Titania-silica glasses prepared by sintering alkoxide derived spherical colloids

W. T. Minehan; G. L. Messing; C. G. Pantano

doi:10.1016/0022-3093(89)90579-6

Titania-silica glasses prepared by sintering alkoxide derived spherical colloids

W. T. Minehan, G. L. Messing, C. G. Pantano

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23 Scopus citations

Abstract

Titania-silica glasses of 3.1 to 8.5 wt% titania were prepared by sintering alkoxide synthesized colloidal powders. The process capitalizes on the advantages of sol-gel chemistry for powder synthesis while circumventing the problem of drying gels. Green bodies formed by colloidal gelation, uniaxial dry pressing and tape casting were sintered from 1200 to 1500°C to yield crystallite-free glasses. Complete solution of up to 8.5 wt% titania was inferred from TEM and FTIR analysis. Thermal expansion coefficients ranged from 2.6 × 10^-7 to -0.38 × 10^-7/°C between 25 and 700°C for glasses containing 3.1 to 8.5% TiO₂, respectively.

Original language	English (US)
Pages (from-to)	163-168
Number of pages	6
Journal	Journal of Non-Crystalline Solids
Volume	108
Issue number	2
DOIs	https://doi.org/10.1016/0022-3093(89)90579-6
State	Published - Mar 1989

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Materials Chemistry

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10.1016/0022-3093(89)90579-6

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title = "Titania-silica glasses prepared by sintering alkoxide derived spherical colloids",

abstract = "Titania-silica glasses of 3.1 to 8.5 wt% titania were prepared by sintering alkoxide synthesized colloidal powders. The process capitalizes on the advantages of sol-gel chemistry for powder synthesis while circumventing the problem of drying gels. Green bodies formed by colloidal gelation, uniaxial dry pressing and tape casting were sintered from 1200 to 1500°C to yield crystallite-free glasses. Complete solution of up to 8.5 wt% titania was inferred from TEM and FTIR analysis. Thermal expansion coefficients ranged from 2.6 × 10-7 to -0.38 × 10-7/°C between 25 and 700°C for glasses containing 3.1 to 8.5% TiO2, respectively.",

author = "Minehan, {W. T.} and Messing, {G. L.} and Pantano, {C. G.}",

note = "Funding Information: The authors gratefully acknowledge the Air Force Weapons Lab (F2960-85-c-0056) for financial support.",

year = "1989",

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doi = "10.1016/0022-3093(89)90579-6",

language = "English (US)",

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T1 - Titania-silica glasses prepared by sintering alkoxide derived spherical colloids

AU - Minehan, W. T.

AU - Messing, G. L.

AU - Pantano, C. G.

N1 - Funding Information: The authors gratefully acknowledge the Air Force Weapons Lab (F2960-85-c-0056) for financial support.

PY - 1989/3

Y1 - 1989/3

N2 - Titania-silica glasses of 3.1 to 8.5 wt% titania were prepared by sintering alkoxide synthesized colloidal powders. The process capitalizes on the advantages of sol-gel chemistry for powder synthesis while circumventing the problem of drying gels. Green bodies formed by colloidal gelation, uniaxial dry pressing and tape casting were sintered from 1200 to 1500°C to yield crystallite-free glasses. Complete solution of up to 8.5 wt% titania was inferred from TEM and FTIR analysis. Thermal expansion coefficients ranged from 2.6 × 10-7 to -0.38 × 10-7/°C between 25 and 700°C for glasses containing 3.1 to 8.5% TiO2, respectively.

AB - Titania-silica glasses of 3.1 to 8.5 wt% titania were prepared by sintering alkoxide synthesized colloidal powders. The process capitalizes on the advantages of sol-gel chemistry for powder synthesis while circumventing the problem of drying gels. Green bodies formed by colloidal gelation, uniaxial dry pressing and tape casting were sintered from 1200 to 1500°C to yield crystallite-free glasses. Complete solution of up to 8.5 wt% titania was inferred from TEM and FTIR analysis. Thermal expansion coefficients ranged from 2.6 × 10-7 to -0.38 × 10-7/°C between 25 and 700°C for glasses containing 3.1 to 8.5% TiO2, respectively.

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Titania-silica glasses prepared by sintering alkoxide derived spherical colloids

Abstract

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