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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


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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

grinding
grinding processing

It is suitable for processing alloy steel, high hardness steel, high carbon steel and other materials with high hardness and high tensile strength.


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China Supplier White Fused Alumina Fine Powder - Micro Sodium White Fused Alumina – Yufa detail pictures

China Supplier White Fused Alumina Fine Powder - Micro Sodium White Fused Alumina – Yufa detail pictures

China Supplier White Fused Alumina Fine Powder - Micro Sodium White Fused Alumina – Yufa detail pictures


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The business keeps to the operation concept "scientific management, premium quality and efficiency primacy, customer supreme 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: Denver, Peru, Luxemburg, Being the top solutions of our factory, our solutions series have been tested and won us experienced authority certifications. For additional parameters and item list details, be sure to click the button to acquire additional nformation.
  • This company conforms to the market requirement and joins in the market competition by its high quality product, this is an enterprise that have Chinese spirit.
    5 Stars By Martha from Iceland - 2018.06.18 19:26
    We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
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