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China OEM Alumina Powder - Micro Sodium White Fused Alumina – Yufa

China OEM Alumina Powder - Micro Sodium White Fused Alumina – Yufa


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

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

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


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We normally believe that one's character decides products' quality, the details decides products' high-quality ,while using the REALISTIC,EFFICIENT AND INNOVATIVE staff spirit for China OEM Alumina Powder - Micro Sodium White Fused Alumina – Yufa , The product will supply to all over the world, such as: Romania, Tunisia, moldova, The products has a good reputation with competitive price, unique creation, leading the industry trends. The company insists on the principle of win-win idea, has establishedglobal sales network and after-sales service network.
  • Good quality and fast delivery, it's very nice. Some products have a little bit problem, but the supplier replaced timely, overall, we are satisfied.
    5 Stars By Miranda from Korea - 2017.10.27 12:12
    The sales person is professional and responsible, warm and polite, we had a pleasant conversation and no language barriers on communication.
    5 Stars By Gustave from Toronto - 2017.11.29 11:09
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