Results 151 to 160 of about 394 (178)

Zirconium boride as a novel negative catalyst for vanadium redox flow battery

Ceramics International, 2021
Abstract Poor hydrophilicity and low electrochemical activity of carbon-based electrode materials limit the wide application of vanadium redox flow battery (VRFB). The electrochemical properties of electrodes are generally optimized by acid treatment, heat treatment or the introduction of catalysts. Nowadays, there are mainly three types of catalysts
Tongxue Zhang, Yingqiao Jiang, Zixuan Zhang, Jing Xue, Yuehua Li, Yongguang Liu, Zhongsheng Chen, Zongbo Xie, Zhanggao Le, Lei Dai, Ling Wang, Zhangxing He   +11 more
openaire   +1 more source

Preparation of alloys of zirconium boride and molybdenum disilicide and determination of some of their properties

Soviet Powder Metallurgy and Metal Ceramics (English Translation of Poroshkovaya Metallurgiya), 1965
M A Kuzenkova, P S Kislyi, Kislyi P S
exaly   +2 more sources

Zinc oxide film growth on zirconium boride

Superlattices and Microstructures, 2006
Abstract ZnO film growth on sapphire and zirconium boride single crystals by the molecular beam epitaxy method was investigated. A Zn metal film could not be grown on sapphire substrates at room temperature, while an incommensurate Zn film could be grown on a zirconium boride substrate. The incommensurate Zn film could be oxidized by molecular oxygen
Shunichi Hishita, Takashi Aizawa, Shigeki Otani, Shigeru Suehara, Hajime Haneda   +4 more
openaire   +1 more source

A reactive force-field for Zirconium and Hafnium Di-Boride

Computational Materials Science, 2013
Abstract Zirconium and Hafnium Di-Boride are the two major material systems that are of critical importance for applications in ultra-high temperature environments where both oxidation and mechanical damage mechanisms (such as creep) are operative.
Afif Gouissem, Wu Fan, Adri C.T. van Duin, Pradeep Sharma   +3 more
openaire   +1 more source

X-ray photoelectron spectroscopic study of the surface of borided zirconium

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1984
X-ray photoelectron spectroscopy (X.p.s.) using depth profiling and angle-resolved studies has been used to investigate the surface of borided zirconium. The study shows that there is considerable surface oxidation which may seriously limit some practical applications of the borided sample.
P. Hugh Middleton, Alan J. Paul, Peter M. A. Sherwood   +2 more
openaire   +1 more source

Synthesis of zirconium, hafnium and their ternary borides by a polymer complex route

Journal of Sol-Gel Science and Technology, 2015
Submicrometer (100–500 nm) zirconium diboride powders were synthesized by a polymer complex route using simple and mainly nontoxic starting reagents. In this aqueous process, chitosan was used as a coordinating polymer to immobilize the metal ion and boric acid in the molecular so as to inhibit the segregation of various components in the dried gel ...
Chunlei Yan, Rongjun Liu, Changrui Zhang, Yingbin Cao   +3 more
openaire   +1 more source

Gas-impermeable protective thermocouple sheaths from zirconium boride

Soviet Powder Metallurgy and Metal Ceramics, 1965
A study was made with the object of producing gas-impermeable sheaths from zirconium boride with 5% Mo additions and of testing such sheaths under industrial conditions. It is shown that the liquid phase which forms during sintering as a result of the reaction of molybdenum with zirconium boride gives rise to substantial shrinkage and helps to obtain ...
P. S. Kislyi, M. A. Kuzenkova
openaire   +1 more source

Nanotechnology for Encapsulating Zirconium Boride upon Formation of Heat-Resistant Coatings

Glass Physics and Chemistry, 2005
The reaction formation of ZrB2- and SiO2-based composite materials and coatings upon heat treatment of the initial components in open air is investigated. It is shown that the glass melt formed in the course of the chemical reaction encapsulates zirconium boride particles, thus imparting high-temperature strength to the composite material.
I. B. Ban’kovskaya, M. P. Semov, A. E. Lapshin, T. G. Kostyreva   +3 more
openaire   +1 more source

Carbothermic method of preparation of chromium, molybdenum, and zirconium borides

Soviet Powder Metallurgy and Metal Ceramics, 1966
1. The feasibility was established of producing, on an industrial scale, chromium, molybdenum, and zirconium borides from oxides of these elements, boric acid, and lampblack. 2. The influence of charge composition, reaction temperature, and boat travel velocity in the furnace on the composition of the resulting chromium, molybdenum, and ...
openaire   +1 more source

Deposition of zirconium boride thin films by direct current triode sputtering

Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, 1987
Specular, crack-free thin films of the refractory conductor zirconium boride have been deposited for possible applications in combined contact/diffusion barrier metallization schemes. Films were deposited by dc triode sputtering, which allowed the independent study of the effects of sputtering pressure, target voltage, and current on the film ...
U. K. Chakrabarti, H. Barz, W. C. Dautremont-Smith, J. W. Lee, T. Y. Kometani   +4 more
openaire   +1 more source