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Study on the sol-gel-synthesis of glasses with novel structure

Research Project

Project/Area Number 07455349
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field 無機工業化学
Research InstitutionMie University

Principal Investigator

KAMIYA Kanichi  Mie University Fac.Engineering, Professor, 工学部, 教授 (00024597)

Co-Investigator(Kenkyū-buntansha) HASHIMOTO Tadanori  Mie University Fac.Engineering, Research associate, 工学部, 助手 (10271016)
NASU Hiroyuki  Mie University Fac.Engineering, Associate Professor, 工学部, 助教授 (20189179)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥5,700,000 (Direct Cost: ¥5,700,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 1995: ¥5,000,000 (Direct Cost: ¥5,000,000)
KeywordsSol-gel method / Germanate glasses / Titanate glasses / Coordination state of cations / X-ray diffraction / EXAFS / Alumina gels / Zircon gels / 低温ガラス合成 / BaO-TiO_2ガラス / PbO-GeO_2ガラス / ケイ素グリコラト錯体 / 非晶質アルミナゲル / ア・ミナゲルの低温α化 / 5配位ケイ素 / サルファイドガラス / 光学非線系性 / アルナミゲル
Research Abstract

The sol-gel method using metal alkoxides as raw materials was appliedto the preparation of glasses with unique compositions and structure which can not be achieved by the conventional melting technique. Following results were obtained.
(1) Germanate glasses : The Na_20-Ge0_2 and Pb0-Ge0_2 glasses were obtainable by the sol-gel method. The structure, especially coordination state of Ge in those glasses was examined by several tchniques such as X-ray radial distribution function analyzes, EXAFS,IR and Raman spectroscopy. It was found that the amount of 6-fold coordinated Ge ions in the sol-gel-derived glasses was almost twice as large as the corresponding melt-derived glasses.
(2) Titanate glasses : The Na_20-Ti0_2, Ba0-Ti0_2, PbO-TiO_2, Nb_20_5-Ti0_2, and Bi_20_3-Ti0_2 glasses with very high content of Ti0_2 were also prepared by the sol-gel method. The coordination state of Ti in the former two glasses was 5- and 6-fold, respectively, and the Ti0_n polyhedra were highly distorted, making … More these glasses usable in the nonlinear optics. The latter three glasses, really, exhibited third-order optical nonlinear susceptibility as high as 10^<-12> esu.
(3) Li and K-glicolato complex of 5-fold coordinated Si was thermally decomposed to obtain Li_20- or K_20-Si0_2 glasses with unique structure. While Li-Si complex gave glasses with the structure similar to corresponding melt-derived glasses, it was considered that K-Si complex produced glasses containing a small amount of 5-fold coordinated Si.
(4) Alumina gels which transformed partly to alpha-alumina around 500゚C was prepared from aluminum alkoxide under carefully controlled hydrolysis condition. Also, carefully designed hydrolysis reaction of Zr-and Si-alkoxides was found to lead to the Zr0_2-Si0_2 gel which produced ZrSi0_4 around 800゚C,when a lithium compound was added as a mineralizer.
All above results have confirmed that the sol-gel method can really make glasses and gels with unique or novel structure and compositions at relatively low elevated temperatures. Less

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (28 results)

All Other

All Publications (28 results)

  • [Publications] Kanichi Kamiya: "Preparation of alumina gels forming α-alumina around 500°C" Journal of Ceramic Society of Japan. 104. 685-687 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Structure study of sol-gel-derived sodium germanate glasses by X-ray diffraction and EXAFS method" Physics and Chemistry of Glasses. (印刷中)(予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroshi Harada: "Structure of sol-gel-derived sodium dititanate glasses" Journal of Sol-Gel Science and Technology. (印刷中)(予定). (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 神谷寛一: "ゾル-ゲル法で作られる重金属酸化物ガラス" NEW GLASS. 10. 34-40 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Fibers from sol-gel" Ceramic Transactions. 55. 371-382 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Matsuoka: "Sol-gel processing and optical noulivearity of Au microcrystal-doped oxide thin films" Proceedings of XVII International Congress on Glass. 4. 252-257 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroyuki Nasu: "Sol-gel preparation and third-order optical nonlinearity of amorphous Bi_2O_3-TiO_2 and Nb_2O_5-TiO_2 films" Journal of Ceramic Society of Japan. 104. 771-780 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 神谷寛一: "ゾル-ゲル法" 化学. 51. 704-705 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya,: "Sol-gel coating of the Cu_2O・Al_2O_3・4SiO_2 glass-ceramics with SiO_2 glass film for suppressing abnormal thermal expansion behavior" -ournal of Materials Science Letters. 14. 1102-1104 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroyuki Nasu: "Sol-gel preparation and third-order optical nonlinearity of amorphous Bi_20_3-Ti0_2 and Nb_20_5-Ti0_2 films" Journal of Ceramic Society of Japan. 104. 771-780 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Preparation of alumina gels forming alpha-alumina around 500゚C" Journal of Ceramic Society of Japan. 104. 685-687 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Sol-gel method" Kagaku. 51. 704-705 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Structure study of sol-gel-derived sodium germanate glasses by X-ray diffraction and EXAFS method" Physics and Chemistry of Glasses. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroshi, Harada: "Structure of sol-gel-derived sodium dititanate glasses" Journal of Sol-Gel Science and Technology. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Sol-gel preparation of heavy metal oxide glasses" NEW GLASS. 10. 34-40 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Fibers from sol-gel" Ceramic Transactions. 55. 371-382 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Jun Matsuoka: "Sol-gel processing and optical nonlinearity of Au microcrystal=doped oxide thin films" Proceedings of X VII International Congress on Glass. 4. 252-257 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Kanichi Kamiya: "Sol-gel coating of the Cu_20・Al_20_3・4Si0_2 glass-ceramics with Si0_2 glass film for suppressing abnormal thermal expansion behavior" Journal of Materials Science Letters. 14. 1102-1104 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Hiroyuki Nasu: "Sol-gel preparation and third order optical nonlinearity of amorphous Bi_2O_3-TiO_2 and Nb_2O_5-TiO_2 films" Journal of Ceramic Society of Japan. 104. 777-780 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kanichi Kamiya: "Preparation of alumina gels forming α-alumina around 500℃" Journal of Ceramic Society of Japan. 104. 685-687 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 神谷寛一: "ゾル-ゲル法" 化学. 51. 704-705 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] 神谷寛一: "500℃でα-アルミナを生成するアルミナゲルの調製" 三重大学機器分析センター研究報告書. 1. 18-22 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kanichi Kamiya: "Structure study of sol-gel-derived sodium germanate glasses by X-ray diffraction and EXAFS methods" Physics and Chemistry of Glasses. (印刷中)予定. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Hiroshi Harada: "Structure of sol-gel-derived sodium dititanate glasses" Journal of Sol-Gel Science and Technology. (印刷中)予定. (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Kanichi Kamiya: "Fibers from sol-gel" Ceramic Transaction. 55. 371-382 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 神谷寛一: "ゾル-ゲル法で作られる重金属酸化物ガラス" NEW GLASS. 10. 34-40 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] 神谷寛一: "5配位ケイ素錯体-ケイ酸塩ガラスやセラミックスの前駆体" 化学. 50. 454-455 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Hiroyasu Nasu: "Sol‐Gel preparation and third‐order optical nonlinearity of Bi_2O_3‐TiO_2 and Nb_2O_5‐TiO_2 films" Journal of Ceramic Society of Japan. (in press).

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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