Phase separation of glasses in the system SrO--B/sub 2/O/sub 3/--SiO/sub 2/

Conference · Thu Jan 01 04:00:00 EST 1976 · J. Am. Ceram. Soc.; (United States)

OSTI ID:7364453

Baylor, R Jr; Brown, Jr, J J

The region of stable liquid-phase separation in the system SrO--B/sub 2/O/sub 3/--SiO/sub 2/ was found to extend from the SrO--SiO/sub 2/ binary join, across the ternary region, to the SrO--B/sub 2/O/sub 3/ join. The boundary of the region rich in network-forming oxides lies between the SiO/sub 2/--B/sub 2/O/sub 3/ boundary and the 2.5-mol percent SrO isopleth, whereas the maximum SrO content is between 30.3 and 35.2 mol percent (42 to 48 wt percent) SrO at an SiO/sub 2/:B/sub 2/O/sub 3/ ratio of 4:1. The microstructures of glasses quenched from the immiscibility region were characterized by scanning electron microscopy. Evidence is presented of both stable and metastable phase separation and of microseparation and coring in disperse-phase spheres rich in network-forming oxides.

• Research Organization: Virginia Polytechnic Inst. and State Univ., Blacksburg
• OSTI ID: 7364453
• Conference Information: Journal Name: J. Am. Ceram. Soc.; (United States) Journal Volume: 59:3-4
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202* -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
BORON COMPOUNDS
BORON OXIDES
CHALCOGENIDES
CRYSTAL STRUCTURE
DISPERSIONS
ELECTRON MICROSCOPY
FLUIDS
HEAT TREATMENTS
LIQUIDS
MICROSCOPY
MICROSTRUCTURE
MINERALS
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PHASE STUDIES
QUENCHING
SILICA
SILICON COMPOUNDS
SILICON OXIDES
STRONTIUM COMPOUNDS
STRONTIUM OXIDES