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The Chemical Durability of SiO_2-Na_2O-Oxide of Transition Element System Glasses (1st Report) : SiO_2-Na_2O-V_2O_5 Syetem

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 21 Issue 1 Page 1-11
published_at 1970
KJ00002585408.pdf
[fulltext] 754 KB
Title
遷移元素の酸化物を第3成分とするシリカ・ソーダ系ガラスの化学的耐久性(第1報) : SiO_2-Na_2-V_2O_5系
The Chemical Durability of SiO_2-Na_2O-Oxide of Transition Element System Glasses (1st Report) : SiO_2-Na_2O-V_2O_5 Syetem
Creators Yatabe Shunichi
Creators Mima Toshiaki
Creators Imajyo Yasuomi
Source Identifiers
Creator Keywords
redundant highway network medical facility location
The chemical durability of glasses to water was studied in this paper. Sixteen kinds of glasses in SiO_2-Na_2O-V_2O_5 system were fused in electric furnace. The fused glasses were powdered into particles of 35-60 meshes and 2g of them were immersed in 50cc water of 30,50 and 70℃ while being stirred during 10,20,40 and 80 minutes respectively. Then the amounts of vanadium dissolved into water were measured by chelatometric titration. The results were as follows. 1) The experimental data were tested by analysis of variance and it was proved that log of dissolved amounts was linear function of log of dissolving time and reciprocal of absolute temperature. 2) The dissolved amounts increased with increasing VO_<2.5> mol and decreased with increasing Na_2O mol in constant SiO_2 mol, and they increased with increasing Na_2O mol and decreased with increasing SiO_2 mol in constant VO_<2.5> mol. 3) In glasses of SiO_2 60 and 65mol, there were minimum value of dissolved amounts at certain composition, and in VO_<2.5> 15 mol, there were also minimum value at certain composition.
Subjects
材料工学 ( Other)
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1970
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部