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Sic Black Silicon Carbide Abrasive

Black silicon carbide is produced by a reduction fusion of high quality bauxites in electric arc furnaces. It is both a hard and tough material with high strength, making it an excellent abrasive grain for applications.Its thermal properties make it an excellent raw material for refractory applications.

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Black Silicon Carbide

Because of the rarity of natural moissanite, most silicon carbide is synthetic. It is used as an abrasive, and more recently as a semiconductor and diamond simulant of gem quality. The simplest manufacturing process is to combine silica sand and carbon in an Acheson graphite electric resistance furnace at a high temperature, between 1,600 °C (2,910 °F) and 2,500 °C (4,530 °F). Fine SiO2 particles in plant material (e.g. rice husks) can be converted to SiC by heating in the excess carbon from the organic material. The silica fume, which is a byproduct of producing silicon metal and ferrosilicon alloys, also can be converted to SiC by heating with graphite at 1,500 °C (2,730 °F).

Properties

High strength, high hardness, abrasion resistance, preservative, excellent heat conduction.

  • SiC Content:
  • 98%min
  • Maximum service temperature:
  • 1900℃
  • Mohs Hardness:
  • 9.5
  • Specific Gravity:
  • 3.2-3.4g/cm3 min
  • Melting Point:
  • 2250℃

Advantages

  • Good oxidation resistance and chemical stability at high temperatures.
  • High hardness with Mohs 9.2-9.5. Even at 2000℃, it’s still get high strength.
  • Low thermal conductivity. So it can resistant to themal shock.
  • High purity min SiC content is 98.5%.
  • Black silicon carbide grit is washed by water before milling process, so there is few impurities.

Application

  • 01

    As an abrasive, it can be used as a grinding tool, such as grinding wheel,oilstone,grinding head, sand tile, etc.

  • 02

    As a metallurgical deoxidizer andexotic material.

  • 03

    High-purity single crystal, which can be used for manufacturing semiconductors and manufacturingsilicon carbide fiber.

  • 04

    It can be used as deoxidizer for steelmaking and modifier for cast iron structure, and as raw material for manufacturing silicon tetrachloride.

  • 05

    It can be used as high temperature indirect heating material.

  • 06

    Anti-wear lubricants, structural coatings, functional coatings, protective coatings, absorbing materials, stealth materials, etc. in the industrial field

  • 07

    Glass polishing, rubber tires and other rubber products, high-performance brake pads, product anti-wear lubrication, high-hardness wear-resistant powder coatings.

  • 08

    High-performance structural ceramics (such as rocket nozzles, nuclear industry, etc.), which can be used as ceramic knives, cutting tools, measuring tools, molds; special-purpose structural ceramics, functional ceramics, composite ceramics, engineering ceramics.

Specifications

Fraction 0-1mm 1-3mm 3-5mm 5-8mm
Fine F500, F2500, -100mesh -200mesh -320mesh
Grains 8# 10# 12# 14# 16#20# 22# 24# 30# 36# 46# 54# 60# 80# 100# 120# 150# 180# 220#
Micro powder(Standard) W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5 W2.5
JIS 240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000#
FEPA F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500

Chemical Composition (%)

Grit Sic F.C. Fe2O3
F12-F90 ≥98.50 <0.20 ≤0.60
F100-F150 ≥98.00 <0.30 ≤0.80
F180-F220 ≥97.00 <0.30 ≤1.20
F230-F400 ≥96.00 <0.40 ≤1.20
F500-F800 ≥95.00 <0.40 ≤1.20
F1000-F1200 ≥93.00 <0.50 ≤1.20
P12-P90 ≥98.50 <0.20 ≤0.60
P100-P150 ≥98.00 <0.30 ≤0.80
P180-P220 ≥97.00 <0.30 ≤1.20
P230-P500 ≥96.00 <0.40 ≤1.20
P600-P1500 ≥95.00 <0.40 ≤1.20
P2000-P2500 ≥93.00 <0.50 ≤1.20

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