Cast ceramics by metallothermic SHS under elevated argon pressure

Abstract

Cast ceramic composites were prepared by metallothermic SHS under elevated Ar pressure (5 MPa). Variation in green composition was used to affect the phase composition of combustion products. Under some optimized conditions, resultant ceramics can be obtained in the form of Al₂O₃–Cr₂O₃ solid solutions, Al₂O₃–Cr₂O₃ ∙ хZrO₂ composites or single-phase Al2MgO4. Such materials seem promising for use in jewelry, process engineering (casting molds, cutting tools), and aerospace industry.