Development of W-Cu-Ni Electrical Contact Materials with Enhanced Mechanical Properties by Spark Plasma Sintering Process

• Authors: M. Lungu , V. Tsakiris , E. Enescu , D. Pătroi , V. Marinescu , D. Tălpeanu , D. Pavelescu , Gh. Dumitrescu , A. Radulian
• Languages of publication: EN

Abstracts

EN

This study reports on the development of some W-Cu-Ni materials for use as electrical contacts for low voltage vacuum switching contactors for nominal currents up to 630 A. The contact materials with 85 wt% W, 12-14 wt% Cu and 1-3 wt% Ni were obtained by spark plasma sintering process in vacuum. From very finely dispersed W-Cu-Ni powder mixtures there were produced sintered electrical contact pieces that were investigated in terms of physical, microstructural, mechanical, and functional properties. The material sintered at 1200C exhibited a near fully dense structure with very low porosity and enhanced mechanical properties: hardness of maximum 480 HV1 and elastic modulus of maximum 220 GPa and low chopping current of maximum 1.77 A.

Keywords

EN

81.16.-c; 81.05.Ni; 81.07.Wx; 81.20.Ev

Discipline

• 81.05.Ni: Dispersion-, fiber-, and platelet-reinforced metal-based composites
• 81.07.Wx: Nanopowders
• 81.16.-c: Methods of micro- and nanofabrication and processing(for femtosecond probing of semiconductor nanostructures, see 82.53.Mj in physical chemistry and chemical physics)
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2014
• Volume: 125
• Issue: 2
• Pages: 327-330

Dates

published

2014-02

Contributors

author

M. Lungu

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

V. Tsakiris

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

E. Enescu

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

D. Pătroi

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

V. Marinescu

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

D. Tălpeanu

• National Institute for Research and Development in Electrical Engineering, ICPE-CA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

D. Pavelescu

• POLITEHNICA University of Bucharest (UPB), Splaiul Independenţei no. 313, 060042, Bucharest - 6, Romania

author

Gh. Dumitrescu

• Icpe SA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

author

A. Radulian

• Icpe SA, Splaiul Unirii no. 313, 030138 Bucharest - 3, Romania

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Identifiers

DOI

10.12693/APhysPolA.125.327