Carbides applications

Desulfogypsum, 4 591-593, 595 Desulfurization, 1 650 10 785 Desulfurizing reagents, calcium carbide application, 4 549-550 Deswelling process, for solvent removal, 28104... 

F. Meunier, P. Delporte, B. Heinrich, C. Bounchy, C. Crouzet, C. Pham-Huu, P. Panis-sod, J. Lerou, P. Mills and M. Ledoux, Synthesis and characterization of high specific surface area vanadium carbide application to catalytic oxidation, J. Catal., 169, 33—44 (1997). 

Rocklinizer, Electronic tungsten carbide application equipment, Rocklin Manufacturing Co. 

Acetylene was discovered m 1836 by Edmund Davy and characterized by the French chemist P E M Berthelot m 1862 It did not command much attention until its large scale preparation from calcium carbide m the last decade of the nineteenth century stim ulated interest m industrial applications In the first stage of that synthesis limestone and coke a material rich m elemental carbon obtained from coal are heated m an electric furnace to form calcium carbide... 

CARBmES - SILICON CARBIDE] (Vol4) in therapeutic applications [ENZYME APPLICATIONS - THERAPEUTIC] (Vol 9)... 

ECAKEsters for Coating Applications, Brochure F-48S89A, Union Carbide Corp., Conn., 1988. 

Nuclear Applications. Use of the nitrides of uranium-235 and thorium as fuels and breeders in high temperature reactors has been proposed (see Nuclearreactors). However, the compounds most frequently used for this purpose are the oxides and carbides. Nitrides could be useful in high... 

UCAR Alcohols for Coatings Applications, Brochure F-48588, Solvents and Coatings Materials Division, Union Carbide Chemicals and Plastics Corp., Danbury, Conn., Sept. 1984. 

J. J. Burke, ed.. Powder Metal Migh-Peformance Applications, Proceedings of the 18th S agamore Army Material Kesearch Conference, Syracuse University Press, Syracuse, N.Y., 1972. Review on siUcon carbide—siUcon nitride ceramics. 

ISO Recommendation R-513, Application of Carbides for Machining by Chip Eemoval, 1st ed.. International Organisation for Standardization, Nov. 

T. J. Kosolapova, Carbides Properties, Production and Applications, Plenum Press, New York, 1971. 

For a large number of applications involving ceramic materials, electrical conduction behavior is dorninant. In certain oxides, borides (see Boron compounds), nitrides (qv), and carbides (qv), metallic or fast ionic conduction may occur, making these materials useful in thick-film pastes, in fuel cell apphcations (see Fuel cells), or as electrodes for use over a wide temperature range. Superconductivity is also found in special ceramic oxides, and these materials are undergoing intensive research. Other classes of ceramic materials may behave as semiconductors (qv). These materials are used in many specialized apphcations including resistance heating elements and in devices such as rectifiers, photocells, varistors, and thermistors. 

Seal Face Combinations The dynamic of seal faces is better understood today. Seal-face combinations have come a long way in the past 8-10 years. Stellite is being phased out of the petroleum and petrochemical applications. Better grades of ceramic are available, cost of tungsten has come down, and relapping of tungsten are available near most industrial areas. Silicon carbide is being used in abrasive service. 

ANSI/IEEE-C62.2/1994 Guide for application of gapped silicon carbide surge arrester for a.c. systems ... 

An appreciation of statistical results can be gained from a study conducted to support the first application of computer control for an ethylene oxide production unit at Union Carbide Corporation in 1958. For the above purpose, twenty years of production experience with many units was correlated by excellent statisticians who had no regard for kinetics or chemistry. In spite of this, they did excellent, although entirely empirical work. One statement they made was ... [ethane has a significant effect on ethylene oxide production.] This was rejected by most technical people because it did not appear to make any sense ethane did not react, did not chemisorb, and went through the reactor unchanged. 

The original drive for the development of modem carbon fibers, in the late-1950s, was the demand for improved strong, stiff and lightweight materials for aerospace (and aeronautical) applications, particularly by the military in the West. The seminal work on carbon fibers in this period, at Union Carbide in the U.S.A., by Shindo, et al, in Japan and Watt, et al, in the U.K., is well-documented [4-7]. It is always worth pointing out, however, that the first carbon fibers, prepared from cotton and bamboo by Thomas Edison and patented in the U.S.A. in 1880, were used as filaments in incandescent lamps. 

Tobiason furnishes us with two examples of EP formulations for electronic encapsulation and primer coating applications as shown in Tables II and 12, respectively [213]. The coating formula was obtained from a Union Carbide Technical Bulletin. 

Carbide-based cermets have particles of carbides of tungsten, chromium, and titanium. Tungsten carbide in a cobalt matrix is used in machine parts requiring very high hardness such as wire-drawing dies, valves, etc. Chromium carbide in a cobalt matrix has high corrosion and abrasion resistance it also has a coefficient of thermal expansion close to that of steel, so is well-suited for use in valves. Titanium carbide in either a nickel or a cobalt matrix is often used in high-temperature applications such as turbine parts. Cermets are also used as nuclear reactor fuel elements and control rods. Fuel elements can be uranium oxide particles in stainless steel ceramic, whereas boron carbide in stainless steel is used for control rods. 

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