Effect of microscale shear stresses on the martensitic phase transformation of nanocrystalline tetragonal zirconia powders

Stabilization of metastable tetragonal zirconia nanocrystallites by surface modification

“…Highly porous nanocrystalline tetragonal zirconia powders were synthesized as previously described [17] by controlled hydrolysis of ZrOCl 2 followed by careful calcination. The tetragonal zirconia powder is extremely porous and has specific surface area of ~150 m 2 /g.…”

Microstructure characterization and deposition mechanism studies of ZrO2 thin films deposited by LI-MOCVD

“…The vacuum in the reactor was provided by a pump, and the exhaust was collected in a liquid nitrogen trap. The polished Si {1 0 0} wafers Surface & Coatings Technology 218 (2013) [7][8][9][10][11][12][13][14][15][16] (2 cm * 2 cm) were used as substrates. The precursor solution was prepared in an argon day glove box, loaded and sealed in the glass tube, and then the tube was installed into the liquid supply system and pressurized with N 2 .…”

“…The tetragonal phase of ZrO 2 is suggested to be stabilized through their small crystallite size [7][8][9][10][11], and a critical size for the tetragonal phase stabilization was proposed [7,8]. Recently, the high compressive internal stress level [12][13][14] and matrix constraint [15] were reported to have effects on the critical size for tetragonal phase stabilization. The deposition conditions strongly affect the microstructure and the internal stress, which determine the tetragonal phase stabilization of the deposited films.…”

Inhibition of surface bound carbonate stabilization of tetragonal zirconia

“…Highly porous (specific surface area of ~150 m 2 /g) nanocrystalline tetragonal zirconia powders were synthesized as previously described [7,8] by controlled hydrolysis of ZrOCl 2 followed by careful calcination. The synthesized t-ZrO 2 powders were kept in water-free environment for further treatment to prevent the t→m phase transformation which is induced by exposure to water vapor [9,10].…”