2019年3月1日
Effect of heat-treatment on the pH sensitivity of stainless-steel electrodes as pH sensors
Heliyon
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- 巻
- 5
- 号
- 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
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- 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
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- 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