Pressureless Sintering of Apatite/Wollastonite-Phlogopite Glass-Ceramics

Apatite/wollastonite (A/W)—phlogopite (Ph) glass‐ceramics of various compositions were prepared by means of pressureless sintering of two frit mixtures. Sintering conditions were studied by differential thermal analysis (DTA) and hot‐stage microscopy. The sintered samples were characterized by X‐ray...

Full description

Saved in:
Bibliographic Details
Published in:Journal of the American Ceramic Society 2009-07, Vol.92 (7), p.1514-1518
Main Authors: Faeghi-Nia, Aida, Marghussian, Vahak K., Taheri-Nassaj, Ehsan, Pascual, Maria J., Durán, Alicia
Format: Article
Language:English
Subjects:
Ceramic sintering
Crystallization
Density
Glass
Materials science
Microscopy
Studies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Apatite/wollastonite (A/W)—phlogopite (Ph) glass‐ceramics of various compositions were prepared by means of pressureless sintering of two frit mixtures. Sintering conditions were studied by differential thermal analysis (DTA) and hot‐stage microscopy. The sintered samples were characterized by X‐ray diffraction. The results showed that by addition of a frit of phlogopite composition to a frit of A/W composition, the crystallization temperature decreases which results in suppressing the sintering process. The 50–50 frits mixture could be sintered to 0.90 relative density after 1 h heating at 1100°C. The type and sequence of formation of crystalline phases were also modified. Whereas the A/W glass–ceramic crystallized to apatite and wollastonite, the crystallization products of 50–50 frits mixture were fluoro‐apatite, wollastonite, diopside, and mellilite.
ISSN:0002-7820
1551-2916
DOI:10.1111/j.1551-2916.2009.03018.x