Alternative modification methods for sol-gel coatings of silica, titania and silica-titania using ultraviolet irradiation and water vapor

Hiroaki Imai, Hiroshi Hirashima, Koichi Awazu

研究成果: Conference article査読

58 被引用数 (Scopus)

抄録

We investigated relatively new techniques for densification and crystallization of sol-gel silica, titania and silica-titania coatings at relatively low temperatures. Irradiation of ultraviolet photons above the band-gap energy was found to lead shrinkage of the sol-gel films through electronic excitations. Crystallization of sol-gel titania coatings was achieved by irradiation of ultraviolet laser (4.7 eV) beam. Exposure to water vapor was shown to be effective in rearrangement of sol-gel films causing densification of silica, crystallization of titania and phase separation of silica-titania around 100°C. These techniques are useful for preparation of hard silica coatings and crystalline titania films on low-heat-resistant substrates, such as polymer plates.

本文言語English
ページ(範囲)91-94
ページ数4
ジャーナルThin Solid Films
351
1-2
DOI
出版ステータスPublished - 1999 8 30
イベントProceedings of the 1998 2nd International Confernce on Coatings on Glass (ICCG) - Saarbrucken, Germany
継続期間: 1998 9 61998 9 10

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 表面および界面
  • 表面、皮膜および薄膜
  • 金属および合金
  • 材料化学

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