ÉlectroplacageElectroplating, also known as electrochemical deposition or electrodeposition, is a process for producing a metal coating on a solid substrate through the reduction of cations of that metal by means of a direct electric current. The part to be coated acts as the cathode (negative electrode) of an electrolytic cell; the electrolyte is a solution of a salt of the metal to be coated; and the anode (positive electrode) is usually either a block of that metal, or of some inert conductive material.
Cubic zirconiaCubic zirconia (abbreviated CZ) is the cubic crystalline form of zirconium dioxide (ZrO2). The synthesized material is hard and usually colorless, but may be made in a variety of different colors. It should not be confused with zircon, which is a zirconium silicate (ZrSiO4). It is sometimes erroneously called cubic zirconium. Because of its low cost, durability, and close visual likeness to diamond, synthetic cubic zirconia has remained the most gemologically and economically important competitor for diamonds since commercial production began in 1976.
Dioxyde de zirconiumLe dioxyde de zirconium, ou oxyde de zirconium() est un composé chimique de formule . Il est couramment appelé la zircone (ne pas confondre avec le zircon qui est un silicate de zirconium). C'est un solide cristallin blanc. On le trouve dans le milieu naturel sous la forme d'un minéral ayant une structure cristalline monoclinique appelé . Il est possible de stabiliser la forme cubique en ajoutant des impuretés. Ce matériau est utilisé par exemple dans des capteurs (sonde lambda).
Electrical resistivity and conductivityElectrical resistivity (also called volume resistivity or specific electrical resistance) is a fundamental specific property of a material that measures its electrical resistance or how strongly it resists electric current. A low resistivity indicates a material that readily allows electric current. Resistivity is commonly represented by the Greek letter ρ (rho). The SI unit of electrical resistivity is the ohm-metre (Ω⋅m).
