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Brown Fused Alumina Wholesale Suppliers Mexico

When the ZrO2 content is 42.6% and the brown fused alumina temperature is 1710 ℃, it is the eutectic point of Al2O3 and ZrO2. When the temperature of the arc fused alumina cools down to the liquidus of the corresponding components, a-Al2O3 begins to precipitate, and the components of the liquid phase change along the liquidus to the eutectic point with the decrease of temperature.


Brown Fused Alumina Wholesale Mexico MOQ: 1 Ton! 19 Years Experience Brown Fused Alumina Supplier, 35,000m² Workshop Area, Free Samples, Fast Delivery!


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The main mineral phase of zircon corundum is a-Al2O3 and Al2O3 ZrO2 eutectic. The black corundum melting point of Al2O3 is 2050 ℃, and that of ZrO2 is 2690 ℃. When the temperature reaches the eutectic point, the liquid phase disappears and becomes alo-zro2 eutectic. In order to ensure the quality of green carborundum, in addition to adding microcrystalline accelerant and using quench technology to promote its microcrystallization, desilication is also needed in smelting.


In brown aluminum oxide, a large amount of SiO2 will lead to the increase of mullite, aluminum metasilicate, glass and other brittle materials, which will affect the toughness and strength of abrasive. The temperature of desilication is about 2000 ℃, reducing atmosphere. Corundum crystallization mainly studies the influence of crystallization temperature range and impurities on the melt. The key condition of the microstructure of black oxide aluminum is the cooling rate. 


When the melt is quenched, the growth of a-Al2O3 crystal is inhibited, pink corundum which makes the ZrO2-Al2O3 eutectic uniformly distributed on the a-Al2O3 grain boundary with microcrystalline structure. The results show that the cooling rate increases from 12 ~ 20 ℃ / mm to 1000 ~ 2000 ℃ / mm, the initial crystal size of silicon carbide companies decreases from 300 ~ 400um to 10 ~ 30um, and the number of eutectic increases.


In the three systems of alotio2, Al2O3-MgO and al2o-alls, the brown aluminium oxide components with TiO2, MgO and als of 2.5% were selected as the representatives of brown corundum, microcrystalline corundum and single crystal corundum. The melt containing 2.5% TiO2 began to crystallize from 2030 ℃. With the decrease of temperature, the fused alumina crystal continuously precipitates and the content of TiO2 in the melt increases.


Cooling to 1850 ℃, the melt gradually solidified. Therefore, the crystallization temperature range of silicon carbide price is 2030 ℃ - 1850 ℃ = 180 ℃. The crystallization process is relatively stable. The melt containing 2.5% MgO began to solidify from 1950 ℃ to 1925 ℃. The crystallization temperature range of glass beads supplier is very narrow, which is 1950 ℃ - 1925 ℃ = 25 ℃. Therefore, MgO is often used as additive of microcrystalline corundum.


The melt containing 2.5% albs began to crystallize from 2000 ℃, cooled to 1000 ℃ and solidified completely. The white alumina crystallization temperature range of corundum is up to 1000 ℃. Therefore, the crystallization process of single crystal corundum is the most stable, and corundum crystal can grow completely. The impurities in the garnet suppliers have an effect on the growth of corundum crystal. All kinds of impurities consume alo.


white aluminium oxide
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Brown Fused Alumina And White Fused Alumina MOQ: 1 Ton! 19 Years Manufacturing Exprience, 35,000m² Workshop Area, Factory Price, Free Samples, Fast Delivery!

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