Atmospheric corrosivity estimation at electrical control unit room by multichannel quartz crystal microbalance corrosion sensors

Kazumi Fujii, Kenya Ohashi, Tadahiko Hashimoto, Nobuyoshi Hara

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

In order to evaluate the atmospheric corrosivity in an electrical control unit room in a steelmaking plant by using quartz crystal microbalance (QCM) sensors, the temperature, relative humidity and corrosion rates of metals on QCM were monitored for five months. The metals employed for sensing corrosive gases were silver, copper and cobalt. The concentrations of the corrosive gases were estimated from the data of corrosion rates for these metals considering relative humidity. The temperature, relative humidity, and the corrosion rates in a given day were distributed according to the normal probability law. The concentrations of H 2S, SO 2 and NO-acny were estimated from the mean values of the relative humidity and the corrosion rates of silver, copper and cobalt, which derived from the normal probability plots. The concentrations thus obtained were roughly close to those analyzed by conventional analytical methods. The atmospheric corrosivity will be able to estimate based on the monitoring of the corrosion rate with multichannel QCM sensors.

Original languageEnglish
Pages (from-to)412-416
Number of pages5
JournalMaterials Transactions
Volume53
Issue number2
DOIs
Publication statusPublished - 2012

Keywords

  • Cobalt
  • Copper
  • Corrosion rate
  • Electrical control unit
  • Hydrogen sulfide
  • Inverse estimation
  • Nitrogen dioxide
  • Normal probability distribution
  • Quartz crystal microbalance
  • Relative humidity
  • Silver
  • Sulfur dioxide
  • Temperature

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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