In metallurgy, selective leaching, also called dealloying, demetalification, parting and selective corrosion, is a corrosion type in some solid solution...
13 KB (1,671 words) - 14:27, 6 June 2024
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...
25 KB (2,533 words) - 04:28, 11 November 2024
delicate morphologies composed of electrum. The yellow rims result from selective leaching of silver from the surface of gold particle during river transport...
22 KB (2,434 words) - 22:06, 18 November 2024
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 (6,204 words) - 10:19, 11 October 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...
9 KB (1,141 words) - 01:12, 28 October 2023
self-healing property of the passive film make the steel stainless. Selective leaching often involves grain boundary depletion mechanisms. These zones also...
10 KB (1,369 words) - 14:41, 21 May 2024
copper. Brasses can be sensitive to selective leaching corrosion under certain conditions, when zinc is leached from the alloy (dezincification), leaving...
22 KB (785 words) - 07:52, 5 October 2024
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...
4 KB (435 words) - 02:34, 8 August 2024
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...
21 KB (2,724 words) - 13:27, 29 October 2024
temperature range of 500 to 1200 °C. Internal oxidation is distinct from selective leaching. "ASM Handbook Vol.13 Corrosion", ASM International, 1987, page 8...
1 KB (174 words) - 19:36, 18 July 2022
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...
59 KB (6,352 words) - 19:46, 15 November 2024
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...
22 KB (2,860 words) - 10:50, 9 October 2024
processing methods such as flotation, agitation, and vat leaching. Additionally, dump leaching is an essential part of most copper mining operations and...
19 KB (2,733 words) - 13:16, 26 September 2024
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...
9 KB (991 words) - 08:25, 25 October 2024
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...
3 KB (387 words) - 21:07, 26 August 2024
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...
114 KB (13,901 words) - 12:12, 20 October 2024
P.; Mišura, B.; Vigdergauz, V.E.; Chanturiya, V.A. (July 1993). "Selective leaching of zinc from mechanically activated complex Cu-Pb-Zn concentrate"...
80 KB (9,779 words) - 21:59, 4 August 2024
The Selective Service Act of 1917 or Selective Draft Act (Pub. L. 65–12, 40 Stat. 76, enacted May 18, 1917) authorized the United States federal government...
19 KB (1,671 words) - 12:25, 20 September 2024
damage human health, environment, and crops. Together with runoff and leaching, drift is a mechanism for agricultural pollution. Some drift results from...
22 KB (2,253 words) - 22:39, 27 September 2024
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...
67 KB (7,872 words) - 21:16, 21 November 2024
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...
46 KB (4,906 words) - 22:18, 18 May 2024
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...
23 KB (2,921 words) - 02:06, 6 November 2024
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...
23 KB (2,341 words) - 15:28, 13 October 2024
and upgrades copper ions from low-grade leach solutions into a solvent containing a chemical that selectively reacts with and binds the copper in the...
2 KB (194 words) - 07:51, 21 October 2024
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%...
8 KB (1,151 words) - 21:58, 14 September 2024
physical and chemical methods include magnetic separation, froth flotation, leaching etc., whereby the impurities and unwanted materials are removed from the...
24 KB (2,998 words) - 11:06, 13 July 2024
chlorinated carbon compounds, Saran posed a possible danger to health by leaching, especially on exposure to food in microwave ovens. Accordingly, Saran...
6 KB (420 words) - 14:32, 28 October 2024
into aqueous sulfuric acid, usually in a heap leaching or dump leaching. The resulting pregnant leach solution is purified by solvent extraction (SX)...
65 KB (7,548 words) - 17:21, 27 October 2024
The blood–brain barrier (BBB) is a highly selective semipermeable border of endothelial cells that regulates the transfer of solutes and chemicals between...
32 KB (3,677 words) - 19:43, 10 October 2024
(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...
7 KB (535 words) - 15:13, 9 July 2024