This study presented the effect of pressure on density, porosity and flexural strength when cold isostatic press (CIP) was applied to compact ceramic powders in form insert cutting tools. Specific composition alumina (Al2O3) wt.90%, yittria stabilized zirconia (YSZ) wt.10%, chromium oxide(Cr2O3) wt.0.6% polyethylene glycol (PEG) were ball milled hand pressed green body inserts. These undergone ...

Current necessities of nuclear power plants have led to increase burn-up the fuel during operation. In this context, some undesirable processes, such as a higher release gaseous fission products, may occur. New UO2-based fuels are being developed by adding doping agents. Chromia (Cr2O3) has proved considerably enhance grain growth sintering, and thus promote retention these products. The study ...

Some recent considerations in three widely different aspects of high-temperature corrosion are summarized: 1) reactions at the metavscale interface in support of scale growth; 2) mass transfer effects in the control of evaporation of volatile reaction products; and 3) the codeposition of multiple elements for diffusion coatings using halide-activated cementation packs. The climb of misfit edge ...

increasing demands for cement, iron and steel industries for refractories with suitable workability in severeconditions (without any environmental risks), make the refractories’ researches to be an active area. refractories containing spinel has been developed with addition of chromia as a substitute in refractories using magnesite - chromite. in this research, different amounts of cr2o3 were a...

The ability to recover the oxygen reduction reaction of poisoned metal oxide surfaces, central many energy related applications, is demonstrated by controlling relative surface acidity.

In this work, physical phenomena related to the growth and phase formation of alumina, Al2O3, are investigated by experiments and computer calculations. Alumina finds applications in a wide variety of areas, due to many beneficial properties and several existing crystalline phases. For example, the α and κ phases are widely used as wear-resistant coatings due to their hardness and thermal stabi...

This research work investigated the effects of standard solution-annealed (SA) treatment on microstructure and chemical characteristics Inconel 718 (IN718) superalloys fabricated using tungsten inert gas welding based wire-arc additive manufacturing (WAAM) process. A commercial wrought IN718 product was also studied for comparison. It observed that WAAM parts developed highly-textured large col...