Assessment of hydrogen-induced precipitation in a nickel-copper alloy using thermoelectric power

Y. D. Park; D. L. Olson; A. Landau; M. Pinkas

doi:10.5006/1.3278277

Assessment of hydrogen-induced precipitation in a nickel-copper alloy using thermoelectric power

Y. D. Park
, D. L. Olson
, A. Landau
, M. Pinkas

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

Hydrogen sensing using thermoelectric power (TEP) was performed on a nickel-copper alloy to assess the hydrogen content resulting from cathodic protection. The measured TEP as a function of hydrogen content developed an anomaly at a specific hydrogen content, indicating a hydrogen-induced phase transformation in the alloy. The formation of Ni₂H phase was found in a hydrogen-charged alloy (UNS N05500) using x-ray diffraction (XRD). The transmission electron microscopy (TEM) investigation of the hydrogen-charged alloy specimen revealed nano-sized Ni₂H participates dispersed in the nickel-copper matrix. The measured TEP profile correlated with an alloy hydride phase formation on a hydrogen-metal pressure-composition-temperature (PCT) activity diagrant. These results indicate that the TEP surface contact probe measurements can assist in the nondestructive evaluation (NDE) identification of a microstructural change in hydrogen-charged nickel-copper alloys. With this TEP surface probe measurement technique, in situ determination of the susceptibility of an alloy to hydride formation is possible.

Original language	English
Pages (from-to)	395-402
Number of pages	8
Journal	Corrosion
Volume	62
Issue number	5
DOIs	https://doi.org/10.5006/1.3278277
State	Published - 1 Jan 2006
Externally published	Yes

Keywords

Evaluation
Hydride formation
Hydrogen content
Thermoelectric power
UNS N05500

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Materials Science

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10.5006/1.3278277

Cite this

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title = "Assessment of hydrogen-induced precipitation in a nickel-copper alloy using thermoelectric power",

abstract = "Hydrogen sensing using thermoelectric power (TEP) was performed on a nickel-copper alloy to assess the hydrogen content resulting from cathodic protection. The measured TEP as a function of hydrogen content developed an anomaly at a specific hydrogen content, indicating a hydrogen-induced phase transformation in the alloy. The formation of Ni2H phase was found in a hydrogen-charged alloy (UNS N05500) using x-ray diffraction (XRD). The transmission electron microscopy (TEM) investigation of the hydrogen-charged alloy specimen revealed nano-sized Ni2H participates dispersed in the nickel-copper matrix. The measured TEP profile correlated with an alloy hydride phase formation on a hydrogen-metal pressure-composition-temperature (PCT) activity diagrant. These results indicate that the TEP surface contact probe measurements can assist in the nondestructive evaluation (NDE) identification of a microstructural change in hydrogen-charged nickel-copper alloys. With this TEP surface probe measurement technique, in situ determination of the susceptibility of an alloy to hydride formation is possible.",

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author = "Park, \{Y. D.\} and Olson, \{D. L.\} and A. Landau and M. Pinkas",

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doi = "10.5006/1.3278277",

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journal = "Corrosion",

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TY - JOUR

T1 - Assessment of hydrogen-induced precipitation in a nickel-copper alloy using thermoelectric power

AU - Park, Y. D.

AU - Olson, D. L.

AU - Landau, A.

AU - Pinkas, M.

PY - 2006/1/1

Y1 - 2006/1/1

N2 - Hydrogen sensing using thermoelectric power (TEP) was performed on a nickel-copper alloy to assess the hydrogen content resulting from cathodic protection. The measured TEP as a function of hydrogen content developed an anomaly at a specific hydrogen content, indicating a hydrogen-induced phase transformation in the alloy. The formation of Ni2H phase was found in a hydrogen-charged alloy (UNS N05500) using x-ray diffraction (XRD). The transmission electron microscopy (TEM) investigation of the hydrogen-charged alloy specimen revealed nano-sized Ni2H participates dispersed in the nickel-copper matrix. The measured TEP profile correlated with an alloy hydride phase formation on a hydrogen-metal pressure-composition-temperature (PCT) activity diagrant. These results indicate that the TEP surface contact probe measurements can assist in the nondestructive evaluation (NDE) identification of a microstructural change in hydrogen-charged nickel-copper alloys. With this TEP surface probe measurement technique, in situ determination of the susceptibility of an alloy to hydride formation is possible.

AB - Hydrogen sensing using thermoelectric power (TEP) was performed on a nickel-copper alloy to assess the hydrogen content resulting from cathodic protection. The measured TEP as a function of hydrogen content developed an anomaly at a specific hydrogen content, indicating a hydrogen-induced phase transformation in the alloy. The formation of Ni2H phase was found in a hydrogen-charged alloy (UNS N05500) using x-ray diffraction (XRD). The transmission electron microscopy (TEM) investigation of the hydrogen-charged alloy specimen revealed nano-sized Ni2H participates dispersed in the nickel-copper matrix. The measured TEP profile correlated with an alloy hydride phase formation on a hydrogen-metal pressure-composition-temperature (PCT) activity diagrant. These results indicate that the TEP surface contact probe measurements can assist in the nondestructive evaluation (NDE) identification of a microstructural change in hydrogen-charged nickel-copper alloys. With this TEP surface probe measurement technique, in situ determination of the susceptibility of an alloy to hydride formation is possible.

KW - Evaluation

KW - Hydride formation

KW - Hydrogen content

KW - Thermoelectric power

KW - UNS N05500

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U2 - 10.5006/1.3278277

DO - 10.5006/1.3278277

M3 - Article

AN - SCOPUS:33751094028

SN - 0010-9312

VL - 62

SP - 395

EP - 402

JO - Corrosion

JF - Corrosion

IS - 5

ER -

Assessment of hydrogen-induced precipitation in a nickel-copper alloy using thermoelectric power

Abstract

Keywords

ASJC Scopus subject areas

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