The paper deals with the investigation of selected physical – chemical properties of inorganic melts with respectto behaviour of surfaces. An explorational approach was applied in order to acquire original data enablingextension of the existing databases of material properties. The research itself was realised on a series ofsamples of oxidic melts obtained by incremental additions of CaO. Temperature was another criterion for observationof changes of properties of investigated systems. The obtained data describing their macroscopic behaviourwere then interpreted on the basis of realised X-ray diffraction analyses and published theories onstructures of ionic melts. This confrontation made it possible to complete theoretical notions of physical – chemicalproperties of melts, which worked so far only with homogenous systems.
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