2021 Latest Design White Fused Alumina Grits - Micro Sodium White Fused Alumina – Yufa
2021 Latest Design White Fused Alumina Grits - 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:
With our leading technology at the same time as our spirit of innovation,mutual cooperation, benefits and advancement, we will build a prosperous future with each other with your esteemed firm for 2021 Latest Design White Fused Alumina Grits - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: United Arab emirates, Vietnam, Benin, We'll supply much better products with diversified designs and expert services. We sincerely welcome friends from over the world to visit our company and cooperate with us on the basis of long-term and mutual benefits.
By Matthew from Kuwait - 2017.12.19 11:10
The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
By Elizabeth from Mongolia - 2018.09.29 17:23
