Results 71 to 80 of about 347,742 (199)
Scientific ReportsIn order to elucidate the diffusion behaviour of ions in alumina during the anodic alumina process, the effects of electric field strength, hydration content, and electrolyte on amorphous alumina and hydrated alumina were studied using ab initio ...
Zeyu An, Shiyang Sun, Binghai Dong
doaj +1 more source
Impulse mechanical strength improvement of alumina by surface coating
Cailiao gongchengTo increase the impulse mechanical strength of alumina, the pore structure of alumina was modified by surface coating. It was found that the impulse mechanical strength of alumina samples coated with aluminum chloride increases from 35 MPa to 51 MPa and ...
CHEN Zhiqiang +5 more
doaj +1 more source
Removal of Iron, Zinc, and Copper Impurities from Sodium Aluminate After the Bayer Process
MetalsThis study investigates the influence of specific surface area (SSA) and aluminum hydroxide particle size on sodium aluminate’s purification efficiency in the Bayer process.
Vladimir Damjanović +6 more
doaj +1 more source
Zirconia toughened SiC whisker reinforced alumina composites small business innovation research [PDF]
The objective of this phase 1 project was to develop a ceramic composite with superior fracture toughness and high strength, based on combining two toughness inducing materials: zirconia for transformation toughening and SiC whiskers for reinforcement ...
Lee, C. T. +3 more
core +1 more source
International Journal of High Technology Ceramics, 1986 Relatively large Al2O3 disc particles (16μm, 41μm) with high aspect ratios (5-20) were incorporated into a fine-grain Al2O3 matrix (-1μm) in order to improve the mechanical properties of sintered Al2O3. The flexural strength depends on the disc size and the microstructure of composites.
Tetsuo UCHIYAMA +2 more
openaire +2 more sources
Kaolin as a Source of Silica and Alumina For Synthesis of Zeolite Y and Amorphous Silica Alumina
MATEC Web of Conferences, 2018 Kaolin is the clay mineral which containing silica (SiO2) and alumina (Al2O3) in a high percentage, that can be used as a nutrient in the synthesis of zeolites and amorphous silica alumina (ASA).
Sri Rahayu Endang +7 more
doaj +1 more source
Single Crystal Membranes [PDF]
Single crystal a- and c-axis tubes and ribbons of sodium beta-alumina and sodium magnesium beta-alumina were grown from sodium oxide rich melts. Additional experiments grew ribbon crystals containing sodium magnesium beta, beta double prime, beta triple ...
Morrison, A., Stormont, R. W.
core +1 more source
Low temperature catalytic ignition of hydrogen and oxygen [PDF]
, 1972 Catalyst composed of 32 percent iridium metal supported on granular alumina is most active and most stable of platinum metal catalysts.
Armstrong, W. E. +2 more
core +1 more source
The effect of ion plated silver and sliding friction on tensile stress-induced cracking in aluminum oxide [PDF]
A Hertzian analysis of the effect of sliding friction on contact stresses in alumina is used to predict the critical load for crack generation. The results for uncoated alumina and alumina coated with ion plated silver are compared.
Sliney, Harold E., Spalvins, Talivaldis
core +1 more source
Journal of Materials Research and TechnologyThis paper reports on the successful synthesis of a novel alumina powder with a unique rose-like structure composed of alumina platelets, using the molten salt method.
Dazhao Liu +7 more
doaj +1 more source