China Supplier White Fused Alumina Fine Powder - Micro Sodium White Fused Alumina – Yufa
China Supplier White Fused Alumina Fine 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:
With this motto in mind, we have turn out to be amongst probably the most technologically innovative, cost-efficient, and price-competitive manufacturers for China Supplier White Fused Alumina Fine Powder - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Albania, Brunei, Russia, In order to meet our market demands, we have paied more attention to the quality of our products and services. Now we can meet customers' special requirements for special designs. We persistently develop our enterprise spirit "quality lives the enterprise, credit assures cooperation and keep the motto in our minds: customers first.
By Jane from Los Angeles - 2017.08.16 13:39
This supplier offers high quality but low price products, it is really a nice manufacturer and business partner.
By Kay from Amman - 2017.10.23 10:29