Infrared spectroscopic method for determination of thermal properties of fluorophosphate glasses
IR@CGCRI: CSIR-Central Glass and Ceramic Research Institute, Kolkata
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| Title |
Infrared spectroscopic method for determination of thermal properties of fluorophosphate glasses
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| Creator |
Karmakar, Basudeb
Kundu, Paritosh Dwivedi, Ravindra Nath |
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| Subject |
Glass
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| Description |
Fluorophosphate glasses of the Ba(PO3)(2)-MgF2-CaF2-AlF3 system exhibit anomalous behavior, in regard to the glass-transition temperature (T-g) and the coefficient of thermal expansion (alpha(CTE)), at a fluoride concentration of similar to 36 mol%. A similar trend in the infrared band absorption coefficient (alpha(IR)) at 2170 cm(-1) of the overtone of 2 nu(ss)(OPO) and/or a combination of nu(as)(OPO)+nu(as)(POP) fundamental vibrations of PO4 tetrahedra also has been observed, relative to changes in the glass composition. Statistical analyses have shown that the T-g and alpha(CTE) values are correlated with alpha(IR) at 2170 cm(-1) by linear equations. The thermal properties of some of the glasses have been calculated using these equations, to test their validity and utility. The experimental property values of the glasses present a very good fit of data within a 95% confidence interval of the calculated mean values
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| Publisher |
American Ceramic Society
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| Date |
2000-05
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| Type |
Article
PeerReviewed |
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| Format |
application/pdf
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| Identifier |
http://cgcri.csircentral.net/708/1/basudeb.pdf
Karmakar, Basudeb and Kundu, Paritosh and Dwivedi, Ravindra Nath (2000) Infrared spectroscopic method for determination of thermal properties of fluorophosphate glasses. Journal of the American Ceramic Society, 83 (5). pp. 1305-1307. ISSN 0002-7820 |
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| Relation |
http://cgcri.csircentral.net/708/
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