Freitag, 24. Oktober 2014, 15:00 - 16:30 iCal

Prof. Carlos Angelo Nunes /

Departamento de Engenharia de Materiais (DEMAR),
Escola de Engenharia de Lorena (EEL),

Universidade de Sao Paulo

"Phase equilibria in the metal-rich region of ME-SI-B systems (Me: metal from IV, V and VI groups)"

Seminarraum II der Fakultät für Chemie
Währinger Straße 42, 1090 Wien


For several years, alloys from the Me-Si-B (Me- metal from the IV, V and VI groups) ternary systems have received considerable attention aiming the development of high temperature structural materials. Assuming that any real application of these materials will rely on multicomponent alloys, as is the case of Ni-base superalloys, phase equilibria data become an important issue. Together with our scientific collaborators, we have provided new information on binaries Me-B and Me-Si system as well as provided original phase relations data in ternary Me-Si-B systems. In general, the alloys are prepared via arc melting and heat-treated at temperatures as high as 2300oC. The materials in both as-cast and heat-treated conditions are characterized through X-ray diffraction, scanning electron microscopy (SEM), and selected alloys via wavelength dispersive spectroscopy (WDS).

The purpose of this talk is to present a general view of the information found on these investigations, which allow a better knowledge of phase equilibria in these ternary systems.


Fakultät für Chemie


Brigitte Schwarz
Fakultät für Chemie der Universität Wien