clay-graphite crucible

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• Crucible — Cru ci*ble (kr[udd] s[i^]*b l), n. [LL. crucibulum a hanging lamp, an earthen pot for melting metals (cf. OF. croisel, creuseul, sort of lamp, crucible, F. creuset crucible), prob. of German origin; cf. OHG. kr[=u]sul, LG. kr[ u]sel, hanging lamp …   The Collaborative International Dictionary of English

• Crucible — For other uses, see Crucible (disambiguation). A modern crucible used in the production of silicon ingots via the Czochralski process A crucible is a container used for metal, glass, and pigment production as well as a number of modern laboratory …   Wikipedia

• crucible — /krooh seuh beuhl/, n. 1. a container of metal or refractory material employed for heating substances to high temperatures. 2. Metall. a hollow area at the bottom of a furnace in which the metal collects. 3. a severe, searching test or trial.… …   Universalium

• Hessian crucible — Crucible Cru ci*ble (kr[udd] s[i^]*b l), n. [LL. crucibulum a hanging lamp, an earthen pot for melting metals (cf. OF. croisel, creuseul, sort of lamp, crucible, F. creuset crucible), prob. of German origin; cf. OHG. kr[=u]sul, LG. kr[ u]sel,… …   The Collaborative International Dictionary of English

• crucible furnace — ▪ metallurgy       metallurgical furnace consisting essentially of a pot of refractory material that can be sealed. Crucibles of graphite or of high grade fire clay were formerly used in the steel industry, heated directly by fire; modern high… …   Universalium

• crucible — noun /ˈkɹuː.sɪ.bəl/ a) A cup shaped piece of laboratory equipment used to contain chemical compounds when heating them to very high temperatures. b) A heat resistant container in which metals are melted, usually at temperatures above 500°C,… …   Wiktionary

• steel — steellike, adj. /steel/, n. 1. any of various modified forms of iron, artificially produced, having a carbon content less than that of pig iron and more than that of wrought iron, and having qualities of hardness, elasticity, and strength varying …   Universalium

• metallurgy — metallurgic, metallurgical, adj. metallurgically, adv. metallurgist /met l err jist/ or, esp. Brit., /meuh tal euhr jist/, n. /met l err jee/ or, esp. Brit., /meuh tal euhr jee/, n. 1. the technique or science of working or heating metals so as… …   Universalium

• Pencil — This article is about the handwriting instrument. For other uses, see Pencil (disambiguation). HB graphite pencils A pencil is a …   Wikipedia

• industrial glass — Introduction       solid material that is normally lustrous and transparent in appearance and that shows great durability under exposure to the natural elements. These three properties lustre, transparency, and durability make glass a favoured… …   Universalium

• Carbon — (), but as most compounds with multiple single bonded oxygens on a single carbon it is unstable.] Cyanide (CN–), has a similar structure, but behaves much like a halide ion (pseudohalogen). For example it can form the nitride cyanogen molecule… …   Wikipedia