In metallurgy, selective leaching, also called dealloying, demetalification, parting and selective corrosion, is a corrosion type in some solid solution...
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delicate morphologies composed of electrum. The yellow rims result from selective leaching of silver from the surface of gold particle during river transport...
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NiAl. The removal of Al from some phases but not others is known as "selective leaching". The NiAl phase has been shown to provide the structural and thermal...
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Corrosion engineering (section Selective leaching)
principally in metal alloys. The less noble metal of the alloy, is selectively leached from the alloy. Removal of zinc from brass is a more common example...
58 KB (6,197 words) - 14:34, 20 August 2024
Hydrometallurgy (section Leaching)
divided into three general areas: Leaching Solution concentration and purification Metal or metal compound recovery Leaching involves the use of aqueous solutions...
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the voids at high pressure and initiates cracks in the steel. This selective leaching of carbon is a more serious loss of strength and ductility. HTHA can...
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copper. Brasses can be sensitive to selective leaching corrosion under certain conditions, when zinc is leached from the alloy (dezincification), leaving...
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underground leaching of uranium ores. In-situ leaching of copper was done by the Chinese by 907 AD, and perhaps as early as 177 BC. Copper is usually leached using...
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processing methods such as flotation, agitation, and vat leaching. Additionally, dump leaching is an essential part of most copper mining operations and...
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self-healing property of the passive film make the steel stainless. Selective leaching often involves grain boundary depletion mechanisms. These zones also...
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sulfides and hydrogen sulfide smell. On cast iron, a graphitic corrosion selective leaching may be the result, with iron being consumed by the bacteria, leaving...
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500 °C. At high temperatures may boil and create voids. Prone to selective leaching in some environments, which may cause joint failure. Traces of bismuth...
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temperature range of 500 to 1200 °C. Internal oxidation is distinct from selective leaching. "ASM Handbook Vol.13 Corrosion", ASM International, 1987, page 8...
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Catalyst support (section Catalyst leaching)
catalysis is leaching, a form of deactivation where active species on the surface of a solid catalyst are lost in the liquid phase. Leaching is detrimental...
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fourth incarnation of the draft came into being in 1940, through the Selective Training and Service Act; this was the country's first peacetime draft...
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Electroless nickel immersion gold (redirect from Chemical Ni/Au selective)
over the coating due to sulfur-containing compounds from the solder mask leaching into the plating bath. The quality and other aspects of ENIG coatings for...
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P.; Mišura, B.; Vigdergauz, V.E.; Chanturiya, V.A. (July 1993). "Selective leaching of zinc from mechanically activated complex Cu-Pb-Zn concentrate"...
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Herbicide (redirect from Selective herbicide)
known as weeds. Selective herbicides control specific weed species while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes...
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The Selective Service Act of 1917 or Selective Draft Act (Pub. L.Tooltip Public Law (United States) 65–12, 40 Stat. 76, enacted May 18, 1917) authorized...
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leaching has been proven to be effective on ores with high soluble copper values or ores which experience preg-robbing. Leaching through bulk leach extractable...
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damage human health, environment, and crops. Together with runoff and leaching, drift is a mechanism for agricultural pollution. Some drift results from...
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to ten times its dry volume. It occurs in soils which have had little leaching, hence it is found in arid regions, although it may also occur in humid...
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Rhacodactylus leachianus (redirect from Leach's Giant Gecko)
Rhacodactylus leachianus, commonly known as the New Caledonian giant gecko, Leach's giant gecko, leachianus gecko, or Leachie, is the largest living species...
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into aqueous sulfuric acid, usually in a heap leaching or dump leaching. The resulting pregnant leach solution is purified by solvent extraction (SX)...
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laterites (or oxide type) are highly enriched in iron due to very strong leaching of magnesium and silica. They consist largely of goethite and contain 1–2%...
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physical and chemical methods include magnetic separation, froth flotation, leaching etc., whereby the impurities and unwanted materials are removed from the...
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chlorinated carbon compounds, Saran posed a possible danger to health by leaching, especially on exposure to food in microwave ovens. Since 2004, therefore...
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Uranium mining (section Heap leaching)
leaching (57% of world production) or by conventional underground or open-pit mining of ores (43% of production). During in-situ mining, a leaching solution...
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(1918), also known as the Selective Draft Law Cases, was a United States Supreme Court decision which upheld the Selective Service Act of 1917, and more...
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sum of contributions from both mechanisms (leaching + dissolution): NRi=NRxi+NRh. Diffusion-controlled leaching (ion exchange) is characteristic of the initial...
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