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 Compositon | Na2O % ≤ | Al2O3 % ≥ | SiO2 % ≤ | Fe2O3 % ≤ |
| Gurantee Value | 0.06 | 99.7 | 0.1 | 0.05 |
| Typical Value | 0.02 | 99.89 | 0.04 | 0.03 |
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:
Excellent 1st,and Client Supreme is our guideline to deliver the ideal provider to our prospects.Nowadays, we have been seeking our best to become certainly one of the most effective exporters in our discipline to meet shoppers more require 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: Surabaya, Pakistan, Ghana, Our company is an international supplier on this kind of merchandise. We offer an amazing selection of high-quality products. Our goal is to delight you with our distinctive collection of mindful products while providing value and excellent service. Our mission is simple: To provide the best products and service to our customers at the lowest prices possible.
By Lydia from Hongkong - 2018.09.19 18:37
The company can think what our think, the urgency of urgency to act in the interests of our position, can be said this is a responsible company, we had a happy cooperation!
By Frederica from New Orleans - 2017.07.28 15:46
Write your message here and send it to us
