CHANGES IN THE STRUCTURE OF THE ALUMOPHOSPHATE COMPOSITION AT HIGH-TEMPERATURE DEFORMATION

A.U. Shayakhmetov, A.R. Khamidullin, A.K. Shayakhmetov, G.G. Akhmetshina, N.N. Vdovenko, I.V. Nedoseko
2018 Vestnik Bashkirskogo universiteta  
Optical microscopy, X-ray fluorescence elemental studies, and differential thermal analysis were used to study the structural transformations of the aluminophosphate composition under high-temperature strain under load. The studies have shown a strong compaction of the structure of the system, associated with the sintering of the composition. In addition, there is formation of aggregates, meta-and orthophosphates, glass phases, which regulate the quality characteristics of the aluminophosphate
more » ... e aluminophosphate composition. Loading changes phase composition and aggregation of the aggregates. The bounding is a "continuous" phase; the pores grow in size. The results of the studies enable predicting deformation of the ceramic composite during operation under high temperature conditions and optimizing the technology of manufacturing ceramic refractories with the required parameters. The ability of phosphate nanoset to form solid-phase structures with many fillers: oxides, silicates, aluminosilicates is used in the production of various refractory compositions. In the works on the technology of obtaining composite materials on inorganic bonds, the physical and chemical processes describing the kinetics of the formation of the microstructure at temperatures from 25 °C to 1650 °C were not properly studied. To determine the ability of a material to work stably at high temperatures, it is necessary to study the thermal processes occurring in aluminophosphate composites when heated under load.The purpose of this work is to study the effect of temperature, high-temperature strain, and loading of the aluminophosphate composition on the structure.
doi:10.33184/bulletin-bsu-2018.2.17 fatcat:k764l57dxzecrp64nodi2pi7am