Crystallization of 60SiO2-20MgO-10Al2O 3-10BaO glass ceramics

E. Manor, R. Z. Shneck

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Three distinctly different microstructures of silica (as quartz and crystobalite), alumina, enstatite, and celsian, were found to develop in a 60SiO2-20MgO-10Al2O3-10BaO glass ceramic. At 1010 C, growth of wormy fibrillar crystals was observed, indicating that crystal growth was diffusion controlled. At the intermediate temperature of 1080°C, a coarse cellular microstructure developed with multiple spherical particles nucleated on their surfaces and in the surrounding glass. At 1200°C, the glass crystallizes in a denderitic morphology but the dendrites were actually fragmented into multiple cube-shaped enstatite crystals, indicating a transition to interface-controlled growth. The crystals coarsen with time but maintain their order along the dendrite skeletons.

Original languageEnglish
Pages (from-to)2249-2254
Number of pages6
JournalJournal of the American Ceramic Society
Issue number8
StatePublished - 1 Aug 2005

ASJC Scopus subject areas

  • Ceramics and Composites
  • Materials Chemistry


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