Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8000621 | Journal of Alloys and Compounds | 2014 | 8 Pages |
Abstract
A set of nanocomposite Cu-Cr powders with the grain size of these immiscible metals below 5 nm were prepared by high-energy ball milling. The powders were then consolidated by short-term (5 min) spark plasma sintering at 700-900 °C under pressure (50 MPa) to obtain essentially pore-free pseudo-alloys. The grain sizes in the produced bulk materials remained within the ranges 5-60 nm for Cr-based phase and 200-300 nm for Cu-based matrix. These nanocomposites have a Vickers microhardness up to 3.9 GPa and a specific electrical resistivity in the range 6-9.6 μΩ cm, which make them promising candidates for the application in high-voltage circuit breakers.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
N.F. Shkodich, A.S. Rogachev, S.G. Vadchenko, D.O. Moskovskikh, N.V. Sachkova, S. Rouvimov, A.S. Mukasyan,