Title of article :
Microstructure and phase composition of ZrO2–MgO structural ceramic after high-temperature deformation
Author/Authors :
T Czeppe، نويسنده , , P Zieba، نويسنده , , W Baliga، نويسنده , , E Dobrev، نويسنده , , A Pawlowski، نويسنده ,
Issue Information :
دوهفته نامه با شماره پیاپی سال 2003
Abstract :
The ZrO2–13 mol% MgO ceramic was investigated by using transmission electron microscopy (TEM) and X-ray diffraction after partial sub-eutectoid decomposition, and after high-temperature compression up to 10% at 900 °C. The sub-eutectoid decomposition led to the formation of ZrO2 tetragonal precipitates. The high-temperature deformation enhanced the transformation of the cubic ZrO2 (c-ZrO2) matrix to tetragonal ZrO2 (t-ZrO2), while existing tetragonal precipitates and part of the matrix were partially transformed to monoclinic ZrO2 (m-ZrO2). Numerous deformation bands composed of martensite plates were observed in the matrix.
Keywords :
High-temperature compression , TEM , Phase composition , Mg–partially-stabilized zirconia , High toughness ceramic
Journal title :
Materials Chemistry and Physics
Journal title :
Materials Chemistry and Physics