Results 201 to 210 of about 25,648 (262)

Effect of silver doping on the band gap tuning of tungsten oxide thin films for optoelectronic applications. [PDF]

Heliyon
Arifuzzaman M, Saha T, Podder J, Al-Bin F, Das HN.   +4 more
europepmc   +1 more source

Ultraviolet Light-Induced Surface Changes of Tungsten Oxide in Air: Combined Scanning Transmission Electron Microscopy and X-ray Photoelectron Spectroscopy Analysis. [PDF]

Nanomaterials (Basel)
Nakagawa Y, Shiratsuchi Y, Shibayama T, Takeguchi M.   +3 more
europepmc   +1 more source

Oxidation of tungsten and tungsten carbide in dry and humid atmospheres

Metal Powder Report, 1997
openaire   +1 more source

Tungsten Oxide Coated Liquid Metal Electrodes via Galvanic Replacement as Heavy Metal Ion Sensors. [PDF]

Sensors (Basel)
Bhagwat S, Hambitzer L, Prediger R, Zhu P, Hamza A, Kilian SK, Kluck S, Pezeshkpour P, Kotz-Helmer F, Rapp BE.   +9 more
europepmc   +1 more source

The Counterbalancing Role of Oxygen Vacancy between the Electrochromic Properties and the Trapping Effect Passivation for Amorphous Tungsten Oxide Films. [PDF]

Small Sci
Zhang Z, Mo H, Li R, Zhou X, Lin Z, Zhang J, Tang X, Zhan Y, Luo J.   +8 more
europepmc   +1 more source

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Tungsten Oxide Nanowires on Tungsten Substrates

Nano Letters, 2002
A simple method was discovered to prepare tungsten oxide nanowires directly from tungsten metal. The structure and composition of the nanowires were characterized by high resolution tunneling electron microscopy (HRTEM) and energy dispersive X-ray scattering (EDX), respectively.
Gu, G., Zheng, B., Han, W., Roth, S., Liu, J.   +4 more
openaire   +2 more sources

Sequential oxidation and reduction of tungsten/tungsten oxide

Thin Solid Films, 2015
Abstract The reduction of oxide films on the surface of tungsten was studied. The oxide films were created by briefly exposing smooth W foils to oxygen plasma generated using a microwave discharge at 500 W and an oxygen pressure of 40 Pa. Oxidation resulted in the formation of a WO3 film with a thickness of approximately 1700 nm. The oxidised samples
Vesel, Alenka, Mozetič, Miran, Balat-Pichelin, Marianne   +2 more
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Reduction of tungsten oxide to tungsten metal

Metallurgical Transactions B, 1976
Tungsten oxide, WO2.96, was reduced toα-W in hydrogen for various time periods over the temperature range 500°C to 900°C. Intermediate oxides were determined using X-ray diffraction analysis of the semireduced powders. Several dopant conditions were used, to find the effect on oxide structures and reaction kinetics of the usual dopants K, Si and Al ...
Theodore R. Wilken, William R. Morcom, Charles A. Wert, John B. Woodhouse   +3 more
openaire   +1 more source

Chemistry of Tungsten Oxide Bronzes

International Journal of Refractory Metals and Hard Materials, 1995
Abstract Ammonium paratungstate (APT) is the generally accepted starting material in tungsten manufacturing. The dopants, which are responsible for the non-sag properties, are given to some tungsten oxide bronze (TOB)-type compounds which are formed by thermal reductive decomposition of APT.
L. Bartha, A.B. Kiss, T. Szalay
openaire   +1 more source