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To avoid the irritation of damaged jewelry from such scratches and flaws, gold colored titanium jewelry is a safer substitute. Piercing jewelry is often made of a gold alloy , the most common being 18k, with 24k being entirely pure and much softer. 18k gold usually contains 75% gold and the remaining 25% copper , silver and traces of other metals.
Niobium was officially adopted as the name of the element in 1949, but the name columbium remains in current use in metallurgy in the United States. It was not until the early 20th century that niobium was first used commercially. Niobium is an important addition to high-strength low-alloy steels.
Earrings are jewelry that can be worn on one's ears. Earrings are commonly worn with an earlobe piercing [1] or another external part of the ear, ...
Niobium-1% zirconium is used in rocketry and in the nuclear industry. It is regarded as a low-strength alloy. [1] [2]C-103, which is 89% Nb, 10% Hf and 1% Ti, is used for the rocket nozzle of the Apollo service module and the Merlin vacuum [3] engines; it is regarded as a medium-strength alloy.
This is a list of prices of chemical elements. Listed here are mainly average market prices for bulk trade of commodities. ... Niobium: 8.57: 20 ...
Borel, F. 1994. The Splendor of Ethnic Jewelry: from the Colette and Jean-Pierre Ghysels Collection. New York: H.N. Abrams (ISBN 0810929937). Evans, J. 1989. A History of Jewellery 1100–1870 (ISBN 0486261220). LaGamma, Alisa (1991). Metropolitan jewelry. New York: The Metropolitan Museum of Art. ISBN 978-0-87099-616-0. Nemet-Nejat, Karen Rhea ...
Niobium–tin is an intermetallic compound of niobium (Nb) and tin (Sn), used industrially as a type-II superconductor. This intermetallic compound has a simple structure: A3B . It is more expensive than niobium–titanium (NbTi), but remains superconducting up to a magnetic flux density of 30 teslas [T] (300,000 G), [ 1 ] compared to a limit ...
Pages in category "Niobium minerals" The following 41 pages are in this category, out of 41 total. This list may not reflect recent changes. A. Achalaite; Aeschynite-(Y)