Friction transitions in nanocrystalline nickel

S. V. Prasad; C. C. Battaile; P. G. Kotula

doi:10.1016/j.scriptamat.2010.12.027

Friction transitions in nanocrystalline nickel

S. V. Prasad
, C. C. Battaile
, P. G. Kotula

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

84 Scopus citations

Abstract

Nanocrystalline Ni films with 20-100 nm size grains exhibited either of two distinct friction behaviors, μ ∼ 0.30-0.35 or μ ∼ 0.6-0.7, depending upon the contact pressure and sliding speed. Friction-induced changes to grain structure were analyzed by cross-sectional transmission electron microscopy of wear surfaces. Formation of stable ultrafine nanocrystalline layers with 2-10 nm size grains underneath the wear surface may be responsible for the observed friction transitions, possibly due to a transition from traditional dislocation plasticity to deformation controlled by grain boundaries. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	729-732
Number of pages	4
Journal	Scripta Materialia
Volume	64
Issue number	8
DOIs	https://doi.org/10.1016/j.scriptamat.2010.12.027
State	Published - Apr 1 2011
Externally published	Yes

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title = "Friction transitions in nanocrystalline nickel",

abstract = "Nanocrystalline Ni films with 20-100 nm size grains exhibited either of two distinct friction behaviors, μ ∼ 0.30-0.35 or μ ∼ 0.6-0.7, depending upon the contact pressure and sliding speed. Friction-induced changes to grain structure were analyzed by cross-sectional transmission electron microscopy of wear surfaces. Formation of stable ultrafine nanocrystalline layers with 2-10 nm size grains underneath the wear surface may be responsible for the observed friction transitions, possibly due to a transition from traditional dislocation plasticity to deformation controlled by grain boundaries. {\textcopyright} 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",

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doi = "10.1016/j.scriptamat.2010.12.027",

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T1 - Friction transitions in nanocrystalline nickel

AU - Prasad, S. V.

AU - Battaile, C. C.

AU - Kotula, P. G.

PY - 2011/4/1

Y1 - 2011/4/1

N2 - Nanocrystalline Ni films with 20-100 nm size grains exhibited either of two distinct friction behaviors, μ ∼ 0.30-0.35 or μ ∼ 0.6-0.7, depending upon the contact pressure and sliding speed. Friction-induced changes to grain structure were analyzed by cross-sectional transmission electron microscopy of wear surfaces. Formation of stable ultrafine nanocrystalline layers with 2-10 nm size grains underneath the wear surface may be responsible for the observed friction transitions, possibly due to a transition from traditional dislocation plasticity to deformation controlled by grain boundaries. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

AB - Nanocrystalline Ni films with 20-100 nm size grains exhibited either of two distinct friction behaviors, μ ∼ 0.30-0.35 or μ ∼ 0.6-0.7, depending upon the contact pressure and sliding speed. Friction-induced changes to grain structure were analyzed by cross-sectional transmission electron microscopy of wear surfaces. Formation of stable ultrafine nanocrystalline layers with 2-10 nm size grains underneath the wear surface may be responsible for the observed friction transitions, possibly due to a transition from traditional dislocation plasticity to deformation controlled by grain boundaries. © 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

UR - https://www.scopus.com/pages/publications/79951514750

U2 - 10.1016/j.scriptamat.2010.12.027

DO - 10.1016/j.scriptamat.2010.12.027

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VL - 64

SP - 729

EP - 732

JO - Scripta Materialia

JF - Scripta Materialia

IS - 8

ER -

Friction transitions in nanocrystalline nickel

Abstract

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