9 research outputs found
Phase transformation behavior of ZrO2 by addition of carbon nanotubes consolidated by spark plasma sintering
Commercial ZrO2/carbon nanotube (CNT) composite powders were sintered by spark plasma sintering (SPS). The densification
behavior during SPS was investigated by analysis of recorded shrinkage plots, and addition of CNTs was found to alter the sintering
mechanism. Moreover, the addition of CNTs could also lead to refined grain size, improved fracture toughness as well as reduced
Vickers hardness. Raman spectroscopy revealed an initially decreasing and then increasing tendency for the tetragonal to monoclinic
phase transformation during indentation of the composites