Use of IR Spectroscopy, X-Ray Diffraction, and Petrographic Analysis to Evaluate Structural Changes in Aluminophosphate Compositions at Creeping

Abstract

The present study is an attempt to evaluate the structural changes observed in ceramic compositions based on aluminum oxide and phosphate H3PO4binders at creeping using IR spectroscopy, X-ray diffraction, and pectrographic analysis. The study reports the dependence of structural changes on the composition of the compounds, the type of phosphate binder, the temperature of processing, and the test conditions at creeping. On the basis of the test results and the data obtained elsewhere [1–7], it is surmised that the deformation process of phosphate compositions at high temperatures and loads is connected with a change in the physicochemical characteristics of the material and, as a consequence, with a change in its structure. It is revealed that the mechanism of deformation of aluminophosphate material at creeping depends primarily on the change in the matrix structure that cements the grains of electrocorundum in the material.