Results 11 to 20 of about 262,836 (345)
On deoxidation and modification of carbon steel
Литьë и металлургия, 2023 It has been shown that the elementary crystal cells of the basic products of deoxidation and modification of carbon steel, δ ferrite and austenite do not correspond to the principle of structural and dimensional correspondence of Dankov – Konobeevsky ...
E. I. Marukovich +2 more
doaj +1 more source
Photocatalytic reduction of CO2 over Ni-CuxO thin films towards formic acid production
Journal of Materials Research and Technology, 2023 Copper oxide (CuO) is an abundant and low-cost material, which is active as a photocatalyst under visible light due to its narrow band gap (1.3 eV). In the present work, CuO thin films at different Ni doping amounts (5, 10, and 30 % mol) were prepared ...
Luz I. Ibarra-Rodriguez +7 more
doaj +1 more source
On the anomalous shapes of native copper crystals from the Michigan Copper Country [PDF]
European Journal of Mineralogy, 2021 For over a century, the anomalous shapes of Michigan copper crystals from the Michigan Copper Country have been acknowledged. They are well known by mineral collectors and curated in museums from all around the world; still, their particular habits ...
J.-C. Boulliard, J. Aléon, E. Gaillou
doaj +1 more source
Assisting effect of Al2O3 on MnOx for NO catalytic oxidation
Green Energy & Environment, 2021 Various Mn-based catalysts for NO oxidation were prepared using MnOx as active compound, while TiO2 and Al2O3 were adopted as catalyst support. The performance of the catalysts was tested to study the effect of support on Mn-based catalyst activity ...
Denghui Wang +4 more
doaj +1 more source
ALUMINIUM BRONZE. NANOSTRUCTURAL PROCESSES OF MELTING AND MOULDING
Литьë и металлургия, 2018 It is shown that melting and molding of aluminum bronze are difficult physical and chemical processes. In them the major role is played by the centers of crystallization of dendrites of a a-phase, the a-phase nanocrystals dissolved and the adsorbed ...
E. I. Marukovich, V. Yu. Stetsenko
doaj +1 more source
TAP reactor investigation of methane coupling over samarium oxide catalysts [PDF]
, 1991 The adsorption and reaction characteristics of a Ba/Sr/Sm2O3 catalyst for methane coupling has been investigated using the TAP (Temporal Analysis of Products) reactor system. Pulsed adsorption experiments using methane, oxygen and krypton at temperatures
Fornasari, G. +5 more
core +2 more sources
Scientific problem of modifying of primary crystals a β -phase of silumin castings. Solutions
Литьë и металлургия, 2019 It is shown that the phosphorum which is contained in a silumin melt in number of 0,01–0,04% exists in the dissolved form. For a solution of the problem of modifying of primary crystals of a β -phase in silumin castings it is necessary to accept a ...
E. I. Marukovich, V. Yu. Stetsenko
doaj +1 more source
Temperature dependence of Cu:SnO2 film conductivity in air medium
Физико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023 Temperature conductivity studies of films based on Cu:SnO2 made by magnetron sputtering of the mixed target CuO/SnO2 have been carried out. Temperature conductivity dependencies were substantially nonlinear.
N.A. Klychkov, V.V. Simakov, I.V. Sinev
doaj +1 more source
Candidate Source of Flux Noise in SQUIDs: Adsorbed Oxygen Molecules. [PDF]
Physical Review Letters, 2015 A major obstacle to using superconducting quantum interference devices (SQUIDs) as qubits is flux noise. We propose that the heretofore mysterious spins producing flux noise could be O_{2} molecules adsorbed on the surface.
Hui Wang +5 more
semanticscholar +1 more source
Study program to develop and evaluate die and container materials for the growth of silicon ribbons [PDF]
, 1979 The development and evaluation of proprietary coatings of pure silicon carbide, silicon nitride, and aluminum nitride on less pure hot pressed substrates of the respective ceramic materials, is described.
Addington, L. A. +5 more
core +2 more sources