noble metal


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metal

 [met´'l]
any chemical element marked by luster, malleability, ductility, and conductivity of electricity and heat, and which will ionize positively in solution. adj., adj metal´lic.
alkali metal one of a group of monovalent elements including lithium, sodium, potassium, rubidium, and cesium.
metal fume fever an occupational disorder with malaria-like symptoms occurring in those engaged in welding and other metallic operations and due to the volatilized metals. It includes brassfounder's fever (brass chill, brazier's chill) and spelter's fever (zinc chill, zinc fume fever).
heavy metal one with a high specific gravity, usually defined to be above 5.0.
heavy metal poisoning poisoning with any of the heavy metals, particularly antimony, arsenic, cadmium, lead, mercury, thallium, or zinc.
noble metal a metal that is highly resistant to oxidation and corrosion.

no·ble met·al

a metal that cannot be oxidized by heat alone, nor readily dissolved by acid, for example, gold, platinum.
Synonym(s): noble element

noble metal

A metal that resists corrosion or oxidation. Examples are gold, platinum, and silver.
See also: metal

no·ble met·al

(nōbĕl metăl)
Any metallic element used in dental restorations and appliances that resists tarnish, corrosion, and oxidation during heating or in intraoral environments (e.g., gold, platinum).
References in periodicals archive ?
Noble metals were still required for catalyst regeneration in the rich conditions.
The effect of metal loading is also discussed for noble metal catalysts considering the high cost of noble metal.
In general, temperatures above 1000[degrees]C may be measured with high accuracy by using noble metal thermocouples.
Van Duyne, Nanoscale optical biosensor: short range distance dependence of the localized surface plasmon resonance of noble metal nanoparticles, J .
There is a growing movement among semiconductor manufacturers to replace gold wire, which is currently the most widely used bonding wire for connecting lead frames and IC chips, with copper wire, which enables the cost of noble metal bullion to be reduced by approximately 90 percent.
When the polymer phase results saturated by noble metal atoms, clusters are generated.
The interaction strength between the noble gas atom and the noble metal increases in the orders of Ar < Kr < Xe and Ag < Cu < Au, leading one to suspect that the molecule XeAuF should show the strongest of these bonds.
HydrogenSource, LLC recently announced it has demonstrated the viability of new advanced noble metal Water Gas Shift (WGS) catalysts as "cost-effective components in fuel processor systems for fuel cell and hydrogen generation applications.
ERFURT, Germany -- X-FAB Silicon Foundries today announced two major MEMS milestones: completion of its dedicated noble metal facility for MEMS and post-CMOS processing - and shipment of its billionth MEMS device.
Tenders are invited for Supply of noble metal recovery
To build the catalyst, a nanoparticle core is formed from either a platinum group metal, gold, or a base metal alloyed with a noble metal.