MoO 2 as a phase transformation promoter from tetragonal to mono-zirconia and surface strengthening method of the zirconia-alumina composite using the same

摘要

The present invention relates to zirconia (ZrO₂) As a phase transformation accelerator from tetragonal to mono-phase, MoO₂Is used. ZrO₂0.02 to 2.0% MoO₂Are mixed and heat-treated to form a single crystal ZrO₂ZrO /RTI ₂-MoO₂Alloy is obtained, and this MoO₂Heat treatment of the zirconia-alumina composite in the presence of the atmosphere provides a surface strengthened alumina-zirconia composite.