Influence of free chromium oxide on some properties of ceramics made of lanthanum chromite

Abstract

deformation in the steady stage of creep (%'h -I) which sets in only after 350-400 h soaking. Hence, for the stated parameters, when testing for creep, for the stabilization of the structure in the refractories being studied we require a time for the order of several hundred hours. CONCLUSIONSThe creep curves for porous refractories under monoaxial compression can be described by the Andrade equation, the parameters of which depend on the nature of the macroscopic structural changes in the material.With significant densification or embrittlement of the specimens in the testing procedure during deformation the degree factor in the equation e = 8TP + q[, p ~ 89 if the structure of the specimen does not undergo marked changes then the degree factor is close to the classic value (p = 1/3). LITERATURE CITEDi. S. N.