نتایج جستجو برای: cr2o3

تعداد نتایج: 857  

Journal: :Journal of The Serbian Chemical Society 2021

The catalyst coking and production of undesired products during the transformation propane into propylene have been critical challenges in on purpose approach production. mechanism contributing to this challenge was theoretically investigated through analysis cracking reaction routes. study carried out employed use a density functional theory cluster order understand reactions that promote sear...

Journal: :The Mining-Geological-Petroleum Engineering Bulletin 2023

The rapid development of industry increases the demand and importance chromium. In this study, beneficiation possibilities representative chromite ore taken from Tokat Province with a laboratory type jig, spiral concentrator, shaking table multi gravity separator (MGS) were investigated. Appropriate particle size fractions fed into each device. Experimental studies shown as flow chart. gave bes...

Journal: :Journal of the Ceramic Association, Japan 1978

Journal: :Journal of Nuclear Materials 2021

The anticipated benefits of large grains in Cr2O3-doped UO2 pellets include improved mechanical and fission gas retention properties. To support the assessment release (FGR) from doped pellets, impact doping on diffusivity for in-reactor conditions must be understood. In this work, we tackle issue by informing model within BISON fuel performance code using material models developed at atomic sc...

In plasma sprayed nanostructured composite coatings with ceramic matrix, the feedstock must consist of nanoparticles of appropriate specifications. In this research, the procedure for production of Cr2O3-Ag agglomerated nanostructured composite powder to produce comosite coatings has been investigated. Nanopowders of Cr2O3 with 0, 2, 5, and 10 volume percentages of silver were dispersed to obta...

Journal: :Metals 2023

Focusing on the serious volatilization of MoO3 in super austenitic stainless steel with a high Mo content, influence B formation oxide film and distribution Cr was investigated at 900 °C 1000 °C. Without addition B, tends to diffuse surface, forming porous Cr/Mo-rich oxides, causing Mo. The can inhibit diffusion facilitate surface combines O, providing conditions for nucleation Cr2O3. A large a...

Journal: :Journal of Applied Physics 2022

We report on growth and electrical properties of α-Ga2O3 films prepared by halide vapor phase epitaxy (HVPE) at 500 °C α-Cr2O3 buffers predeposited sapphire magnetron sputtering. The showed a wide microcathodoluminescence (MCL) peak near 350 nm corresponding to the bandgap sharp MCL line 700 due Cr+ intracenter transition. Ohmic contacts Cr2O3 were made with both Ti/Au or Ni, producing linear c...

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