Effect of melting and microstructure on the microscale friction of silver-bismuth alloys

Bo He; Gautam Ghosh; Yip Wah Chung; Qian Wang

doi:10.1007/s11249-010-9606-4

Effect of melting and microstructure on the microscale friction of silver-bismuth alloys

Bo He^*, Gautam Ghosh, Yip Wah Chung, Qian Wang

^*Corresponding author for this work

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

7 Scopus citations

Abstract

This article reports an investigation of the effect of melting and microstructure on the microscale friction of several silver-bismuth alloys using a high-temperature nanoindentation-tribotesting system. These studies showed that friction increases with temperature before melting. We modeled these results as due to the softening of the alloys with increasing temperature, which appears to adequately explain the experimental trend. The friction behavior upon melting depends on the alloy composition. For some alloy composition, friction was observed to exhibit a sharp decrease upon melting, while for another alloy composition, friction was observed to keep increasing with temperature. This unusual behavior can be explained by the difference in microstructure and phase composition as a function of temperature among different Ag-Bi alloys.

Original language	English (US)
Pages (from-to)	275-282
Number of pages	8
Journal	Tribology Letters
Volume	38
Issue number	3
DOIs	https://doi.org/10.1007/s11249-010-9606-4
State	Published - Jun 2010

Keywords

Coefficient of friction
Indentation
Liquid metal lubrication
Low melting-point alloy
Nanoscale melting
Phase diagram

ASJC Scopus subject areas

Mechanics of Materials
Mechanical Engineering
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1007/s11249-010-9606-4

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title = "Effect of melting and microstructure on the microscale friction of silver-bismuth alloys",

abstract = "This article reports an investigation of the effect of melting and microstructure on the microscale friction of several silver-bismuth alloys using a high-temperature nanoindentation-tribotesting system. These studies showed that friction increases with temperature before melting. We modeled these results as due to the softening of the alloys with increasing temperature, which appears to adequately explain the experimental trend. The friction behavior upon melting depends on the alloy composition. For some alloy composition, friction was observed to exhibit a sharp decrease upon melting, while for another alloy composition, friction was observed to keep increasing with temperature. This unusual behavior can be explained by the difference in microstructure and phase composition as a function of temperature among different Ag-Bi alloys.",

keywords = "Coefficient of friction, Indentation, Liquid metal lubrication, Low melting-point alloy, Nanoscale melting, Phase diagram",

author = "Bo He and Gautam Ghosh and Chung, {Yip Wah} and Qian Wang",

note = "Funding Information: Acknowledgments The authors would like to express their sincere gratitude for the financial support from US Office of Naval Research (MURI N00014-04-0599), and US Department of Energy (DE-FC26-04NT42263), as well as the gift support by the Taiho Kogyo Company to B. He and Q. Wang. However, any opinions, findings, conclusions, or recommendations expressed herein are those of the authors and do not necessarily reflect the views of the sponsors. The authors would also like to thank Dr. Jim Smith from Micro Materials Ltd. for his helpful suggestions.",

year = "2010",

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doi = "10.1007/s11249-010-9606-4",

language = "English (US)",

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pages = "275--282",

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AU - He, Bo

AU - Ghosh, Gautam

AU - Chung, Yip Wah

AU - Wang, Qian

N1 - Funding Information: Acknowledgments The authors would like to express their sincere gratitude for the financial support from US Office of Naval Research (MURI N00014-04-0599), and US Department of Energy (DE-FC26-04NT42263), as well as the gift support by the Taiho Kogyo Company to B. He and Q. Wang. However, any opinions, findings, conclusions, or recommendations expressed herein are those of the authors and do not necessarily reflect the views of the sponsors. The authors would also like to thank Dr. Jim Smith from Micro Materials Ltd. for his helpful suggestions.

PY - 2010/6

Y1 - 2010/6

N2 - This article reports an investigation of the effect of melting and microstructure on the microscale friction of several silver-bismuth alloys using a high-temperature nanoindentation-tribotesting system. These studies showed that friction increases with temperature before melting. We modeled these results as due to the softening of the alloys with increasing temperature, which appears to adequately explain the experimental trend. The friction behavior upon melting depends on the alloy composition. For some alloy composition, friction was observed to exhibit a sharp decrease upon melting, while for another alloy composition, friction was observed to keep increasing with temperature. This unusual behavior can be explained by the difference in microstructure and phase composition as a function of temperature among different Ag-Bi alloys.

AB - This article reports an investigation of the effect of melting and microstructure on the microscale friction of several silver-bismuth alloys using a high-temperature nanoindentation-tribotesting system. These studies showed that friction increases with temperature before melting. We modeled these results as due to the softening of the alloys with increasing temperature, which appears to adequately explain the experimental trend. The friction behavior upon melting depends on the alloy composition. For some alloy composition, friction was observed to exhibit a sharp decrease upon melting, while for another alloy composition, friction was observed to keep increasing with temperature. This unusual behavior can be explained by the difference in microstructure and phase composition as a function of temperature among different Ag-Bi alloys.

KW - Coefficient of friction

KW - Indentation

KW - Liquid metal lubrication

KW - Low melting-point alloy

KW - Nanoscale melting

KW - Phase diagram

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JO - Tribology Letters

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IS - 3

ER -

Effect of melting and microstructure on the microscale friction of silver-bismuth alloys

Abstract

Keywords

ASJC Scopus subject areas

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