Al-Si/7.5 wt.%Y2O3 coatings were prepared on Mg alloy with laser cladding to enhance the wear and corrosion resistance of substrate. The influence power microstructure properties coating discussed. results uncovered that consisted primarily Mg2Si, Mg17Al12, Mg2Al3, Al4MgY, α-Mg phases. Through calculating, it was observed crystal size decreased decrease in power. Y2O3 gave a better strengthenin...

The influence of Fe2O3 additions on the microstructure, mechanical properties and translucence zirconia with 3 mol-% or 5 Y2O3 was evaluated. Samples were pressed different thickness sintered at 1475, 1500, 1550 1600°C for 2 h. Density, phases, roughness, strength translucency analyzed. All samples showed densification greater than 99%. After sintering 1600°C, phase analysis revealed only tetra...

Abstract. Cubic crystalline oxides such as Y2O3 and MgO is used to stabalized zirconia phases at high temperature. In this paper the Y2O3 powder was added to stabilized zirconia and preparing a mixture of MgAl2O4 Spinel by mixing 1mol of nano-MgO with 1 mol of nano-Al2O3 powders. The spinel was added to the Y2O3-ZrO2 by various weight percentage (5, 10, 15, 20 and 25 wt%), and after that the sp...

The Xihuashan granitic complex (southern China) is mainly composed of coarse-grained porphyritic biotite granite (G–a), medium-grained porphyritic biotite granite (G–b), and mediumto fine-grained porphyritic biotite granite (G–c). The G–a granite is characterized by monazite-(Ce) and xenotime-(Y), in addition to commonly observed zircon and uranoan thorite. In the G–b and G–c intrusive units, m...

High-k gate dielectrics are used to suppress excessive transistor gate leakage and power consumption could speed up the introduction of metal gates in complementary metal oxide semiconductor (CMOS) transistors. Many new oxides are being evaluated as gate dielectrics, such as Al2O3, Y2O3, La2O3, Gd2O3, HfO2, ZrO2, and TiO2, BaZrO3, ZrSiO4 and HfSiO4. Ru, RuO2 and SrRuO3 gate electrodes grown on ...

This paper is concerned with high-T, superconducting compounds produced by metal-organic chemical vapour deposition. The nanostructure of different types of interfaces yttria stabilized zirconia buffer / (l-102)-sapphire substrate, YBazCu307-, film / Y2O3 precipitates as well as YBa2Cu307-, film / (001)-NdGa03, -SrTiO3, and -MgO substrates has been investigated by high resolution electron micro...