Original scientific paper
Synthesis reactions and thermodynamics of compound formation during MoMn layer sintering
Lidija I. Belič
; Institute for Electronics and Vacuum Technique, Teslova 30, 61000 Ljubljana, Slovenia
Alenka S. Kosmos
; Institute for Electronics and Vacuum Technique, Teslova 30, 61000 Ljubljana, Slovenia
Abstract
Chemical reactions and thermodynamics of high temperature alumina metallization have been investigated. During the firing of MoMn paste, reactions start with oxidation of manganese. The formed Mn3O4 reacts with alumina and SiO2 at a temperature lower than 1200 °C. The formation of the metallizing layer is a consequence of lowering of the free energy of the system. It is caused by redox and dissolution reactions, the formation of the glass phase and crystallization process from the liquid phase. With available thermodynamical data and according to the atmospheric conditions, some reactions were predicted and confirmed by X-ray diffraction.
Keywords
Hrčak ID:
299461
URI
Publication date:
2.5.1995.
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