NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
High modulus rare earth and beryllium containing silicate glass compositionsGlass compositions having a Young's modulus of at least 16 million psi and a specific modulus of at least 110 million inches consisting essentially of approximately, by weight, 20 to 43% SiO2, 8 to 21% Al2O3, 4 to 10% BeO, 27 to 58% of at least one oxide selected from a first group consisting of Y2O3, La2O3, Nd2O3, Ce2O3, Ce2O3, and the mixed rare earth oxides, and 3 to 12% of at least one oxide selected from a second group consisting of MgO, ZrO2, ZnO and CaO are described. The molar ratio of BeO to the total content of the first group oxides is from 1.0 to 3.0.
Document ID
19820021579
Acquisition Source
Legacy CDMS
Document Type
Other - Patent
Authors
Bacon, J. F. (United Technologies Corp. East Hartford, Conn., United States)
Date Acquired
September 4, 2013
Publication Date
March 30, 1976
Subject Category
Nonmetallic Materials
Accession Number
82N29455
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
NASA-CASE-HQN-10595-1|US-PATENT-3,947,281
Patent Application
US-PATENT-APPL-SN-874675|US-PATENT-APPL-SN-259056

Related Records

There are no records associated with this record.
No Preview Available