Abstract
The objective in this study was to clarify the change of pH with time inside crevice in potentiostatic crevice corrosion test. Sensing plate to discoloration by the change of pH was made. The crevice corrosion of a duplex stainless steel in potentiostatic crevice corrosion test using a sensing plate was in situ observation. The change of pH with time inside crevice was measured by discoloration of the coating agent of the sensing plate. Crevice corrosion of duplex stainless steel occurred at the point where pH is lowered locally. And, it was found that pH of crevice corrosion tip was below the depassivation pH of both phases.
| Original language | English |
|---|---|
| Pages (from-to) | 193-196 |
| Number of pages | 4 |
| Journal | Zairyo to Kankyo/ Corrosion Engineering |
| Volume | 64 |
| Issue number | 5 |
| Publication status | Published - 2015 |
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Keywords
- Crevice corrosion
- Depassivation
- Duplex stainless steel
- Growth
- In-situ observation
- Initiation
- PH
ASJC Scopus subject areas
- Electrochemistry
- Materials Chemistry
- Metals and Alloys
- Surfaces, Coatings and Films
Cite this
Change of pH of inside the crevice with time during crevice corrosion initiation and growth step of a duplex stainless steel. / Ito, Nobuaki; Yamamoto, Ryotaro; Sakai, Jun'ichi.
In: Zairyo to Kankyo/ Corrosion Engineering, Vol. 64, No. 5, 2015, p. 193-196.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Change of pH of inside the crevice with time during crevice corrosion initiation and growth step of a duplex stainless steel
AU - Ito, Nobuaki
AU - Yamamoto, Ryotaro
AU - Sakai, Jun'ichi
PY - 2015
Y1 - 2015
N2 - The objective in this study was to clarify the change of pH with time inside crevice in potentiostatic crevice corrosion test. Sensing plate to discoloration by the change of pH was made. The crevice corrosion of a duplex stainless steel in potentiostatic crevice corrosion test using a sensing plate was in situ observation. The change of pH with time inside crevice was measured by discoloration of the coating agent of the sensing plate. Crevice corrosion of duplex stainless steel occurred at the point where pH is lowered locally. And, it was found that pH of crevice corrosion tip was below the depassivation pH of both phases.
AB - The objective in this study was to clarify the change of pH with time inside crevice in potentiostatic crevice corrosion test. Sensing plate to discoloration by the change of pH was made. The crevice corrosion of a duplex stainless steel in potentiostatic crevice corrosion test using a sensing plate was in situ observation. The change of pH with time inside crevice was measured by discoloration of the coating agent of the sensing plate. Crevice corrosion of duplex stainless steel occurred at the point where pH is lowered locally. And, it was found that pH of crevice corrosion tip was below the depassivation pH of both phases.
KW - Crevice corrosion
KW - Depassivation
KW - Duplex stainless steel
KW - Growth
KW - In-situ observation
KW - Initiation
KW - PH
UR - http://www.scopus.com/inward/record.url?scp=84947072478&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84947072478&partnerID=8YFLogxK
M3 - Article
VL - 64
SP - 193
EP - 196
JO - Corrosion Engineering
JF - Corrosion Engineering
SN - 0917-0480
IS - 5
ER -