nanocomposite of zro2/zno was prepared under ultrasonic irradiation by sol gel process from directly mixing zirconium and zinc gels. the mixture was placed under ultrasonic irradiation for 2 hours. after the aging time and filtration of the reaction mixture, the filtrated composite gel was calcinated at 500 °c for 3h in furnace. the precursor gels of zirconium and zinc were prepared from dissol...

This article described the protective properties of Cr coatings with a barrier layer composed ZrO2/Cr multilayers deposited onto E110 zirconium alloy. The multilayer thickness 100, 250, and 750 nm single-layer (1.5 µm) ZrO2 were obtained by multi-cathode magnetron sputtering in Ar + O2 atmosphere. Then, cracking resistance oxidation behavior studied under conditions thermal cycling (1000 °C) ai...

NanoTiO2 , nanoZrO2 and TiO2 /ZrO2 nanocomposite were prepared via sol gel method by using ultrasonic irradiation. The precursor sol of zirconium was prepared from an aqueous solution of ZrCl4 and titanium tetra 2-propoxide was diluted by 2-propanol and deionized water The TiO2 /ZrO2 nanocomposite was synthesized from directly mixing Titanium dried gel into Zirconium gel. The reaction mixture w...

This experimental study tackles the question how oxide ceramics (ZrO2 and HfO2) respond to the simultaneous exposure to two extreme conditions, pressures up to several ten GPa and irradiation with highly energetic (MeV-GeV) heavy ion projectiles. The combination of these two extreme conditions influences the materials in ways none of those two conditions alone could. In both materials, the expo...

The AlCoCrFeNi powder was added to WC as a binder and Y2O3/ZrO2 doped by the wet chemical method grain-growth inhibitors. WC-Y2O3-ZrO2-10AlCoCrFeNi composite powders were sintered spark plasma sintering obtain an alloy. microstructure properties of cemented carbide studied. result showed that rare-earth-oxide (Y2O3/ZrO2)-refined grain size alloy high-entropy provided with better hardness toughn...