Original scientific paper

Synthesis and characterization of hardened Cu-Fe-Ni-P alloy

G. Brovč ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia
G. Dražič ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia
B. Karpe ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia
I. Djordjević ; University of Belgrade, School of Dental Medicine, Belgrade, Serbia
G. Lojen ; University of Maribor, Faculty of Mechanical Engineering, Maribor, Slovenia
B. Kosec ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia
M. Bizjak ; University of Ljubljana, Faculty of Natural Sciences and Engineering, Ljubljana, Slovenia

Abstract

In the manufacturing industry of electrical contacts, the prohibition of the use of toxic metals (Cd, Be), and desire to avoid the alloying with precious metals (Ag) has created a need for new alloys with good electrical conductivity and high mechanical properties at elevated temperatures. As a potentially useful material for this purpose, we have analyzed the continuously cast Cu-Fe-Ni-P alloy in various heat treatment conditions. Sequence of phase transformations during heat treatment was followed by 4 point D.C. electrical resistivity measuring method, and analyzed by scanning (SEM) and transmission (TEM) electron microscopy. Measurements of Vickers hardness and electrical conductivity after various heat treatment procedures indicate on high potential of Cu-Fe-Ni-P alloys as a material for electrical contacts.

Keywords

copper alloys; precipitation hardening; electrical contacts; electrical conductivity

Hrčak ID:

126672

URI

https://hrcak.srce.hr/126672

Publication date:

1.1.2015.

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