Results 71 to 80 of about 253,700 (370)
CURRENT STATE OF TUNGSTEN INDUSTRY IN RUSSIA
Известия Томского политехнического университета: Инжиниринг георесурсов, 2019 The relevance of the work is caused by the need to study the problems of the Russian tungsten industry. The aim of this research is to study the dynamics of commodity flows (production, import, export, consumption) of tungsten products (tungsten ...
Vitaly Yu. Khatkov, Grigory Yu. Boyarko
doaj +1 more source
, 2023 Volfram olarak da adlandırılan tungsten (W), çeliklerde sertliği ve dayanıklılığı arttırmada ve lamba filamanlarında kullanılan, periyodik tabloda 6. periyot 6B grubunda yer alan son derecede güçlü refrakter metal olan bir elementtir. Tungsten, olağandışı özelliklerinden dolayı elektronik haberleşme, havacılık ve uzay bilimi, malzeme ve kimya ...
openaire +2 more sources
Effects of laser scanning strategies on selective laser melting of pure tungsten
International Journal of Extreme Manufacturing, 2020 Three types of scanning strategies, including the chessboard scanning strategy, the zigzag scanning strategy and the remelting scanning strategy, were conducted to study the effects of scanning strategies on surface morphology, microstructure, mechanical
D. Gu +5 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.This article concerns room temperature tensile testing, with a range of (nominal) strain rates, of three titanium alloys. Stress–strain curves are analyzed to obtain creep characteristics. Profilometry‐based indentation plastometry testing is also covered, using different penetration velocities, and correlations established with tensile data.
Philip John McKeown +2 more
wiley +1 more source
Enhancing Solar Thermal Energy Conversion with Silicon-cored Tungsten Nanowire Selective Metamaterial Absorbers [PDF]
, 2020 This work experimentally studies silicon-cored tungsten nanowire selective metamaterial absorber to enhance solar-thermal energy harvesting, simply fabricated by conformally coating a thin tungsten layer onto a commercial silicon nanowire stamp. Scanning electron microscopy is used to characterize the morphology change before and after the tungsten ...
arxiv +1 more source
Frontiers in Microbiology, 2019 The tungsten–microbial interactions and microbial bioprocessing of tungsten ores, which are still underexplored, are the focus of the current study.
Amir Blazevic +5 more
doaj +1 more source
Deuterium blistering in tungsten and tungsten vanadium alloys
Fusion Engineering and Design, 2016 In order to evaluate D blistering behavior in W based plasma facing materials, rolled W and different grades of W-V targets were exposed to high flux of 1.2 × 1024 m−2 s−1, low energy (38 eV) D plasma at two different surface temperatures. The blistering behavior was investigated by means of scanning electron microscopy, accompanied by electron back ...
Arshad, Kameel +6 more
openaire +2 more sources
Journal of the American Chemical Society, 2017 The size-controlled synthesis of ultrasmall metal-based catalysts is of vital importance for chemical conversion technologies. Here, a cage-confinement pyrolysis strategy is presented for the synthesis of ultrasmall tungsten carbide nanoclusters ...
Yan‐Tong Xu +8 more
semanticscholar +1 more source
Advanced Engineering Materials, EarlyView.A novel technique for fabricating monolithic functionally graded NiTi shape memory alloy (SMA) laminated hybrid composite has been developed. An excellent metallurgical bonding can be established between two compositionally different NiTi SMAs through spark plasma sintering joining/diffusion bonding followed by hot roll bonding.
Soumya Sinha +2 more
wiley +1 more source
Transition from tunneling to direct contact in tungsten nanojunctions [PDF]
Phys. Rev. B 68, 035417 (2003), 2003 We apply the mechanically controllable break junctions technique to investigate the transition from tunneling to direct contact in tungsten. This transition is quite different from that of other metals and is determined by the local electronic properties of the tungsten surface and the relief of the electrodes at the point of their closest proximity ...
arxiv +1 more source