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carbide
silicon carbide
silicon carbide chemical compound, SiC, that forms extremely hard, dark, iridescent crystals that are insoluble in water and other common solvents. Widely used as an abrasive, it is marketed under such familiar trade names as Carborundum and Crystolon. It is heat resistant, decomposing when heated to about 2,700°C; it is used in refractory materials, e.g., rods, tubes, firebrick, and in special parts for nuclear reactors. Very pure silicon carbide is white or colorless; crystals of it are used in semiconductors for high-temperature applications. Silicon carbide fibers, added as reinforcement to plastics or light metals, impart increased strength and stiffness. Silicon carbide is prepared commercially by fusing sand and coke in an electric furnace at temperatures above 2,200°C; a flux, e.g., sodium chloride, may be added to eliminate impurities. Silicon carbide was discovered (1891) by E. G. Acheson; early studies of it were made by Henri Moissan.
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Carbide merger gets mixed reviews: ; Employees worried about company's future in valley
Newspaper article from: Charleston Daily Mail; 12/2/1999; ; 700+ words
; ...BUSINESS EDITOR Past and present Union Carbide workers voiced mixed feelings about the...Valley. Several said they are sad the Carbide name and blue hexagon logo will disappear. Union Carbide's shareholders voted overwhelmingly Wednesday...
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LOCALLY PRODUCED CARBIDE RECEIVES PRESSURES FROM IMPORTED PRODUCTS
Magazine article from: Indonesian Commercial Newsletter; 2/28/1997; 700+ words
; The domestic demand for calcium carbide has continued to hike with the growth...especially the gas industry. However, local carbide, which is produced exclusively by PT...has been less competitive than imported carbide products. This is so because imported...
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Calcium carbide output increases rapidly.(MARKET REPORT: Inorganics)(Statistical data)
Magazine article from: China Chemical Reporter; 10/6/2006; ; 700+ words
; ...first half of 2006 The output of calcium carbide in China was 8.9457 million tons in...to conduct rectification to the calcium carbide sector and the trend of redundant construction...of 2006, the oversupply in the calcium carbide market had no effective change. The price...
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Carbides in High-Speed Steels Containing Silicon
Magazine article from: Metallurgical and Materials Transactions; 9/1/2004; ; 700+ words
; ...and amount of eutectic carbides in the high-speed...sub 2^C eutectic carbide almost disappears in...temperature of primary MC carbide in the high-speed...undissolved M^sub 6^C carbide very obviously. The...undissolved M^sub 6^C carbides. The amount of MC and...
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Carbide cutting and grinding
Magazine article from: FDM; 5/1/2005; ; 700+ words
; Learn the basics of grinding carbide tooling to make it work for you. The hardest part of using carbide tooling may be getting started, especially...the whole process of cutting or grinding carbide. At first it may seem overwhelming, but...
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Carbide vs. Diamond Tooling.(Point/Counterpoint)
Magazine article from: Wood Digest; 12/1/2007; 700+ words
; Carbide vs. Diamond Tooling Representatives from Royce//Ayr, Safranek Enterprises and Carbide Processors discuss the differences between...Provide a cost/benefit analysis on carbide vs. diamond tooling. Gene Veening, president...
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Making carbide form tools with EDM. (electrical discharge machining)
Magazine article from: Modern Machine Shop; 1/1/1989; ; 700+ words
; Making Carbide Form Tools With EDM This progressive screw machine shop uses carbide for 90 percent of its form tools. Every tool is...house with wire EDM. There is little dispute that carbide tools cut faster and longer than high speed steel...
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Carbide spurns GAF again
Newspaper article from: Chicago Sun-Times; 1/3/1986; 700+ words
; ...yesterday increased its takeover offer for Union Carbide Corp. again, but Union Carbide rejected the sweetened offer and unveiled new...last week. In rejecting the latest offer, Union Carbide said it would accept more than 50 percent of its...
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Carbide whiskers shrink to nanometer size. (researchers have developed silicon carbide filaments under 30 nanometers in diameter)(Brief Article)
Magazine article from: Science News; 7/8/1995; ; 700+ words
; ...The tiny fibers of silicon carbide used to strengthen airplane...Lieber found the niobium carbide nanorods to be superconducting and the iron carbide ones ferromagnetic. Hongjie...nanorods out of different carbides. "In principle, you can...
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Carbide precipitation and high-temperature strength of hot-rolled high-strength, low-alloy steels containing Nb and Mo
Magazine article from: Metallurgical and Materials Transactions; 6/1/2002; ; 700+ words
; ...strength of a Nb carbide have been investigated...analysis of the carbides has been performed...distributed metal carbide (MC)-type carbides, while the carbides...diffusivity of the carbide-forming species...precipitation of MC carbides. These findings...
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Union Carbide Corporation
Book article from: International Directory of Company Histories
Union Carbide Corporation 39 Old Ridgebury Road Danbury...Major James T. Morehead produced calcium carbide, resulting in acetylene. These two chemicals...city and home lighting, and the Union Carbide Company was formed in 1898 to manufacture...
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The Carbide/Graphite Group, Inc.
Book article from: International Directory of Company Histories
The Carbide/Graphite Group, Inc. One Gateway Center...Basic Inorganic Chemical Manufacturing The Carbide/Graphite Group, Inc. produces massive...to form these electrodes; and calcium carbide and related products for use as fuel...
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carbide
Book article from: The Columbia Encyclopedia, Sixth Edition
...acetylene and is an important source of the gas. Barium carbide reacts similarly. Aluminum carbide reacts with water to yield methane. Some carbides are unaffected by water, e.g., chromium carbide and silicon carbide . Silicon carbide, almost as...
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silicon carbide
Book article from: The Columbia Encyclopedia, Sixth Edition
silicon carbide chemical compound, SiC, that forms extremely...for nuclear reactors. Very pure silicon carbide is white or colorless; crystals of it...high-temperature applications. Silicon carbide fibers, added as reinforcement to plastics...
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calcium carbide
Book article from: World Encyclopedia
calcium carbide ( calcium acetylide ) Chemical (CaC 2 ) made commercially by heating coke and calcium oxide (CaO) in an electric furnace . It reacts with water to yield ethyne . Calcium carbide is also used to manufacture ethanoic acid and ethanal , as well as fertilizers.
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