Laminar copper-intermetallics composite - generation and properties
Marek Konieczny Politechnika Świętokrzyska, Katedra Metaloznawstwa i Technologii Materiałowych al. 1000-lecia PP 7, 25-314 Kielce
Quarterly No. 4, 2006 pages 52-55
DOI:
keywords: metals, alloys, composites, surface properties
abstract Copper-intermetallic compound layered composites with different ratio of thickness of copper layers to intermetallics layers have been fabricated from elemental copper band and titanium foil. This article is devoted to examination of the composite structure and its properties. Using X-ray microprobe analysis the intermetallic compounds: Cu4Ti, Cu2Ti, CuTi (Fig. 4) were identified in the composite. The predominant part of the phases layer is Cu4Ti, the richest compound in copper in Cu-Ti binary phase diagram (Figs. 5 and 6). Results show that the hardness of the intermetallics layers in composite is about seven time higher than hardness of the copper layers. Tribological tests showed that wear resistance of the composites increases with increase of thickness of intermetallics layers and is similar to that of CuSn8 bronze (Fig. 7).