Laser surface alloying (LSA) of copper for electrical erosion resistance

P. K. Wong; C. T. Kwok; Hau Chung Man; F. T. Cheng

doi:10.1016/B978-0-85709-015-7.50008-7

Laser surface alloying (LSA) of copper for electrical erosion resistance

P. K. Wong, C. T. Kwok, Hau Chung Man, F. T. Cheng

Research output: Chapter in book / Conference proceeding › Chapter in an edited book (as author) › Academic research › peer-review

5 Citations (Scopus)

Abstract

In order to enhance the electrical erosion and corrosion resistance and hence the lifespan of copper for applying as the electrical contacts, surface modification employing various metals such as Cr, W, Ni, Al and Ti on copper was attempted using laser surface alloying with a 2.5. kW continuous wave (CW) Nd : YAG (yttrium aluminum garnet) laser. The microstructure, hardness, electrical erosion and corrosion resistance and interfacial contact resistance (ICR) of the laser-alloyed copper were compared with those of cold-drawn pure copper. Among all specimens, the laser-alloyed copper with Ti shows the most significant improvement in electrical erosion while the electrical conductivity can be preserved.

Original language	English
Title of host publication	Laser Surface Modification of Alloys for Corrosion and Erosion Resistance
Publisher	Elsevier Inc.
Pages	288-319
Number of pages	32
ISBN (Print)	9780857090157
DOIs	https://doi.org/10.1016/B978-0-85709-015-7.50008-7
Publication status	Published - 1 Mar 2012

Keywords

Corrosion
Electrical contact materials
Electrical erosion
Laser surface alloying

ASJC Scopus subject areas

General Engineering

More information

10.1016/B978-0-85709-015-7.50008-7

Cite this

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AU - Kwok, C. T.

AU - Man, Hau Chung

AU - Cheng, F. T.

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N2 - In order to enhance the electrical erosion and corrosion resistance and hence the lifespan of copper for applying as the electrical contacts, surface modification employing various metals such as Cr, W, Ni, Al and Ti on copper was attempted using laser surface alloying with a 2.5. kW continuous wave (CW) Nd : YAG (yttrium aluminum garnet) laser. The microstructure, hardness, electrical erosion and corrosion resistance and interfacial contact resistance (ICR) of the laser-alloyed copper were compared with those of cold-drawn pure copper. Among all specimens, the laser-alloyed copper with Ti shows the most significant improvement in electrical erosion while the electrical conductivity can be preserved.

AB - In order to enhance the electrical erosion and corrosion resistance and hence the lifespan of copper for applying as the electrical contacts, surface modification employing various metals such as Cr, W, Ni, Al and Ti on copper was attempted using laser surface alloying with a 2.5. kW continuous wave (CW) Nd : YAG (yttrium aluminum garnet) laser. The microstructure, hardness, electrical erosion and corrosion resistance and interfacial contact resistance (ICR) of the laser-alloyed copper were compared with those of cold-drawn pure copper. Among all specimens, the laser-alloyed copper with Ti shows the most significant improvement in electrical erosion while the electrical conductivity can be preserved.

KW - Corrosion

KW - Electrical contact materials

KW - Electrical erosion

KW - Laser surface alloying

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M3 - Chapter in an edited book (as author)

SN - 9780857090157

SP - 288

EP - 319

BT - Laser Surface Modification of Alloys for Corrosion and Erosion Resistance

PB - Elsevier Inc.

ER -

Laser surface alloying (LSA) of copper for electrical erosion resistance

Abstract

Keywords

ASJC Scopus subject areas

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