spherulitic carbon

spherulitic carbon
n
as used in Test Method D5061, a spherical anisotropic carbon form sometimes referred to as thermal black that is formed by the deposition of carbon concentrically around a nucleus. D5061

ASTM D121-09a Standard Terminology of Coal and Coke. 2014.

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Look at other dictionaries:

  • depositional carbon — n as used in Test Method D5061, a group of carbon forms that are formed from cracking and nucleation of gas phase hydrocarbon molecules during coal carbonization. D5061 • pyrolytic carbon sooty carbon spherulitic carbon …   Coke&Coal Terminology

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  • igneous rock — Any of various crystalline or glassy, noncrystalline rocks formed by the cooling and solidification of molten earth material (magma). Igneous rocks comprise one of the three principal classes of rocks, the others being metamorphic and sedimentary …   Universalium

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