Bonding of sapphire to sapphire by eutectic mixture of aluminum

Details Bonding of sapphire to sapphire by eutectic mixture of aluminum Bonding of sapphire to sapphire by eutectic mixture of aluminum

1975-12-30

1979-05-22

Footland, Lenard A.

Receptacles

Envelope for electric lamp or similar device

With evacuating stem or valve

65 43, 156 89, H01K 136

Patent

active

041554752

ABSTRACT:
Bonding of an element comprising sapphire, ruby or blue sapphire to another element of such material with a eutectic mixture of aluminum oxide and zirconium oxide. The bonding mixture may be applied in the form of a distilled water slurry or by electron beam vapor deposition. In one embodiment the eutectic is formed in situ by applying a layer of zirconium oxide and then heating the assembly to a temperature above the eutectic temperature and below the melting point of the material from which the elements are formed. The formation of a sapphire rubidium maser cell utilizing eutectic bonding is shown.

REFERENCES:
patent: 2533512 (1950-12-01), Samuel
patent: 3267204 (1966-08-01), Peters
patent: 3459569 (1969-08-01), Ellis
patent: 3474277 (1969-10-01), Zollweg
patent: 3508938 (1970-04-01), Jones

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