Results 191 to 200 of about 348,730 (268)

Constructing Pure Phase Tungsten-Based Bimetallic Carbide Nanosheet as an Efficient Bifunctional Electrocatalyst for Overall Water Splitting.

Small, 2020
Carbides are commonly regarded as efficient hydrogen evolution reaction (HER) catalysts, but their poor oxygen evolution reaction (OER) catalytic activities seriously limit their practical application in overall water splitting.
Jianpo Chen, B. Ren, H. Cui, Cheng-Xin Wang   +3 more
semanticscholar   +1 more source

Spectroscopic evaluation of tungsten carbide-titanium carbide composite prepared by arc plasma melting

, 2020
Tungsten carbide-titanium carbide composite of six different compositions (in the range 1−15 wt% TiC) prepared by arc plasma melting has been evaluated for the first time by spectroscopic methods such as X-ray photoelectron spectroscopy (XPS), micro ...
B. B. Nayak, T. Dash, S. Pradhan
semanticscholar   +1 more source

Oscillatory pressure sintering of binderless tungsten carbide

, 2020
Tungsten carbide ceramics were fabricated by a novel oscillatory pressure sintering process and the influence of sintering temperature on the microstructure and mechanical properties of tungsten carbide ceramics was investigated.
Yong Cheng, Tian-Bin Zhu, Jie Zhang, Ya-Wei Li, S. Sang, Zhi-Peng Xie   +5 more
semanticscholar   +1 more source

CEMENTED TUNGSTEN CARBIDE PNEUMOCONIOSIS

Acta Pathologica Japonica, 1978
An autopsy case of cemented tungsten carbide pneumoconiosis, the first lethal case in our country, is presented. A 28‐year‐old woman, who had been engaged in grinding presintered metallic matrix for four years, developed respiratory symptoms. X‐ray examinations were indicative of interstitial pulmonary fibrosis.
H, Kitamura, H, Kitamura, T, Tozawa, Y, Kimula   +3 more
openaire   +2 more sources

Wear analysis of Al 5052 alloy with varying percentage of tungsten carbide

INTERNATIONAL CONFERENCE ON MATERIALS, MANUFACTURING AND MACHINING 2019, 2019
Aluminium 5052 have its various applications in aerospace, fencing, hydraulic tubes and marine components due to their high dimensional stability, light in weight, high strength to weight ratio, economic and elevated stiffness.
Poonam Kishore, P. Kumar, Diwakar Singh Dinesh   +2 more
semanticscholar   +1 more source

Tungsten Oxide/Carbide Surface Heterojunction Catalyst with High Hydrogen Evolution Activity

, 2020
Tungsten carbide (WC) with imperfect structures determined by phase engineering and heteroatom doping has attracted a great deal of attention with respect to hydrogen evolution reaction (HER).
Yanglansen Cui, Xin Tan, Ke-Feng Xiao, Shen-Long Zhao, Nicholas M. Bedford, Yuefeng Liu, Zichun Wang, Kuang-Hsu Wu, Jian Pan, W. H. Saputera, Soshan Cheong, R. Tilley, Sean C. Smith, J. Yun, L. Dai, R. Amal, Da-Wei Wang   +16 more
semanticscholar   +1 more source

Production of Tungsten and Tungsten Carbide Powders

Powder Metallurgy and Metal Ceramics, 2019
A method has been developed to process waste of tungsten–cobalt solid solutions by potentiostatic dissolution in phosphoric acid solutions. A dissolution mechanism depending on the electrode potential has been proposed. A technique for extracting tungsten from tungsten concentrates in chloride–metasilicate melts has been developed.
V. V. Malyshev, N. F. Kushchevska
openaire   +1 more source

Low Temperature Tungsten, Tungsten Carbide and Tantalum Carbide Film Growth

MRS Proceedings, 2000
Abstract:Low temperature chemical vapor deposition of tungsten, tungsten carbide and tantalum carbide films on SiO2/Si(100) surfaces was studied by X-ray photoelectron spectroscopy (XPS) and electron microscopy. Tungsten carbide films were deposited using the W(CO)6precursor with and without ethylene over temperatures ranging from 250 to 500 °C.
Y.-M. Sun, S.Y. Lee, E. R. Engbrecht, K. Pfeifer, S. Smith, J. M. White, J. G. Ekerdt   +6 more
openaire   +1 more source

The defect structure of tungsten carbide in deformed tungsten carbide-cobalt composites

Acta Metallurgica, 1982
Abstract Defects in the hard carbide phase of deformed WC-Co composites have been analysed using TEM. Undissociated dislocations with Burgers vectors of 〈000〉, 1 3 〈1 2 10〉 and 1 3 〈1 2 13〉 have been found and these appear to be glissile on a variety of slip planes. Dissociated dislocations with Burgers vector 1 3 〈1 2
R.M Greenwood, M.H Loretto, R.E Smallman
openaire   +1 more source

Effect of tungsten carbide, silicon carbide and graphite particulates on the mechanical and microstructural characteristics of AA 5052 hybrid composites

Ceramics International, 2019
Reinforced aluminium metal matrix composite materials are being used extensively in diverse fields that include aerospace and automobile. In this investigation, we introduce two distinct and novel types of aluminium hybrid composites and characterize ...
D. S. E. J. Dhas, C. Velmurugan, K. L. D. Wins, K. P. Boopathiraja   +3 more
semanticscholar   +1 more source