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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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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

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.


Product 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

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


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Our mission is to become an innovative supplier of high-tech digital and communication devices by providing value added design, world-class manufacturing, and service capabilities 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: Malaysia, Malaysia, Swedish, We have established long-term, stable and good business relationships with many manufacturers and wholesalers around the world. Currently, we are looking forward to even greater cooperation with overseas customers based on mutual benefits. Please feel free to contact us for more details.
  • We always believe that the details decides the company's product quality, in this respect, the company conform our requirements and the goods are meet our expectations.
    5 Stars By Chris Fountas from Barbados - 2017.06.29 18:55
    We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Ruth from Swedish - 2017.03.07 13:42
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