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Features of combustion in the Mo-Si-B system: Part 2. Effect of mechanical activation
Allerton Press - Tập 56 - Trang 307-312 - 2015
E. I. Patsera, V. V. Kurbatkina, E. A. Levashov, N. A. Kochetov
This study is devoted to investigating the effect of mechanical activation (MA) on the kinetics and combustion mechanism of a reaction mixture in the Mo-Si-B ternary system, as well as ceramic material production by the self-propagating high-temperature synthesis (SHS) method. Elemental molybdenum, silicon, and boron powders are used as the initial components. The MA was carried out in a planetary...... hiện toàn bộ
Behavior of secondary alumina during heating
Allerton Press - Tập 51 Số 6 - Trang 447-450 - 2010
N. V. Vasyunina, I. P. Vasyunina, Yu. G. Mikhalev, А. М. Виноградов
A Novel Developed Grain Refiner (Al–Y–B Master Alloys) Using Yttrium and KBF4 Powders
Allerton Press - Tập 59 - Trang 50-55 - 2018
Rongfu Xu, Qingzhou Sun, Zhigang Wang, Yong Xu, Wencheng Ren
The present work aims to report and discuss the development of a novel grain refiner (Al–Y–B master alloys) focusing on the characterization of the phenomena that exist during their production. Al–Y–B master alloy is produced by the combined employment of yttrium and boron, instead of yttrium or boron individually. It is discovered as a highly effective grain refiner for inoculating the grain size...... hiện toàn bộ
Ammoniacal Dissolution of Polymetallic Alloy Produced from Waste Electroscrap
Allerton Press - - 2018
Ewa Rudnik, Iwona Dobosz, Grzegorz Włoch
Development of nanoparticle-reinforced alumocomposites for rocket-space engineering
Allerton Press - Tập 56 - Trang 325-328 - 2015
V. I. Kostikov, L. E. Agureev, Zh. V. Eremeeva
Some results of the development of a composite material based on sintered aluminum powder containing small additives of Al2O3 nanoparticles produced by the plasma-chemical method are described. The reasons for using small nanoparticle concentrations from the point of view of the role of interphase layer, Orowan hardening mechanism, etc., are given. Some properties and microstructure of produced al...... hiện toàn bộ
Thermal Stability of the Structure and Microhardness of the Al–0.05 vol % Al2O3 Nanocomposite Fabricated by Accumulative Roll Bonding
Allerton Press - Tập 60 - Trang 524-530 - 2019
K. V. Ivanov, E. A. Glazkova, S. V. Fortuna, T. A. Kalashnikova
The evolution of the microstructure and microhardness of the Al–0.05 vol % nAl2O3 nanocomposite (where nAl2O3 are aluminum nanoparticles) and aluminum without nanoparticles fabricated by accumulative roll bonding with annealing in a temperature range of 373–573 K is investigated. Ball-shaped Al2O3 nanoparticles with an average diameter of 50 nm are introduced between rolled plates of technically p...... hiện toàn bộ
Self-Propagating High-Temperature Synthesis of a Thin-Layer CuO–B–Glass System
Allerton Press - Tập 60 - Trang 426-433 - 2019
A. M. Shulpekov, O. V. Lapshin
Experimental studies are performed and mathematical models of the wave synthesis and thermal explosion in a thin-layer CuO–B–glass system are constructed. It is established that the propagation of the combustion front occurs in a multisource mode and its rate depends on the reaction layer thickness (d) according to the parabolic law with a maximum at d = 4 × 10–4 m. An increase in the reaction lay...... hiện toàn bộ
Reaction synthesis of the Ti2AlN MAX-phase
Allerton Press - Tập 58 - Trang 303-307 - 2017
D. Yu. Kovalev, M. A. Luginina, A. E. Sytschev
The Ti2AlN MAX-phase is synthesized by reaction sintering from Ti–AlN powder mixtures. The optimal synthesis mode of the compound containing less than 1% of the TiN impurity phase is established. It includes isothermal annealing at 1300°C for 2 h in argon at a pressure of 3 atm. The influence of the preliminary mechanical activation of the powder mixture and the reaction synthesis medium on the yi...... hiện toàn bộ
Investigation of froth flotation and selection of reagents on the basis of the mechanism of their effect: Report 1. Substantiation of the selected methods for investigation of the process
Allerton Press - Tập 50 - Trang 69-80 - 2009
V. I. Melik-Gaikazyan, N. P. Emel’yanova, P. S. Kozlov, T. I. Yushina, E. N. Lipnaya
Three strengthening components of the particle-bubble contact that emerges under the effect of appearance of the external detachment force f in the dynamic conditions of froth flotation are considered. These are the flexure of the bubble surface at the contact perimeter, the increase in the contact angle θ, and the local increase in the surface tension σ on the bubble surface near the perimeter of...... hiện toàn bộ
Preparation of nanosized zinc oxide by vacuum oxidation and behaviors of impurity elements
Allerton Press - Tập 56 Số 1 - Trang 114-118 - 2015
Rong Liang Zhang, Ai Bo Shi, Yecheng Jin
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