Hot Sale for White Aluminum Powder - Micro Sodium White Fused Alumina – Yufa
Hot Sale for White Aluminum Powder - Micro Sodium White Fused Alumina – Yufa Detail:
Compared With β-Al2O3 And α-Al2O3
Sodium oxide is a harmful impurity to white corundum. It forms β-Al2O3 with alumina in the molten state, and the amount of production increases with the increase of sodium oxide content. Na2O in white corundum mainly appears in the form of Na2O·11AL2O3 (β-Al2O3). For example, if the alumina raw material contains more than 0.6% sodium oxide, the white corundum produced with it will contain more than 10% β-Al2O3.
Compared with β-Al2O3, α-Al2O3 has ‘three highs’. First, it has a high melting point, Secondly a high density, and thirdly a high hardness, as shown in the following table:
| Phase | Chemical compositions | Crystal System | Density (g/cm3） | Micro hardness (Kg/mm²) | Melting point (℃) |
| α-Al2O3 | Al2O3 | Hexagonal | 4.0 | 2300 | 2050 |
| β-Al2O3 | Na2O·11Al2O3 | Trigonal | 3.24 | 1300~1600 | 1600 |
Chemical Composition
| Chemical Composition | Na2O % ≤ | Al2O3 % ≥ | SiO2 % ≤ | Fe2O3 % ≤ |
| Gurantee Value | 0.06 | 99.7 | 0.1 | 0.05 |
| Typical Value | 0.02 | 99.89 | 0.04 | 0.03 |
Advantages
The micro-sodium white fused alumina improves the melting point, particle density, bulk density, flexural strength, compressive strength, true density, hardness and other properties of white corundum products, laying a solid foundation for the product to enter the high-end market.
Applications
It is suitable for processing alloy steel, high hardness steel, high carbon steel and other materials with high hardness and high tensile strength.
Product detail pictures:
Related Product Guide:
Dependable good quality and very good credit score standing are our principles, which will help us at a top-ranking position. Adhering towards the tenet of "quality initial, shopper supreme" for Hot Sale for White Aluminum Powder - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Atlanta, Botswana, Morocco, Good quality and reasonable price have brought us stable customers and high reputation. Providing 'Quality Products, Excellent Service, Competitive Prices and Prompt Delivery', we are now looking forward to even greater cooperation with overseas customers based on mutual benefits. We will work whole-heartedly to improve our products and services. We also promise to work jointly with business partners to elevate our cooperation to a higher level and share success together. Warmly welcome you to visit our factory sincerely.
By Dora from Uzbekistan - 2018.06.19 10:42
With a positive attitude of "regard the market, regard the custom, regard the science", the company works actively to do research and development. Hope we have a future business relationships and achieving mutual success.
By Brook from Cape Town - 2018.09.29 17:23
