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Technology bonding for sapphires units

Special Design and Technology Bureau with Pilot Production ISP NASU
Volodymyr Maslov

Wares of sapphire of ZAT "Tehnocristal"

Cementing and without cementing processes of precision units of optic-electronic devices which work in the wide range of temperatures.
In the course of project:

• Adherence of glues and solders is improved by means previous causing of vacuum coating.
• Technology of chemical treatment of surface is developed to the sapphire for deleting of the layer broken by mechanical operation.
• The composite structure of «glass-sapphire» (porthole «Sapphire»). Firmness portholes to influencing of dust is developed, hardness and durability of construction is advanced in 2 times in comparison with glass portholes.

     
Microstructure of the sapphire before chemical treatment.    Microstructure of the sapphire after chemical treatment.