99.8% Fused Alumina/White Fused Alumina Spray Powder 600-700 Mesh Sodium Content <0.1%
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- Address:Songshan Road, Zip: 450000
- Contact: 陳經(jīng)理
- Tel:13526538098
- Email:panchen@hxabrasive.com
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99.8% Fused Alumina/White Corundum Spray Powder 600-700 Mesh Sodium Content <0.1%
High-purity low-sodium white fused alumina micropowder has a sodium oxide content below 0.1%, with very low silicon-iron impurity content. It is processed from high-purity electrically fused white fused alumina through crushing, chemical treatment, water washing and overflow, sedimentation, and drying. The crystal phase alpha conversion rate of high-purity low-sodium white fused alumina is over 97%, with higher specific gravity than medium-sodium white fused alumina, high bulk density, low porosity, high refractory stability, strong high-temperature hardness, low thermal shrinkage and expansion, and excellent thermal stability. It can be used not only in traditional grinding tools, abrasives, and wear-resistant applications but also in advanced alumina ceramics, high-temperature coatings, precision casting, and other industries.
99.8% Fused Alumina/White Corundum Spray Powder 600-700 Mesh Sodium Content <0.1% Features:
1. High bulk density, good compactness, low porosity.
2. High corundum phase content, high hardness, excellent high-temperature strength.
3. High refractory temperature, strong high-temperature stability.
4. Low high-temperature thermal expansion coefficient, strong volume stability.
5. Good chemical stability, resistant to acid and alkali corrosion.
6. High particle concentration uniformity, even particle size, good fluidity.
7. Neutral pH, low electrical conductivity.
Typical Chemical Indicators of High-Purity Low-Sodium White Fused Alumina Micropowder:
Chemical Composition | Percentage |
|---|---|
Alumina Al2O3 | 99.6160% |
Silicon Dioxide SiO2 | 0.1188% |
Iron Oxide Fe2O3 | 0.0223% |
Calcium Oxide CaO | 0.0210% |
MgO | 0.0060% |
K2O | 0.0010% |
Na2O | 0.0314% |
TiO2 | 0.0018% |
P2O5 | 0.0015% |
Cr2O3 | 0.0002% |
ZnO | 0.0001% |
V2O5 | 0.0001% |
Typical Physical Indicators of High-Purity Low-Sodium White Fused Alumina Micropowder
Color | White |
|---|---|
Hardness | Mohs 9.0 |
Service Temperature | 1900 ℃ |
Melting Point | 2250 ℃ |
Specific Gravity | 3.95g/cm3 |
Bulk Density | 3.9-3.95 g/cm3 |
Crystal Shape | Multi-angular |
Production Specifications:
JIS Particle Size | D0 (μm) | D3 (μm) | D50 (μm) | D94 (μm) |
|---|---|---|---|---|
#240 | ≤ 127 | ≤ 103 | 57.0±3.0 | ≥ 40 |
#280 | ≤ 112 | ≤ 87 | 48.0±3.0 | ≥ 33 |
#320 | ≤ 98 | ≤ 74 | 40.0±2.5 | ≥ 27 |
#360 | ≤ 86 | ≤ 66 | 35.0±2.0 | ≥ 23 |
#400 | ≤ 75 | ≤ 58 | 30.0±2.0 | ≥ 20 |
#500 | ≤ 63 | ≤ 50 | 25.0±2.0 | ≥ 16 |
#600 | ≤ 53 | ≤ 41 | 20.0±1.5 | ≥ 13 |
#700 | ≤ 45 | ≤ 37 | 17.0±1.5 | ≥ 11 |
#800 | ≤ 38 | ≤ 31 | 14.0±1.0 | ≥ 9.0 |
#1000 | ≤ 32 | ≤ 27 | 11.5.±1.0 | ≥ 7.0 |
#1200 | ≤ 27 | ≤ 23 | 9.5±0.8 | ≥ 5.5 |
#1500 | ≤ 23 | ≤ 20 | 8.0±0.6 | ≥ 4.5 |
#2000 | ≤ 19 | ≤ 17 | 6.7±0.6 | ≥ 4.0 |
#2500 | ≤ 16 | ≤ 14 | 5.5±0.5 | ≥ 3.0 |
#3000 | ≤ 13 | ≤ 11 | 4.0±0.5 | ≥ 2.0 |
#4000 | ≤ 11 | ≤ 8.0 | 3.0±0.4 | ≥ 1.8 |
Main Applications of High-Purity Low-Sodium White Fused Alumina Micropowder:
High-temperature thermal spray materials.
High-quality ceramic grinding wheels.
Insulating powder for electronic ceramic sintering bedding.
Refractory materials such as linings, castables, etc.
Raw material for high-end alumina ceramics like water filtration alumina ceramic membrane tubes.
Shell making and slurry addition in precision casting such as investment casting, replacing zircon sand to reduce casting costs.
| Industry Category: | Metallurgy & Minerals/Mineral Resources/Corundum |
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