Pitak Y. Fire-resistant and heat resisting unforming materials on the basis of the system RO-R2O3-RO2-P2O5 compositions.

The thesis is devoted to develop scientific conception of creation of fire-resistant and heat resisting materials on the basis of the system RO-R2O3-RO2-P2O5 compositions. The sub-solidus structure of the fourcomponent systems has been investigated: M-A-S-P, C-А-S-P, Zn-Z-S-B, Zn-A-Z-S, C-M-S-P, A-Z-S-P, M-Z-S-P, C-A-S-B, C-A-Z-S, C-M-A-S, C-Sr-A-Z. The coexisted phases in the systems have been determined, the tetrahedration for quaternary systems have been carried out, the volumes elementary tetrahedrons have been determined, the topological characteristic of phases of systems have been given. On the basis of phisic-chemical researches of the systems the principles of reception new fire-resistant and heat resisting unforming materials have been developed. New compositions of materials on the base of rafractories and cements with high physical, mechanical and technical properties have been developed. The principles of phase-formation have been set up and the principles of obtaining these materials have been worked out.