Structure and properties of dynamically compacted powder of copper and mixture of copper-chromium

   
A.I.Khomenko
 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Omeliana Pritsaka str.,3, Kyiv, 03142, Ukraine
Electrical Contacts and Electrodes - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2016, #13
http://www.materials.kiev.ua/article/2356

Abstract

Changes in the structure, electrical conductivity and mechanical properties of compacted by impact compaction dynamic mixture of copper powder and copper powder with chromium Cu—5 composition (% (vol.)) Cr in vacuum in the temperature range 750—950 °C discussed. It was found that the dynamic hot-pressing creates the conditions for the formation of high-quality non-porous structure that is characteristic of the cast materials. In these conditions it is possible to obtain materials that are close to the mechanical properties of hardened copper, they can be used as electric contact material for various purposes.


THE STRENGTH CHARACTERISTICS, COPPER, COPPER-BASED COMPOSITES, DYNAMIC IMPACT EXTRUSION, MICROSTRUCTURE