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Phase Relations in the Pseudobinary System Na 2 TiSi 4 O 11 ‐Na 2 Ti 2 Si 2 O 9
Author(s) -
Hollabaugh Curtis L.,
Carr William H.
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb04728.x
Subject(s) - liquidus , phase (matter) , materials science , quenching (fluorescence) , analytical chemistry (journal) , phase diagram , crystallography , mineralogy , chemistry , fluorescence , physics , chromatography , quantum mechanics , organic chemistry
The quenching technique was used to study subliquidus and subsolidus phase relations in the pseudobinary system Na 2 Ti 2 Si 2 O 11 ‐Na 2 Ti 2 Si 2 O 9 . Both narsarukite (Na 2 TiSi 4 O 11 ) and lorenzenite (Na 2 Ti 2 Si 2 O 9 ) melt incongruently. Narsarsukite melts at 911°±°C to SiO 2 +liquid, with the liquidus at 1016°C. Lorenzenite melts at 910°±5°C to Na 2 Ti 6 O 13 +liquid; Na 2 Ti 6 O 13 reacts with liquid to form TiO 2 and is thus consumed by 985°±5°C. The liquidus occurs at 1252°C.