Influence of solution composition on the formation of SiO2/LaF3 composites in the sol-gel process

S. Fujihara, T. Kato, T. Kimura

研究成果: Article査読

13 被引用数 (Scopus)

抄録

Influence of starting solution composition on the formation of SiO2/LaF3 composites was examined in the sol-gel process of tetramethylorthosilicate, methanol, water and N,N-dimethylformamide. Trifluoroacetic acid (TFA) and lanthanum acetate were used as chemical sources for LaF3. Microcrystals of LaF3 with a size of 10 nm were formed in silica matrix by heating dried gels above 300°C. Colorization, crack formation and fragmentation during drying and heating gels were greatly dependent on the amount of TFA. It was possible to suppress fragmentation of the heated gels by using lanthanum trifluoroacetate gels as precursor in preparing the starting solutions.

本文言語English
ページ(範囲)2763-2767
ページ数5
ジャーナルJournal of Materials Science
35
11
DOI
出版ステータスPublished - 2000

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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