Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
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Volume 28, Issue 6
Displaying 1-5 of 5 articles from this issue
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  • Applications of Magnetic Fluid Seals to Vacuum
    Shojiro MIYAKE
    1985 Volume 28 Issue 6 Pages 483-493
    Published: June 20, 1985
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.28.483
    JOURNAL FREE ACCESS
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  • Safety Precautions and Tendency of Using Gas in Making Semiconductor Devices
    Hikaru HARADA
    1985 Volume 28 Issue 6 Pages 494-509
    Published: June 20, 1985
    Released on J-STAGE: January 22, 2010
    DOIhttps://doi.org/10.3131/jvsj.28.494
    JOURNAL FREE ACCESS
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  • Electrochromism of Sputtered Tungstic Oxide Films
    Hirokazu TATSUOKA, Kazuo URABE, Michihiko KITAO, Shoji YAMADA
    1985 Volume 28 Issue 6 Pages 510-514
    Published: June 20, 1985
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.28.510
    JOURNAL FREE ACCESS
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    Electrochromism of tungstic oxide films were investigated. The films were prerared by r. f. sputtering from compressed WO3 target under various total pressure and O2 content of Ar-O2 mixed sputtering atmosphere. Blue films were obtained under low total pressure of sputtering atmosphere with low content of O2. These films could be colored more deeply by the conventional electrochemical procedure, but could not be bleached to transparent states. Transparent films were obtained under the condition of high total pressure or high O2 content of sputtering atmosphere. The transparent films prepared under high pressure show good electrochromic behavior after aging process. During the aging process, “passive protons” are injected into WO3 matrix, where the “passive proton” means that it has no influence on electrochromic absorption band, and is not able to be extracted electrochemically.
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  • Surface Segregation of Ti in Fe-Ti Alloys
    Akiko JIMBO, Tomihiro HASHIZUME, Toshio SAKURAI
    1985 Volume 28 Issue 6 Pages 515-524
    Published: June 20, 1985
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.28.515
    JOURNAL FREE ACCESS
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    The behavior of Ti in Fe-0.29, 0.64 and 1.48 wt%Ti alloys has been investigated using a time-of-flight atom-probe. Ti segregates to the surface when Fe-Ti samples are heated at and above 600°C in vacuum. Enrichment of Ti (includes titanium oxide formation) at the outermost surface layer is 90% at the (110) and (111) planes, 50% at the (211) plane and 70% at the (100) plane. At the (100) plane Ti enrichment extends to the first 4-5 layers while it is limited to only two layers at the other planes.
    Attempts were made to study chemisorption induced surface segregation using H2, D2 and CO. However no significant effects have been observed so far.
    When heated in O2 gas, two distinctly different types of oxidation were observed depending upon O2 partial pressure. At the lower O2 pressure (10-9 Torr), Ti oxide scale was formed on the surface, which markedly slows further oxidation of the alloy substrate, while at the higher O2 pressure (10-5 Torr) subsurface oxidation occurred, forming Fe oxides and Ti-rich clusters within the alloy matrix.
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  • In-depth Analysis of Compound Semiconductor Superlattice Structures Using Auger Electron Spectroscopy
    Hamao OKAMOTO, Masaharu OSHIMA, Nobue MINEGISHI
    1985 Volume 28 Issue 6 Pages 525-528
    Published: June 20, 1985
    Released on J-STAGE: September 04, 2009
    DOIhttps://doi.org/10.3131/jvsj.28.525
    JOURNAL FREE ACCESS
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