Vladimir V. Uglov

Phase Composition and Mechanical Properties Modification in Cr/Ti System by Short-Pulsed High Intensity Ion Beams Treatment

In the present the results of research of structure, phase composition and microhardness measurement of the surface layers of the Cr/Ti system treated by short-pulsed high intensity ion beams (HPIB) are presented. It was shown that the HPIB impact on a “coating/substrate” system can serve as an affective way to produce near-surface alloys in the metals. In particular, in the Cr/Ti system the formation of solid solution β-Ti (Cr) as well as titanium carbide TiCx was revealed. The found changes in structure and phase composition of titanium caused by the HPIB impact allow to increase its microhardness in 2 times.

NANO-SIZED SPHERICAL CLUSTERS OF TANTALUM SILICIDE FORMED BY COMPRESSION PLASMA FLOW

A pre-deposited tantalum thin film on a Si(100) substrate was treated by compression pulsed plasma flow. SEM images demonstrated the formation of spherical clusters with multi-level structures. Formation of crystalline metal rich tantalum silicides is confirmed by X-ray diffraction and EDX elemental map analysis. The results show great potential application of compression plasma flow for the development of novel nanostructured metal-silicide materials.