niobium carbide
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Niobium carbide — Identifiers CAS number 12069 94 2 Properties Molecular formula NbC … Wikipedia
Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta … Wikipedia
niobium processing — Introduction preparation of the ore for use in various products. Niobium (Nb) has a body centred cubic (bcc) crystal structure and a melting point of 2,468° C (4,474° F). Of the refractory metals, it has the lowest density and best… … Universalium
Carbide — For the software development tool targeting the Symbian OS, see Carbide.c++. Calcium carbide. In chemistry, a carbide is a compound composed of carbon and a less electronegative element. Carbides can be generally classified by chemical bonding… … Wikipedia
niobium — /nuy oh bee euhm/, n. Chem. a steel gray metallic element resembling tantalum in its chemical properties; becomes a superconductor below 9 K; used chiefly in alloy steels. Symbol: Nb; at. no.: 41; at. wt.: 92.906; sp. gr.: 8.4 at 20°C. [1835 45;… … Universalium
Carbide — Carbure Carbure de calcium Un carbure est un composé chimique du carbone avec un deuxième élément chimique autre que l’oxygène. Ils présentent donc une formulation générale de type CxXy. On distingue : les hydrocarbures (C … Wikipédia en Français
Zirconium carbide — Chembox new Name = Zirconium carbide ImageFile = Zirconium(IV) carbide.jpg ImageName = Zirconium carbide OtherNames = zirconium(IV) carbide Section1 = Chembox Identifiers CASNo = 12070 14 3 Section2 = Chembox Properties Formula = ZrC MolarMass =… … Wikipedia
Tantalum carbide — Chembox new Name = Tantalum carbide ImageFile = Tantalum carbide.jpg ImageName = Tantalum carbide OtherNames = tantalum (IV) carbide Section1 = Chembox Identifiers CASNo = 12070 06 3 Section2 = Chembox Properties Formula = TaC MolarMass = 192.959 … Wikipedia
Intergranular corrosion — (IGC), also termed intergranular attack (IGA), is a form of corrosion where the boundaries of crystallites of the material are more susceptible to corrosion than their insides. ( Cf. transgranular corrosion.)This situation can happen in otherwise … Wikipedia
Arc welding — uses a welding power supply to create an electric arc between an electrode and the base material to melt the metals at the welding point. They can use either direct (DC) or alternating (AC) current, and consumable or non consumable electrodes.… … Wikipedia
Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity. Computer scientist Manindra Agrawal of the… … Universalium
