Title:
HYDROGEN PERMEATION TEST DEVICE
Document Type and Number:
WIPO Patent Application WO/2021/049379
Kind Code:
A1
Abstract:
A hydrogen permeation test device (1) according to an embodiment of the present invention uses an electrochemical hydrogen permeation method to measure the amount of hydrogen penetrating a metal material, said test device comprising: a metal test piece (2) having a hydrogen penetration face (2a) that is penetrated by hydrogen, a hydrogen detection face (2b) that detects penetrating hydrogen, and metal plating, formed on the hydrogen detection face, for efficiently detecting hydrogen; a reference electrode (5b) and a counter electrode (4b) for advancing an electrochemical reaction; an electrolysis vessel (3b), housing an aqueous sodium silicate aqueous solution (6) that has a freezing point of 0°C or less and provided on the hydrogen detection face side of the device, that houses the reference electrode (5b) and the counter electrode (4b), and is capable of keeping residual current to 10 nA/cm2 or less when the electric potential of the hydrogen detection face (2b) is –1V to 1V with respect to the reference electrode (5b); and measurement units (7b, 8) for measuring the hydrogen amount on the basis of the value of the electric current value yielded by the electrochemical reaction.
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Inventors:
KAWAMORI MAKOTO
KINUGASA JUNICHIRO
KINUGASA JUNICHIRO
Application Number:
PCT/JP2020/033116
Publication Date:
March 18, 2021
Filing Date:
September 01, 2020
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
G01N17/00; G01N27/26; G01N27/28; G01N27/416
Domestic Patent References:
| WO2014054186A1 | 2014-04-10 |
Foreign References:
| JP2003121406A | 2003-04-23 | |||
| CN108226024A | 2018-06-29 | |||
| JPS5754566B2 | 1982-11-18 | |||
| JP2019165535A | 2019-09-26 |
Other References:
KENICHI TAKAI, ZAIRYO-TO-KANKYO, vol. 60, 2011, pages 230
M. A. V. DEVANATHAN AND Z. STACHURSKI, ELECTROCHEM. SOC., vol. 111, 1964, pages 619
TOMOHIKO OMURA ET AL., ZAIRYO-TO-KANKYO, vol. 54, 2005, pages 61
H. HAGI ET AL., TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, vol. 20, 1979, pages 349
See also references of EP 4012382A4
M. A. V. DEVANATHAN AND Z. STACHURSKI, ELECTROCHEM. SOC., vol. 111, 1964, pages 619
TOMOHIKO OMURA ET AL., ZAIRYO-TO-KANKYO, vol. 54, 2005, pages 61
H. HAGI ET AL., TRANSACTIONS OF THE JAPAN INSTITUTE OF METALS, vol. 20, 1979, pages 349
See also references of EP 4012382A4
Attorney, Agent or Firm:
YAMAO, Norihito (JP)
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