論文

査読有り 筆頭著者 責任著者 本文へのリンクあり
2019年3月1日

Effect of heat-treatment on the pH sensitivity of stainless-steel electrodes as pH sensors

Heliyon
  • Tadanori Hashimoto
  • ,
  • Hiroki Kitabayashi
  • ,
  • Kenta Ito
  • ,
  • Hiroyuki Nasu
  • ,
  • Atsushi Ishihara
  • ,
  • Yuji Nishio

5
3
開始ページ
e01239
終了ページ
e01239
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1016/j.heliyon.2019.e01239
出版者・発行元
Elsevier BV

Effect of heat-treatment on the pH sensitivity of uncoated stainless-steel electrodes was investigated to comprehend the pH sensitivity of metal-oxide coated stainless-steel electrodes as novel pH sensors. The pH sensitivity of stainless-steel electrodes as-received and heat-treated at 500 degrees C, 600 degrees C and 700 degrees C for 24 h were 91 %, 94 %, 102 % and 91 %, respectively. The pH sensitivity tended to increase with increasing heat-treatment time at a given temperature. Thus, the most suitable heat-treatment condition for the stainless-steel electrodes was 600 degrees C for 24 h. The austenite phase (fcc) was the main phase on the surface of the heat-treated stainless-steel electrodes. Unexpectedly, the change in the martensite phase (bcc) as the second phase with heat-treatment temperature was similar to the pH sensitivity, with the martensite phase affecting the pH sensitivity. Therefore, it appeared that the pH sensitivity of the metal-oxide coated stainless-steel electrodes was affected by the underlying stainless-steel as well as the outer metal-oxide film coating. A prototype stainless-steel tube electrode was used as a working electrode for demonstrating the depth profiling of pH. The stainless-steel tube electrode showed good performance for measuring pH depth profiles compared to commercially available glass electrodes.

リンク情報
DOI
https://doi.org/10.1016/j.heliyon.2019.e01239
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/30976665
PubMed Central
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6441752
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000463067400038&DestApp=WOS_CPL
共同研究・競争的資金等の研究課題
セルフクリーニングpH電極ならびにディスポーザブルpH電極の開発
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85063387948&origin=inward 本文へのリンクあり
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=85063387948&origin=inward
ID情報
  • DOI : 10.1016/j.heliyon.2019.e01239
  • ISSN : 2405-8440
  • ORCIDのPut Code : 55819900
  • PubMed ID : 30976665
  • PubMed Central 記事ID : PMC6441752
  • SCOPUS ID : 85063387948
  • Web of Science ID : WOS:000463067400038

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