DOI: 10.1111/j.1151-2916.1944.tb14473.x. PROPERTIES OF SOME VYCOR‐BRAND GLASSES *

PROPERTIES OF SOME VYCOR‐BRAND GLASSES *

10.1111/j.1151-2916.1944.tb14473.x

Crossref journal-article

Wiley

Journal of the American Ceramic Society (311)

Abstract

AbstractPhysical and chemical properties are discussed for Vycor‐brand 96% silica glasses prepared from glasses of lower silica content by a leaching process, and a brief résumé of this process is given. The intermediate porous glass and a translucent or white opaque form of the final 96% silica glass made by the Multiform process are briefly described. Ultraviolet and infrared transmission characteristics of glasses No. 790 and No. 791 are given.SummaryVycor‐brand glass No. 790 containing 96% silica is produced without the use of excessive melting temperatures by a process in which a relatively soft borosilicate glass is melted and shaped, the fluxes are removed by leaching, and the residual porous high‐silica structure is consolidated by heating. The outstanding properties of this glass are its very low coefficient of expansion and correspondingly high resistance to heat shock, its high softening point, low power factor, and high chemical durability, which make it useful for varied applications in the industrial and electrical fields as well as in the laboratory. The glass can be used continuously at temperatures up to 900°C. or for limited service at much higher temperatures provided it is not in contact with materials which react with or cause devitrification of silica. It can be lamp worked by methods similar to those used for fused silica.Porous glass is formed as an intermediate product in the process. It is characterized by pores of very small and relatively uniform radius, the average of which is in the order of 20 a.u.A translucent or opaque white glass is made by the Multiform process, which enables the production of massive ware and a variety of shapes that cannot be made directly in the clear form. Aside from transparency, the properties in general are the same as those of the clear glass.Vycor‐brand glass No. 791 is highly transparent to ultraviolet light at wave lengths down to 254 mμ or less, and glasses have been made with an appreciable transmission even at 185 mμ. Glasses No. 790 and No. 991 are highly transparent to the near infrared.

Bibliography

Nordberg, M. E. (1944). PROPERTIES OF SOME VYCORâBRAND GLASSES *. Journal of the American Ceramic Society, 27(10), 299â305. Portico.

Authors 1

Martin E. Nordberg (first)

References 10 Referenced 187

{'key': 'e_1_2_1_1_2', 'first-page': '1', 'volume-title': 'Advances in Colloid Science, Vol. I', 'author': 'Emmett P. H.', 'year': '1942'} / Advances in Colloid Science, Vol. I by Emmett P. H. (1942)
10.1021/ja01247a001
{'issue': '2', 'key': 'e_1_2_1_3_2', 'first-page': '309', 'article-title': 'Adsorption of Gases in Multimolecular Layers', 'volume': '60', 'author': 'Brunauer S.', 'year': '1938', 'journal-title': 'ibid'} / ibid / Adsorption of Gases in Multimolecular Layers by Brunauer S. (1938)
10.6028/jres.028.021
{'key': 'e_1_2_1_5_2', 'volume-title': 'Presented at the Forty‐Fourth Annual Meeting', 'author': 'Lillie H. R.', 'year': '1942'} / Presented at the Forty‐Fourth Annual Meeting by Lillie H. R. (1942)
10.1111/j.1151-2916.1931.tb16647.x
{'key': 'e_1_2_1_7_2', 'first-page': '97', 'volume-title': 'Properties of Silica', 'author': 'Sosman R. B.', 'year': '1927'} / Properties of Silica by Sosman R. B. (1927)
10.1021/ac50151a028
10.6028/jres.026.037
{'key': 'e_1_2_1_10_2', 'first-page': '131', 'article-title': 'Invar, Elinvar, and Related Iron‐Nickel Alloys', 'volume': '3', 'author': 'Sands J. W.', 'year': '1932', 'journal-title': 'Metals & Alloys'} / Metals & Alloys / Invar, Elinvar, and Related Iron‐Nickel Alloys by Sands J. W. (1932)

Dates

Type	When
Created	19 years, 3 months ago (June 6, 2006, 8:55 a.m.)
Deposited	1 year, 9 months ago (Nov. 23, 2023, 2:14 a.m.)
Indexed	1 month ago (Aug. 2, 2025, 12:56 a.m.)
Issued	80 years, 10 months ago (Nov. 1, 1944)
Published	80 years, 10 months ago (Nov. 1, 1944)
Published Online	19 years, 3 months ago (June 2, 2006)
Published Print	80 years, 10 months ago (Nov. 1, 1944)

Funders 0

None

BibTeX

@article{Nordberg_1944, title={PROPERTIES OF SOME VYCOR‐BRAND GLASSES *}, volume={27}, ISSN={1551-2916}, url={http://dx.doi.org/10.1111/j.1151-2916.1944.tb14473.x}, DOI={10.1111/j.1151-2916.1944.tb14473.x}, number={10}, journal={Journal of the American Ceramic Society}, publisher={Wiley}, author={Nordberg, Martin E.}, year={1944}, month=nov, pages={299–305} }

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