Preparation of SiO2-TiO2 graded glass by using high gravity field combined with sol-gel method

Masamichi Nishihara, Takashi Sagawa, Hirotaka Ihara, Rika Nishimura, Susumu Matsuzaki, Tsutomu Mashimo

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A method to prepare the multi-component oxide glass with graded structure was proposed. This method is based on the facts that colloid particles can sediment during a sol-gel transition process under comparatively low gravity field, and the resultant gel can be converted into glass at lower temperature treatment than a conventional method. The graded structure was formed by centrifuging (10,000 g level) the Si and Ti mixed colloids, and immobilized by removal of solvent at 90 °C. This graded precursor gel was heated to 900 °C to convert into a glass state. The proper condition to prepare the graded glass was examined especially focusing on the growth time of colloids before the centrifugation. A transparent SiO2-TiO2 glass with molecular-scale graded structure was obtained in many trials.

Original languageEnglish
Pages (from-to)1201-1204
Number of pages4
JournalFuntai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
Volume47
Issue number11
DOIs
Publication statusPublished - Jan 1 2000
Externally publishedYes

Fingerprint

Sol-gel process
Gravitation
Colloids
Glass
Gels
Centrifugation
Oxides
Particles (particulate matter)
Sol-gels
Sediments
TiO2-SiO2
Temperature

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Metals and Alloys
  • Materials Chemistry

Cite this

Preparation of SiO2-TiO2 graded glass by using high gravity field combined with sol-gel method. / Nishihara, Masamichi; Sagawa, Takashi; Ihara, Hirotaka; Nishimura, Rika; Matsuzaki, Susumu; Mashimo, Tsutomu.

In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy, Vol. 47, No. 11, 01.01.2000, p. 1201-1204.

Research output: Contribution to journalArticle

Nishihara, Masamichi ; Sagawa, Takashi ; Ihara, Hirotaka ; Nishimura, Rika ; Matsuzaki, Susumu ; Mashimo, Tsutomu. / Preparation of SiO2-TiO2 graded glass by using high gravity field combined with sol-gel method. In: Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 2000 ; Vol. 47, No. 11. pp. 1201-1204.
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