Speaker
Prof.
Muzi Ndwandwe
(University of Zululand)
Description
Solid state compound phase formation has been investigated between thin metal films (Co, Hf, Ni, Pd and Pt) and VO2 substrates using RBS and XRD. The thin-film couples were annealed from 45 min to 1 hr between 400 and 900 degrees centigrade. It was found that Hf reacts with VO2 whereas Co, Ni, Pd and Pt do not. Heats of reaction were calculated for all possible combinations of the vanadium alloy and metal oxide reaction products. Comparison with experimental results show in all cases that reactions take place for negative heats of reaction. Results obtained correlete well with a Miedema parameter providing a way of predicting a reaction.
Primary author
Prof.
Muzi Ndwandwe
(University of Zululand)
Co-authors
Mrs
Betty Kibirige
(University of Zululand)
Prof.
Ouassini Nemraoui
(University of Zululand)
Mr
Percy Sefage
(University of Zululand)
Mr
Thembinkosi Nyawo
(University of Zululand)
