α-Al2O3
Recovery of Silver from the Nitrate Leaching Solution of a Spent Ag/α Al2O3 Catalyst by Solvent Extraction and Reduction
... The concentration of the recovered HNO3 was 0.99 mol/dm3, which allows it to be used directly in the leaching of the spent α-Al2O3/Ag catalyst.24 3.4 Production of silver powder by reduc[r] ...
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Multi-step Electrophoretic Deposition of α-Al2O3 Nanoparticles on Carbon Substrate (TECHNICAL NOTE)
... Response modification factors (R-factor) are used in current seismic building codes to reduce earthquake forces associated with seismic design level to determine force level[r] ...
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Texture Development of α Al2O3 Ceramic Coatings by Aerosol Deposition
... Basal slip, basal twinning, and slip along the 0001 ¯ direction have plane having a Burgers vector with 1010 been observed under shock loading at room temperature in sapphire30.. Further[r] ...
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Influence of Interface Structure on Schottky Barrier Heights of α Al2O3(0001)/Ni(111) interfaces: A First Principles Study
... As analyzed above, the relation between the O-terminated and Al-terminated interfaces, and the relation among the three models with each type of interface stoichiometry can be well expla[r] ...
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Nano α Al2O3 for removal of Hg(II) from water: Adsorption and desorption studies
... Effect of adsorbent dosage: A total of five portions of 30 ml of 0.80 mg/ml Hg 2+ standard solution, were respectively placed into five of 100-ml beakers. The pH value was respectively adjusted to 3.5. A total of five ...
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Partial acetylene hydrogenation over commercial Pd-Ag/α-Al2O3 catalyst promoted by ionic liquid
... maintenance over time along with longstanding of the catalyst, are critical in catalytic reactions. In this work, the stability was evaluated considering catalyst activity shift as a function of time-on-stream for 48 h ...
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Formation of environmentally-persistent free radicals (EPFR) on α-Al2O3 clusters
... Overall, this study has a three-fold aim; (i) to report modes of interaction of phenol with di ff erent hydration coverages of alumina clusters, (ii) to compare between the catalytic acti[r] ...
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Characterization of Phosphate Interaction with α Al2O3 in Aqueous Solution
... The increase of phosphate initial concentration implies an increase in adsorption capacity and a decrease in adsorption rate. In the concentrations range studied, no saturation is observed (Figure 6). The experimental ...
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Time resolved optically stimulated luminescence and spectral emission features of α Al2O3:C
... 3.2 Measurement temperature and time-resolved luminescence spectra 3.2.1 Temperature dependence of luminescence lifetimes: Influence of shallow traps and retrapping The temperature depen[r] ...
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Nucleation of Fe Rich Intermetallic Phases on α Al2O3 Oxide Films in Al Si Alloys
... metallics, experiments have been conducted under conditions where formed in situ oxide films were present. Some Fe-rich intermetallics are observed to be related with the oxide films in the microstructure, the present ...
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Effects of mechanical properties of polymer on ceramic polymer composite thick films fabricated by aerosol deposition
... When polymers with different mechanical properties, such as polyimide PI and polymethyl methacrylate PMMA, are used as starting powders together with α-Al2O3 powder, two types of composi[r] ...
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Effect of Reinforcement on Abrasive wear of Different Aluminium based Metal Matrix Composite-A Review
... Composites were fabricated using stir-cast technique. Composites having different particle sizes and volume fraction of fly ash are designated as follows: composites with 6 vol. % fly ash particle (sieved), (C6S), ...
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Improving Wear Resistance of Cutting Tool by coating
... coated, Al2O3 coated and TiC/Al2O3/TiN coated tools were examined and their flank wear and the resultant machined work piece surface finish were ...The Al2O3 coated tool showed a decrease of around ...
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Fabrication and Mechanical Properties of Al Based In Situ Nano Composites Reinforced by Al2O3 and Intermetallic Compounds
... Moreover, the nano size of ª-Al2O3 particulates are distributed near the interpenetrated microstructure of ª-Al2O3 as investigated in the previous work.7 In the case of the reactive hot [r] ...
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Phase Relations in Si Al Y O C Systems
... shown in Table 1. The 20 g powder mixture was mixed and ground in an agate mortar for 1.5 - 2 hrs by adding alcohol (analytical reagent, 99.9% purity). After dried up, the prepared powders were cold isostatic pressed un- ...
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A comparative study of double layers Al2O3/Al2O3 and Al2O3/SiO2 prepared by microwave and natural drying
... 3 Cross sectional images of sintered double layers ceramic structure Al2O3 / Al2O3 that dried using different technique; a microwave, b natural... Ismail et al., Int.[r] ...
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A Comparative Study of Double Layers Al2O3/Al2O3 and Al2O3/SiO2 Prepared by Microwave and Natural Drying
... In natural drying, larger grains were obtained in the sintered double layered ceramic structure and this is opposite from the microwave drying where the application of microwave has s[r] ...
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Influence of Content of Al2O3 on Structure and Properties of Nanocomposite Nb B Al O films
... The films showed a typical nanocomposite microstructure with crystalline NbB2 grains embedded in a matrix of an amorphous Al2O3 phase in higher content of Al2O3.. Continuing increasing t[r] ...
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Comparative Analysis on Performance of Refrigeration Systems using Nano Refrigerants
... ABSTRACT: Refrigeration systems are widely used around the world, taken together- they are one of the factors for climate change. Amid global debate on climate change, there have been researches on enhancing performance ...
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Direct Growth of Al2O3 on Black Phosphorus by Plasma Enhanced Atomic Layer Deposition
... To understand the impact of the pretreatment of O2 plasma and different oxygen precursors on Al2O3 growth in freshly exfoliated BP samples, Al2O3 deposition on BP was realized by three a[r] ...
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