Glass-to-metal Seals
Author: J. H. Partridge
Publisher:
Published: 1949
Total Pages: 308
ISBN-13:
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Author: J. H. Partridge
Publisher:
Published: 1949
Total Pages: 308
ISBN-13:
DOWNLOAD EBOOKAuthor: I. W. Donald
Publisher:
Published: 2007
Total Pages: 340
ISBN-13: 9780900682568
DOWNLOAD EBOOKAuthor: Ian W. Donald
Publisher:
Published: 2009
Total Pages: 294
ISBN-13: 9780900682629
DOWNLOAD EBOOKThe primary purpose of this new monograph is to provide a thorough review of glass-to-metal seals, with particular reference to the more recent developments in the scientific, technical and commercial fields. Current applications for glass-to-metal seals are extraordinarily diverse, ranging from the humble, taken-for-granted light bulb to complex aerospace and military components developed within the last few years. New applications also continue to emerge where the unique properties of these systems can be exploited. It is also the purpose of this monograph to highlight new and emerging fields which are benefiting from the application of glass-to-metal seal and related technologies. In this respect, the scope of the monograph has been broadened to include the related topic of glass-to-metal coatings. In addition, the more recent and highly versatile glass-ceramic-to-metal systems are reviewed. Some of the newer ceramic-to-metal, glass-to-glass, glass-to-ceramic and ceramic-to-ceramic systems are also covered.
Author: John Henry Partridge
Publisher:
Published: 1949
Total Pages: 238
ISBN-13:
DOWNLOAD EBOOKAuthor: Larson Electronic Glass, Redwood City, CA, USA.
Publisher:
Published: 2011
Total Pages: 77
ISBN-13:
DOWNLOAD EBOOKAuthor: Wiggin Henry & Company
Publisher:
Published: 195?
Total Pages:
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1979
Total Pages: 51
ISBN-13:
DOWNLOAD EBOOKGlass-to-metal seals on electronic component packages make it possible to obtain electrical feed-thru while maintaining hermeticity throughout severe environmental exposure. As a result of this study, it was determined that sealed sub-assemblies will generally pass the least severe thermal shock requirement of MIL-STD-883, but that the same (previously accepted) lots will exhibit a 6%, or higher, failure rate as a result of manufacturing stresses imposed by cover welding, delidding, and thermal bakes or soaks. During this study, the use of tighter controls on the more critical glass sealing processes was shown to reduce the reject rate to less than 1%. Success in matched glass- seal making depends on the use of three thermal treatments for Kovar: de- carburizing, pre-oxidation and sealing. This report deals specifically with pre- oxidation and sealing. An oxide film on Kovar, prior to sealing, promotes glass wetting and provides for the development of a chemical-mechanical bond at the glass-metal interface. A determination for residual intergranular oxide is useful for judging the quality of a matched glass-to-metal seal where pre- oxidation is a requisite for sealing. Residual oxides can be detected by metallographic techniques, and the range of 2.0 - 6.5 micrometers is appropriate for high quality glass seals. Other effects are also detectable by the evaluation of metallographic cross-sections of sealed packages. These include volume fraction of bubble formation, bubble size, bubble distribution, glas- metal separation and other interface criteria.
Author: John Henry PARTRIDGE
Publisher:
Published: 1949
Total Pages: 238
ISBN-13:
DOWNLOAD EBOOKAuthor: Alexander Roth
Publisher: Springer Science & Business Media
Published: 1994
Total Pages: 868
ISBN-13: 9781563962592
DOWNLOAD EBOOKMarket: Scientists, engineers, and graduate students in vacuum technology. This volume presents numerous techniques developed in the early 1960s for the efficient construction of reliable vacuum seals, and provides critical insights into the design, construction, and assembly of vacuum systems. Extensively researched, this work covers a variety of sealing techniques and design concepts that remain as technologically relevant now as they were nearly three decades ago.
Author: L. D. Haws
Publisher:
Published: 1986
Total Pages: 16
ISBN-13:
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