MICROSTRUCTURE AND CRYSTAL ORIENTATION RELATIONSHIPOF ZrO₂ LAMINATED CERAMICS

The micro-appearance feature , the formation of twin lines of monoclinic , the phase transformation and thecrystal orientation relationship of ZrO₂ laminated ceramics were studied by scanning electron micro scope (SEM) ,transmission electron microscope ( TEM) , X-rays instruments , etc1The experiment results show that the interface compressivestresses can decrease the rate of the grains growth , control the transformation of tetragonal during sintering , raise theamount of the transformable tetragonal , strengthen the effect of the transformation effect , but do not change the orientation relation between tetragonal and monoclinic phase , while (100) m/ / (010) t still exist1