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Tabular alumina powder

The tabular alumina powder takes the imported industrial alumina powder as the main material. Through special processing, grain growth direction is controlled by high temperature, the particles appears the unique plate-like structure, mohs hardness is up to 9 degree, it has the strong grinding force, not easy to produce scratches.

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The tabular alumina powder takes the imported industrial alumina powder as the main material. Through special processing, grain growth direction is controlled by high temperature, the particles appears the unique plate-like structure, mohs hardness is up to 9 degree, it has the strong grinding force, not easy to produce scratches.

Properties

  • Product Status:
  • White Powder
  • Hardness:
  • 2100kg/mm2
  • Molecular Weight:
  • 102
  • Melting Point:
  • 2010℃-2050 ℃
  • Boiling Point:
  • 2980℃
  • Water Soluble:
  • Insoluble In Water
  • density:
  • 3.0-3.2g/cm3
  • Relative Density:
  • /
  • Average Particle Size:
  • /
  • Content:
  • 99.7%

Advantages

  • Compare with other tabular powder, the tabular alumina powder has the excellent combination properties. Such as high melting point, strong hardness, high mechanical strength, good wear resistance, chemical resistance, oxidation resistance and heat resistance etc.
  • Flat sheet shape makes the friction bigger, improves grinding speed and efficiency, this can reduce the number of grinding machines, labor and grinding time.
  • Flat sheet shape makes the object grind not easy to scratched, the rate of qualified products can increase 10%-15%. For example, the rate of qualified semiconductor silicon wafer can achieve to 96% or more.
  • Has the double effects of nano and micro powders, the surface activity is moderate, not only can effectively combine with other active groups, but also not easy to agglomerate and facilitate effective dispersion.
  • Has good adhesion, significant shielding effect and ability to reflect light.
  • The tabular alumina powder is almost transparent, colorless, and has a flat and smooth surface. The well-crystallized crystals are regular hexagons.
  • The tabular alumina powder can be made into excellent polishing powder.

Application

  • 01

    Polishing powder for high-precision electronic materials, grinding and polishing for monocrystalline silicon wafers, piezoelectric quartz crystals, and compound semiconductors.

  • 02

    As the filler to increase thermal conductivity of polymer.

  • 03

    As the reinforcer for improving fracture toughness of ceramics.

  • 04

    Pearlescent pigment substrate that is better than mica.

  • 05

    Additives for cosmetics.

Tabular alumina powder specifications

Grains(μm) Grain distribution Packing(kg)
D0 D3 D50 D94
45 ＜82.9 53.4±3.2 34.9±2.3 22.8±1.8 20
40 ＜77.8 41.8±2.8 29.7±2.0 19.0±1.0 20
35 ＜64.0 37.6±2.2 25.5±1.7 16.0±1.0 20
30 ＜50.8 30.2±2.1 20.8±1.5 14.5±1.1 20
25 ＜40.3 26.3±1.9 17.4±1.3 10.4±0.8 20
20 ＜32.0 22.5±1.6 14.2±1.1 9.00±0.80 20
15 ＜25.4 16.0±1.2 10.2±0.8 6.30±0.50 20
12 ＜20.2 12.8±1.0 8.20±0.60 4.90±0.50 20
9 ＜16.0 9.70±0.80 6.40±0.50 3.60±0.30 20
5 ＜12.7 7.20±0.60 4.70±0.40 2.80±0.25 20
3 ＜10.1 5.20±0.40 3.10±0.30 1.80±0.30 20
2 ＜8.5 4.20±0.30 2.50±0.30 0.90±0.20 20
1 ＜5.5 3.50±0.30 1.50±0.30 0.30±0.30 20

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