the high hardness, high thermal conductivity, and thermal shock resistance of silicon carbide itself, the core characteristic of 5N-6N high-purity powder is only one: extreme purity.
5N-6N high-purity silicon carbide powder is the pearl at the top of the semiconductor industry pyramid. It is no longer a simple "powder", but a cutting-edge functional material that requires extreme purity, precise crystal structure, and strict particle size control. Its preparation is a huge challenge that spans across materials science, chemistry, thermodynamics, and engineering, and plays an important role in the development of future electric vehicles, new energy, and 5G communication technologies.
PACKING
OUR ADVANTAGE
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