メカノケミカルプロセスにより得られるSnO_2-Sb_2O_3系半導性微粒子を用いた半導性ガラス複合物の調整

概要

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A semiconductive fine powder was prepared by mechano-chemical reaction with dry ball-miling of a powder mixture of SnO_2 and Xb_2O_3.From the microstructural point of view,discussions were made on the effects of the following factors of (A) and (B) on the electrical conductivity of glass composites containing the ball-milled semiconductive powder;I.e.,(A )ball-milling duration,and (B) firing temperature of powder compact.The results obtained were summarized as follows:(1) The electrical conductivity of the ball-milled powder mixture fignificantly increased with increasing ball-milling time.However,it was pointed out that the reaggregation of finer articles during milling induced a detrimental state to the homogenization of particle dispersion which determines the electrical conduction structure in the glass matrix.(2)It was found that firing at higher temperature was effective to increase the homogeneous dispersion of semiconductive SnO_2 perticles in the glass matrix,resulting in an increase in electrical conductivity of the glass composite.
社団法人日本材料学会の論文
1993-11-15