Thermal expansion coefficients for indialite, emerald, and beryl

Autor:	Gerald V. Gibbs, John L. Schlenker, Elizabeth G. Hill, Sharon S. Crews, R. H. Myers
Rok vydání:	1977
Předmět:	Trace Amounts Hexagonal crystal system Chemistry Mineralogy Thermodynamics engineering.material Emerald Thermal expansion Low volume Geochemistry and Petrology Impurity visual_art visual_art.visual_art_medium engineering General Materials Science Ceramic
Zdroj:	Physics and Chemistry of Minerals. 1:243-255
ISSN:	1432-2021 0342-1791
DOI:	10.1007/bf00307565
Popis:	Thermal expansion coefficients ɛ1 and ɛ3 calculated for the hexagonal minerals indialite, emerald and beryl are, in general, small with ɛ3 being negative near room temperature. This unusual behavior leads to low volume coefficients of thermal expansion (β=2ɛ1+ɛ3) making these materials ideal ceramic bodies for catalyst carriers in air-pollution control. The temperature at which the c-cell edge length of beryl is a minimum is strongly dependent upon the presence of trace amounts of impurity atoms. This effect is ascribed to changes in the Gruneisen parameters.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::70a8c1e992d41945dd79e96ef84fe58e https://doi.org/10.1007/bf00307565 Zobrazit plný text záznamu