材料
Online ISSN : 1880-7488
Print ISSN : 0514-5163
As-Se, As-Se-S, As-Se-TeおよびAs-Se-Tl系ガラスの粘度
功刀 雅長大田 陸夫鈴木 松郎
著者情報
ジャーナル フリー

19 巻 (1970) 197 号 p. 145-150

詳細
PDFをダウンロード (703K) 発行機関連絡先
抄録

The viscosity of glass in the system As-Se, As-Se-S, As-Se-Te and As-Se-Tl was measured by a new penetration viscometer2) at temperature ranging approximately from room temperature to 285°C. The results are shown in Fig. 1, 2, 4, 5 and 6. The density of the glass was also determfined within the same temperature range. The results of variation of viscosity with composition and temperature in the system As-Se, are summarized in Fig. 2, which show that the viscosity increases steadily at all temperatures with the As content up to 45 atomic per cent. The maximum at 45 atomic per cent As in the curves is interpreted as evidence of structural grouping in the glass corresponding to the compound As2Se3.
From tine values of viscosity of the glass at different temperatures, the apparent activation energy Ep, that is, the activation energy at constant pressure was calculated. Its values are given in Fig. 10. Using the Macedo's equation3) for the viscosity of glass containing both the activation energy and the free volume, the relation between the activation energy at constant volume Ev and the composition of the glass was made clear.
The effect of lowering viscosity (η) of glass in the ternary system was found as ranging in the order η(s)>η(Te)>η(Tl).

著者関連情報
© 日本材料学会
前の記事 次の記事

閲覧履歴
前身誌

材料試験

feedback
Top