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Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof

    Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers
     
    Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers
    • Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers
    • Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers
    • Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers
    • Buy cheap Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof from wholesalers

    Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof

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    Brand Name : SILIAN
    Model Number : Customized
    Certification : SGS/ ISO
    Price : Negotiable
    Payment Terms : Western Union, MoneyGram, T/T
    Supply Ability : 20,000 pcs/month
    Delivery Time : 5-8 weeks
    • Product Details
    • Company Profile

    Round Scratch Resistant Sapphire Crystal Glass , Sapphire Glass Scratch Proof

    Size can be customized round scratch-resistant synthetic sapphire crystal


    Description


    Synthetic sapphire is made of bauxite (a type of aluminum oxide), which is mixed with oxygen and hydrogen to bring the material to a melting point of 2050°C. It takes about 15 hours to form sticks (crystalline aluminum) like "corundum". Then the stone is fired again at a high temperature of 1800°C to ensure the stability of the material. Then, the corundum-like material is cut with a very thin diamond polishing blade, and the crystal is cut into thin slices with a diameter of no more than 0.02 mm. The machine can be processed, and then the surface is polished to the required standard thickness, and then the high and low surfaces are processed. After polishing, it can be made into an arc or semicircular crystal surface.


    Specification


    propertySapphire
    Density3.98g/cm³
    Hardness9(mohs)
    Melting2053℃
    Refractive Index1.762~1.770
    Light Transmission≥85℃
    Dielectric Permeabillty9.4@300kat A axis~
    11.58@300kat Caxis
    Thermal Capacity0.10(cal/℃)
    Thermal Conductivity46.04@0℃ 25.12@100℃
    12.56@400℃(W/(m.k))
    Coefficient of Thermal Expansion6.7x10-6/℃ parallel to Caxis
    5.0x10-6/℃ perpendicular to C axis
    Crystal StructureHexagonal System
    a=4.76A c=12.99A
    Purity>99.996%

    Regional smelting method—Synthesis principle


    The crystalline material is first sintered or pressed into a rod shape, and it is rotated and lowered to the heater, the rod material is melted, and the melting zone is in a floating state, thereby obtaining a purified or recrystallized single crystal.
    Features: The crystals produced by the regional smelting method have very high clarity, and it is difficult to see obvious identification features. This method is very costly and is mainly used to produce materials for scientific and technological purposes.



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