Low-sodium alumina low-sodium white fused alumina for high-temperature spray powder wear-resistant coatings, 40μm, 30μm, 20μm
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- Contact: 陈经理
- Tel:13526538098
- Email:panchen@hxabrasive.com
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Low-Sodium Alumina, Low-Sodium White Fused Alumina for High-Temperature Spray Powder Wear-Resistant Coatings in 40μm, 30μm, 20μm
High-purity low-sodium white fused alumina micropowder has a sodium oxide content of less than 0.1% and very low silicon-iron impurity content. It is produced from high-purity electrically fused white fused alumina through processes such as crushing, chemical treatment, water washing and overflow, sedimentation, and drying. The alpha-phase conversion rate of high-purity low-sodium white fused alumina is over 97%, with a 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.
Features of Low-Sodium Alumina, Low-Sodium White Fused Alumina for High-Temperature Spray Powder Wear-Resistant Coatings in 40μm, 30μm, 20μm:
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 coefficient of thermal expansion at high temperatures, strong volume stability.
5. Good chemical stability, resistant to acid and alkali corrosion.
6. High particle concentration, uniform 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% |
Silica 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 | 3.95 g/cm³ |
Bulk Density | 3.9-3.95 g/cm³ |
Crystal Shape | Multi-angular |
Production Specifications:
JIS Grain 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.
Refractory materials such as linings and castables.
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 | Hardware |
|---|---|
| Product Category | |
| Brand: | 海旭磨料 |
| Spec: | 40um30um20um |
| Stock: | 200 |
| Manufacturer: | |
| Origin: | China / Henan / Zhengzhoushi |
