OEM/ODM China White Corundum Oxide - Micro Sodium White Fused Alumina – Yufa
OEM/ODM China White Corundum Oxide - 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 |
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.
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 |
Product detail pictures:
Related Product Guide:
Our well-equipped facilities and excellent quality control throughout all stages of production enables us to guarantee total customer satisfaction for OEM/ODM China White Corundum Oxide - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Guinea, Miami, Italy, Our products are exported worldwide. Our customers are always satisfied with our reliable quality, customer-oriented services and competitive prices. Our mission is "to continue to earn your loyalty by dedicating our efforts to the constant improvement of our items and services in order to ensure the satisfaction of our end-users, customers, employees, suppliers and the worldwide communities in which we cooperate".
By Jill from Czech republic - 2017.09.30 16:36
Managers are visionary, they have the idea of "mutual benefits, continuous improvement and innovation", we have a pleasant conversation and Cooperation.
By Laura from Rotterdam - 2017.03.07 13:42
