Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 7, Issue 10
Displaying 1-3 of 3 articles from this issue
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  • The Water Ring Vacuum Pump with Air Ejector
    Norimasa NASU
    1964 Volume 7 Issue 10 Pages 344-347
    Published: October 20, 1964
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.7.344
    JOURNAL FREE ACCESS
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  • [title in Japanese]
    [in Japanese], [in Japanese]
    1964 Volume 7 Issue 10 Pages 348-349
    Published: October 20, 1964
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.7.348
    JOURNAL FREE ACCESS
    Download PDF (362K)
  • Evolution of Gas from Fused Silica
    Noboru SAITO, Kakuji MOTOYAMA
    1964 Volume 7 Issue 10 Pages 350-356
    Published: October 20, 1964
    Released on J-STAGE: September 29, 2009
    DOIhttps://doi.org/10.3131/jvsj.7.350
    JOURNAL FREE ACCESS
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    Quantities and composition of gases from commercial fused silica and their raw materials were measured, and the following results were obtained.
    a) Quantities of all gases extracted from silicas are least in fused products.
    b) Opaque silica evolves much quantity of gas than transparent silica.
    c) The composition of gas extracted from a crystalline quartz consists mainly of H2O and CO2, but in the case of fused silica H2 takes the place of them.
    d) Diffusion constant of H2 in transparent fused silica is
    DH2=6. 3×10-3exp (-11400/RT) (cm2/sec)
    e) Heat tzeatment of quartz in non-redr cibe-atmosphere can decrease the amount of gas evolution remarkably.
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