Search results
Results From The WOW.Com Content Network
Silicon carbide was a useful material in jewelry making due to its abrasive properties, and this was the first commercial application of the Acheson process. [3] In the 1940s, first the Manhattan Project and then the Soviet atomic bomb project adopted Acheson process for nuclear graphite manufacturing (see details there).
Edward Goodrich Acheson (March 9, 1856 – July 6, 1931) was an American chemist. [1] Born in Washington, Pennsylvania, he was the inventor of the Acheson process, which is still used to make silicon carbide (carborundum). [2] [3] Acheson founded the Carborundum Company in 1891 [4] and became a manufacturer of carborundum and synthetic graphite.
Aquadag is a trade name for a water-based colloidal graphite coating commonly used in cathode ray tubes (CRTs). It is manufactured by Acheson Industries, a subsidiary of ICI. The name is a shortened form of "Aqueous Deflocculated Acheson Graphite", [1] but has become a generic term for conductive graphite coatings used in vacuum tubes. Other ...
Acheson's technique for producing silicon carbide and graphite is named the Acheson process. In 1896, Acheson received a patent for his method of synthesizing graphite, [68] and in 1897 started commercial production. [16] The Acheson Graphite Co. was formed in 1899. Synthetic graphite can also be prepared from polyimide and then commercialized ...
The silica fume, which is a byproduct of producing silicon metal and ferrosilicon alloys, can also be converted to SiC by heating with graphite at 1,500 °C (2,730 °F). [18] The material formed in the Acheson furnace varies in purity, according to its distance from the graphite resistor heat source. Colorless, pale yellow and green crystals ...
With a neutron absorption cross section of 4.97 mbarns, the AGOT graphite is considered as the first true nuclear-grade graphite. [34] By November 1942, National Carbon had shipped 255 short tons (231 t) of AGOT graphite to the University of Chicago, [35] where it became the primary source of graphite to be used in the construction of Chicago ...
Graphite – (Acheson process) Heavy water, used to refine radioactive products – (Girdler sulfide process) Hydrogen – (water–gas shift reaction, steam reforming) Lead (and bismuth) – (Betts electrolytic process, Betterton-Kroll process) Nickel – (Mond process) Nitric acid – (Ostwald process)
In this paper, she defined graphitizing carbons as those that can transform into crystalline graphite by being heated to 3,000 °C (3,270 K; 5,430 °F), while non-graphitizing carbons do not transform into graphite at any temperature. Precursors that produce graphitizing carbon include polyvinyl chloride (PVC) and petroleum coke.