Internal Friction Of Mixed Alkali Silicate Glasses
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Internal Friction Of Mixed Alkali Silicate Glasses
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Author : J. E. Shelby
language : en
Publisher:
Release Date : 1967
Internal Friction Of Mixed Alkali Silicate Glasses written by J. E. Shelby and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Alkalies categories.
"The mixed alkali effect in silicate glasses was examined from internal friction measurements made over the temperature range from -190 to 500°C and at a frequency of 0.4 Hz. Supplemental measurements of the activation energy for the different internal friction peaks, dynamic shear modulus, density, and index of refraction were also made. All measurements were confined to silicate glasses containing mixtures of Li-Na, Li-K, Li-Rb, Li-Cs, Na-K, Na-Rb, Na-Cs, and K-Rb. Rötger's interpretation of the internal friction of mixed-alkali silicate glasses is shown to be incorrect. A previously unreported internal friction peak was observed whenever two different alkali oxides were present simultaneously, The behavior of this peak in the different mixed alkali glasses is more easily correlated with the radius ratio of the two alkali ions present than with the mass ratio. A stress induced alkali ion position interchange is suggested as the probable mechanism responsible for this peak"--Abstract, leaf ii.
Alkali Mobility And Mechanical Relaxation In Mixed Alkali Silicate Glasses
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Author : James W. Fleming (Jr.)
language : en
Publisher:
Release Date : 1971
Alkali Mobility And Mechanical Relaxation In Mixed Alkali Silicate Glasses written by James W. Fleming (Jr.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Alkalies categories.
"Internal friction and sodium and potassium self-diffusion coefficients for (1-X)Na2O·XK2O·3SiO2 glasses were measured. Alkali diffusion was measured between 300 and 500°C using radioactive isotopes and a thin-sectioning technique. Internal friction was measured from room temperature to 500°C, 0.1 to 2000 Hz. Comparison between alkali diffusion and internal friction data for Na-K glasses with those for other mixed-alkali glasses shows that the mixed-alkali peak is related to alkali mobility. It is concluded that the mechanism for mixed-alkali internal friction is a cooperative rearrangement of dissimilar alkali ions, with the slower moving ion controlling the rate of reorientation"--Abstract, leaf iii.
Diffusion And Internal Friction In Sodium Rubidium Silicate Glasses
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Author : G. L. McVay
language : en
Publisher:
Release Date : 1970
Diffusion And Internal Friction In Sodium Rubidium Silicate Glasses written by G. L. McVay and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Alkali metal compounds categories.
"The internal friction and self diffusion coefficients of sodium and rubidium ions for (1 - X) Na2O·X Rb2O·3 SiO2 glasses have been measured. The diffusion measurements employed radioactive isotopes and a thin sectioning technique and extended from 350 to 500°C. Internal friction measurements were made from -150 to 500°C and at frequencies of 0.05 to 6000 Hz. The maximum height for the mixed alkali internal friction peak occurs at the composition where the sodium and rubidium diffusion coefficients are equal. It is concluded that the mechanism responsible for the mixed alkali peak is a cooperative rearrangement of sodium-rubidium ions and that the slowest moving ion controls the rate of this rearrangement. This mechanism should also apply to other mixed alkali silicate glasses since the internal friction for these systems is similar. The height of the alkali peak was compared with the corresponding alkali ion diffusion coefficient for several alkali aluminosilicate and silicate glasses. A direct correlation was found between the height of an alkali peak and the magnitude of the diffusion coefficient of the appropriate alkali ion"--Abstract, leaf ii.
Internal Friction Of Ion Exchanged Alkali Silicate Glasses
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Author : Theodore David Taylor
language : en
Publisher:
Release Date :
Internal Friction Of Ion Exchanged Alkali Silicate Glasses written by Theodore David Taylor and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Internal Friction Behaviour Of Mixed Alkali Glasses
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Author : Henricus M. van Ass
language : en
Publisher:
Release Date : 1975
Internal Friction Behaviour Of Mixed Alkali Glasses written by Henricus M. van Ass and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1975 with categories.
The Constitution Of Glasses
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Author : Woldemar Anatol Weyl
language : en
Publisher:
Release Date : 1962
The Constitution Of Glasses written by Woldemar Anatol Weyl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Glass categories.
The Constitution Of Glasses Pt 1 2 Constitution And Properties Of Some Representative Glasses
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Author : Woldemar Anatol Weyl
language : en
Publisher:
Release Date : 1962
The Constitution Of Glasses Pt 1 2 Constitution And Properties Of Some Representative Glasses written by Woldemar Anatol Weyl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Glass categories.
Physics And Chemistry Of Glasses
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Author :
language : en
Publisher:
Release Date : 1967
Physics And Chemistry Of Glasses written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Glass categories.
Research In Progress
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Author :
language : en
Publisher:
Release Date : 1971
Research In Progress written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Military research categories.
The Constitution Of Glasses Constitution And Properties Of Some Representative Glasses Representative Types Of Glasses
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Author : Woldemar Anatol Weyl
language : en
Publisher:
Release Date : 1962
The Constitution Of Glasses Constitution And Properties Of Some Representative Glasses Representative Types Of Glasses written by Woldemar Anatol Weyl and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1962 with Glass categories.