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Bonding of sapphire to sapphire by eutectic mixture of aluminum oxide and zirconium oxideAn element comprising sapphire, ruby or blue sapphire can be bonded 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.
Document ID
19790016972
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Deluca, J. J.
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
September 4, 2013
Publication Date
May 22, 1979
Subject Category
Composite Materials
Accession Number
79N25143
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-PATENT-4,155,475|NASA-CASE-GSC-11577-3|US-PATENT-3,859,714
Patent Application
US-PATENT-APPL-SN-645502|US-PATENT-APPL-SN-322997|US-PATENT-APPL-SN-506803
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