Difference between revisions of "Category:Refractory metals"
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Refractory metals are a class of transition metals that have extraordinary resistence to heat and wear. The class consists of five elements: niobium, molybdenum, tantalum, tungsten, and rhenium; though some definitions also include the fourth group metals (titanium, zirconium, hafnium), vanadium, chromium and the platinum metals from the 8th and 9th group. | Refractory metals are a class of transition metals that have extraordinary resistence to heat and wear. The class consists of five elements: niobium, molybdenum, tantalum, tungsten, and rhenium; though some definitions also include the fourth group metals (titanium, zirconium, hafnium), vanadium, chromium and the platinum metals from the 8th and 9th group. | ||
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| + | A common chemical property of refractory metals is that they do not form basic oxides and hydroxides (or do so extremely reluctantly), and their low-oxidated compounds are unstable. Their most stable oxides are acidic in character. | ||
[[Category:Metals]] | [[Category:Metals]] | ||
[[Category:Transition metals]] | [[Category:Transition metals]] | ||
Latest revision as of 17:05, 2 March 2016
Refractory metals are a class of transition metals that have extraordinary resistence to heat and wear. The class consists of five elements: niobium, molybdenum, tantalum, tungsten, and rhenium; though some definitions also include the fourth group metals (titanium, zirconium, hafnium), vanadium, chromium and the platinum metals from the 8th and 9th group.
A common chemical property of refractory metals is that they do not form basic oxides and hydroxides (or do so extremely reluctantly), and their low-oxidated compounds are unstable. Their most stable oxides are acidic in character.
Pages in category "Refractory metals"
The following 5 pages are in this category, out of 5 total.
