noble metals
metals that do not chemically interact with other materials | ||||
Search Dictionary:
Noble metal definition was found in categories: Language, Idioms & Slang(1) Society & Culture(2) Business & Finance(1) Science & Technology(1) Encyclopedia(1)
Noble metal Definition from Language, Idioms & Slang Dictionaries & Glossaries
| WordNet 2.0 |
noble metal
Noun
1. any metal that is resistant to corrosion or oxidation
(hypernym) metallic element, metal
(hyponym) gold, Au, atomic number 79
Noun
1. any metal that is resistant to corrosion or oxidation
(hypernym) metallic element, metal
(hyponym) gold, Au, atomic number 79
Noble metal Definition from Society & Culture Dictionaries & Glossaries
| EPA Terms of Environment |
Noble Metal
Chemically inactive metal such as gold; does not corrode easily.
Chemically inactive metal such as gold; does not corrode easily.
| Environmental Engineering (English ver.) |
Noble Metal
Chemically inactive metal such as gold; does not corrode easily.
Chemically inactive metal such as gold; does not corrode easily.
Noble metal Definition from Business & Finance Dictionaries & Glossaries
| Glossary of petroleum Industry |
NOBLE METAL (CATALYST)
A metal used in petroleum refining processes that is chemically inactive with respect to oxygen.
A metal used in petroleum refining processes that is chemically inactive with respect to oxygen.
Noble metal Definition from Science & Technology Dictionaries & Glossaries
| Electrochemistry Dictionary |
noble metal
"A metal that resists oxidation (corrosion) in air, and therefore retains its metallic luster. Examples are platinum and gold. These metals have high positive standard electrode potentials and are the lowest ones on the electromotive series. Contrast with active metal. "
"A metal that resists oxidation (corrosion) in air, and therefore retains its metallic luster. Examples are platinum and gold. These metals have high positive standard electrode potentials and are the lowest ones on the electromotive series. Contrast with active metal. "
Noble metal Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Noble metal
Noble metals are metals that are resistant to corrosion or oxidation, unlike most base metals. They tend to be precious metals, often due to perceived rarity. Examples include gold, silver, tantalum, platinum, palladium and rhodium.
Some of the noble metals can be dissolved in aqua regia, a highly concentrated mixture of acids.
The term can also be used in a relative sense. A "Galvanic series" is a hierarchy of metals (or other electrically conductive materials, including composites and semimetals) that runs from noble to active, and allows designers to see at a glance how materials will interact in the environment used to generate the series. In this sense of the word, graphite is more noble than silver (even though it is alchemically more base) and the relative nobility of many materials is highly dependent upon context, as for aluminium and stainless steel in conditions of varying pH.
| See more at Wikipedia.org... |