Investigation of Corrosion Inside and Outside Pay Phones Using Metal Plate Exposure Method.

DOI
  • IKEDA Kosuke
    NTT Lifestyle and Environmental Technology Research Laboratory

Bibliographic Information

Other Title
  • 金属板暴露法による公衆電話機内外の環境調査

Abstract

Corrosion inside pay phones was evaluated for the first time using the metal plate exposure method at this time. There have been no previous environmental investigations of the inside of pay phones located outdoors. The amount of corrosion inside and outside pay phones set up in nine in Kyusyu, which included a volcanic area, a coastal area, and several industrial areas, were evaluated by setting up silver plate and copper plate for about one month. The main results of the investigation are as follows.<BR>(1) Sulfur and chlorine corrosion occurs in pay phones. This caused by the inflow of corrosive gases into the pay phone.<BR>(2) The amount of sulfur corrosion inside pay phones is dependent on whether the pay phone is a volcanic area and an industrial region, etc. Putting the area aside, the ratio of the sulfur corrosion inside pay phones to that outside of pay phones is fixed at about 0.3.<BR>(3) For the amount of chlorine corrosion inside pay phones, dependency on the type of area was comparatively low and almost constant.<BR>(4) When the amount of corrosion inside pay phones was compared with the amount of corrosion inside NTT buildings in the Kanto area, the amount of sulfur corrosion inside pay phones was less than that inside the NTT buildings. However, the amount of the chlorine corrosion inside pay phones is larger than that inside the NTT buildings.

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Details 詳細情報について

  • CRID
    1390282679593898624
  • NII Article ID
    130004377310
  • DOI
    10.11298/taiki1995.36.2_114
  • COI
    1:CAS:528:DC%2BD3MXivFertL4%3D
  • ISSN
    21854335
    13414178
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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