Electrochemical nanoindentation: A new approach to probe hydrogen/deformation interaction

Afrooz Barnoush; Horst Vehoff

doi:10.1016/j.scriptamat.2006.03.041

Electrochemical nanoindentation: A new approach to probe hydrogen/deformation interaction

Afrooz Barnoush^*, Horst Vehoff

^*Corresponding author for this work

Saarland University

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

114 Citations (Scopus)

Abstract

The effect of hydrogen on dislocation nucleation is examined on Ni single crystals with (1 1 1) surface orientation with a specifically designed nanoindentation setup for in situ electrochemical experiments. This is the first time that hydrogen/deformation interaction has been studied in situ on a nanoscale under realistic conditions. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic plastic transition (pop-in) is studied in detail. Clear evidence is provided that hydrogen atoms facilitate homogenous dislocation nucleation.

Original language	English
Pages (from-to)	195-198
Number of pages	4
Journal	Scripta Materialia
Volume	55
Issue number	2
DOIs	https://doi.org/10.1016/j.scriptamat.2006.03.041
Publication status	Published - Jul 2006
Externally published	Yes

Keywords

Dislocation
Homogeneous nucleation
Hydrogen embrittlement
In situ nanoindentation
Nickel

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10.1016/j.scriptamat.2006.03.041

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abstract = "The effect of hydrogen on dislocation nucleation is examined on Ni single crystals with (1 1 1) surface orientation with a specifically designed nanoindentation setup for in situ electrochemical experiments. This is the first time that hydrogen/deformation interaction has been studied in situ on a nanoscale under realistic conditions. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic plastic transition (pop-in) is studied in detail. Clear evidence is provided that hydrogen atoms facilitate homogenous dislocation nucleation.",

keywords = "Dislocation, Homogeneous nucleation, Hydrogen embrittlement, In situ nanoindentation, Nickel",

author = "Afrooz Barnoush and Horst Vehoff",

year = "2006",

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AU - Barnoush, Afrooz

AU - Vehoff, Horst

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N2 - The effect of hydrogen on dislocation nucleation is examined on Ni single crystals with (1 1 1) surface orientation with a specifically designed nanoindentation setup for in situ electrochemical experiments. This is the first time that hydrogen/deformation interaction has been studied in situ on a nanoscale under realistic conditions. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic plastic transition (pop-in) is studied in detail. Clear evidence is provided that hydrogen atoms facilitate homogenous dislocation nucleation.

AB - The effect of hydrogen on dislocation nucleation is examined on Ni single crystals with (1 1 1) surface orientation with a specifically designed nanoindentation setup for in situ electrochemical experiments. This is the first time that hydrogen/deformation interaction has been studied in situ on a nanoscale under realistic conditions. The effect of the electrochemical potential on the indent load-displacement curve, especially the unstable elastic plastic transition (pop-in) is studied in detail. Clear evidence is provided that hydrogen atoms facilitate homogenous dislocation nucleation.

KW - Dislocation

KW - Homogeneous nucleation

KW - Hydrogen embrittlement

KW - In situ nanoindentation

KW - Nickel

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DO - 10.1016/j.scriptamat.2006.03.041

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VL - 55

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EP - 198

JO - Scripta Materialia

JF - Scripta Materialia

IS - 2

ER -

Electrochemical nanoindentation: A new approach to probe hydrogen/deformation interaction

Abstract

Keywords

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