Fig. 1. TEM micrographs (left and middle) and diameter distribution (right) of the LAVA prepared zirconia nanoparticles.Figure optionsDownload full-size imageDownload as PowerPoint slide
X-ray diffraction was carried out for the 2Y/TZP starting powder mixture and for the LAVA nanopowder prepared from this GW4064 mixture by LAVA. XRD analysis revealed the complete conversion of the monoclinic ZrO2 into tetragonal ZrO2 (2θ between 27° and 33°) after the LAVA process, as shown in Fig. 2. Thus, the LAVA technique proved to be suitable to prepare 2Y/TZP nanopowders from a mixture of monoclinic zirconia and 3Y/TZP raw powders. However, spongy mesophyll is worth mentioning that the average size of the LAVA nanoparticles (d50 = 13.1 nm ± 0.5 nm) is below the threshold down to which m-ZrO2 can exist whereas the average particle size of the mixed powders is significantly higher (d50 = 300 nm).
Fig. 2. XRD patterns of the 3Y/TZP-TZ-0 (monoclinic) zirconia powder mixture before and after the LAVA process.Figure optionsDownload full-size imageDownload as PowerPoint slide