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Crystallization kinetics of a lithia-silica glass - Effect of sample characteristics and thermal analysis measurement techniquesDTA and both isothermal and nonisothermal DSC techniques are presently used to investigate the crystallization kinetics of a 40 (mol) percent Li2O-60 percent SiO2 glass as a function of glass powder particle size, the use of either alumina or Pt as the crucible material, the use of N, O, or Ar atmospheres, and surface pretreatments of the glass powder with deionized water, HCl, or HF. Neither the furnace atmosphere nor the crucible material had a significant effect on activation energy, frequency factor, or Avrami exponent. Washings of the glass with the three different fluids decreased the crystallization temperature by 25 to 30 C.
Document ID
19910038031
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ray, Chandra S.
(Missouri Univ. Rolla, MO, United States)
Huang, Wenhai
(Missouri Univ. Rolla, MO, United States)
Day, Delbert E.
(Missouri-Rolla, University Rolla, United States)
Date Acquired
August 15, 2013
Publication Date
January 1, 1991
Publication Information
Publication: American Ceramic Society, Journal
Volume: 74
ISSN: 0002-7820
Subject Category
Nonmetallic Materials
Accession Number
91A22654
Funding Number(s)
CONTRACT_GRANT: NAS8-34758
Distribution Limits
Public
Copyright
Other

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