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Nanometer High-purity Alumina
1. Molecular Formula: Al2O3 [cas:1344-28-1]
2. Properties:
The product is white powder, odorless, water insoluble, granularity uniform, sintering easy. It is the important material for the fine ceramics, such as the kinetic energy ceramics, structural ceramics, and optical ceramics, etc.. The fine ceramics which the nanometer high-purity alumina is produced by has the characteristics as semiconductivity, piezoelectricity, ferroelectricity, magnetic, corrosion resistance, biological adaptation, and radiation resistance etc., and it also is a thermally stable material.
Specific Density: γ- Al2O3 3.40~3.90; α- Al2O3 3.90~4.00
3. Applications:
High purity alumina has numerous applications, such as the primary material and standard reagent for the polishing abrasive, man-made tooth and bone, tape, tube, monocrystal, jewel, sapphire, manufacture of high density ceramic substrate for electronic, cutting tool, thread guide, translucent ceramic tube for high-pressure sodium vapor lamp, infrared and ultraviolet window, lens, bearing, prism, pivot, rolling machine, wave guide, nozzle, laser component, precision gauge, pressure sensor, solar cell, air optical device, fine mortar, analytical crucible, etc.
 - Nanometer high-purity alumina is also widely used in the industries like the top-grade catalyst carrier, surface coating, special paper, coating and special ceramics, etc.
4. Specification:
Type
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High purity alumina ( α type ) |
Nanometer high-purity alumina ( γ type ) |
Testing Method |
Al2O3(% ) ≥ |
99.99 |
99.99 |
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Impurity Elements Contents
(ppm) |
Si |
15 |
10 |
FAAS
|
Na |
15 |
5 |
Mg |
10 |
10 |
Ca |
10 |
5 |
Fe |
10 |
15 |
Cu |
5 |
5 |
Mean grain size ( dv50 ) |
1-10 ( μm ) |
≤ 200nm |
Laser Particle Size Analyzer |
Specific Area (m2/g ) |
10-20 |
≥ 180 |
BET |
Pore Volume (cm3/g ) |
-- |
≥ 0.8 |
Pore size(nm) |
-- |
5-20 |
5. Packing:
High purity alumina (α-type) packs in 500g plastic drum or 20-30kg paper drum; Nanometer high-purity alumina ( γ- type) packs in 3kg paper carton, all packaging lining plastic film.
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