Hot-zone in Sapphire Grower

As the hardest of all oxide crystals, Sapphire(Al2O3) has a combination of optical and physical properties that make it the best choice for a variety of demanding applications. It has good thermal properties, excellent electrical and dielectric properties and is resistant to chemical attack. Sapphire maintains its strength even at high temperatures. These properties encourage the use of Sapphire as the LED substrate in aggressive environments where reliability, optical transmission and strength are required. With the tremendous growth of the LED TV and LED lighting market, there is an increasingly strong demand for sapphire used as the LED substrate.

The common methods of sapphire crystal growing: • Czochralski Method: Pull from the melt. • Kyropoulos Method: Dip and turn. • EFG Method (Edge Defined Film-fed Growth): Pull through die. • Heat Exchange Method, HEM method • Vertical Horizontal Gradient Freezing (VHGF), Korea Sapphire Technology Company technology • ES2-GSA method: USA Rubicon Technology Inc. technology.

For more information, please visit http://www.samaterials.com/thermal-spraying-material/1376-aluminum-oxide-alumina-al2o3-for-thermal-spraying.html

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