Professional China White Fused Aluminum Oxide - Micro Sodium White Fused Alumina – Yufa
Professional China White Fused Aluminum 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 |
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:
"Control the standard by the details, show the power by quality". Our organization has strived to establish a highly efficient and stable employees team and explored an effective high-quality command method for Professional China White Fused Aluminum Oxide - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Philippines, Slovakia, Swiss, Since its foundation , the company keeps living up to the belief of "honest selling , best quality , people-orientation and benefits to customers. " We're doing everything to supply our customers with best services and best solutions . We promise that we are going to be responsible all the way to the end once our services begin.
By Jean from Lahore - 2018.11.22 12:28
A nice supplier in this industry, after a detail and careful discussion, we reached a consensus agreement. Hope that we cooperate smoothly.
By Elma from Georgia - 2018.12.25 12:43