Q1)
OFHC copper refers to oxygen-free, high conductivity copper alloys, which typically are types of pure copper alloys. OFHC are metallic materials of the group nonferrous alloys, which is known for it is high conductivity of electrical and thermal ability. OFHC produced by the direct conversion of selected refined cathodes and castings under carefully controlled conditions to prevent contamination of the pure oxygen-free metal during processing. The method of producing OFHC copper ensures extra high grade of metal with a copper content of 99.98%. With so small a content of extraneous elements, the inherent properties of elemental copper are brought forth to a high degree. The most common OFHC copper alloys are C10100 (OFE) where it has 99.99% of copper and less 0.2%of oxygen and CAD10200 were it has 99.95% and around 1.5 ppm of oxygen. The companion that could be found in OFHC alloys are; Copper with 99.98% of weight, Oxygen with less than or equal to 1.5 ppm, Antimony with less than or equal to 0.1 ppm, Arsenic with less than or equal to 0.1 ppm, Nickel with less than or equal to 10 ppm, Manganese with less or equal to 0.5 ppm, Tin with less or more than 2 ppm, Zinc with less than or equal to 1 ppm, Tellurium with less than or equal to 2 ppm, Sulfur with less than or equal to 15 ppm, Silver with less than or equal to 25 ppm, Selenium with less than or equal to 3 ppm ,Phosphorus with less than or equal to 3 ppm, Bisumasu with less than or equal to 0.1 ppm, Cadmium with less than or equal to 0.1ppm,lead with less than or equal to 1ppm and Iron with less than or equal to 1 ppm . OFHC used mostly in building constructions and as electronic products.
Q2)
OFHC has grate properties that are desirable like good malleability, ductile, ...
... middle of paper ...
...ratures
Copper
and Copper Alloy Test
Temperature,
K Elastic Properties
No. Name and
Treatment Young’s
Modulus,
106 psi
(5%) Shear
Modulus,
106 psi
(2%)
102 Oxygen Free
(Cold drawn
60%) 295
195
76
20
4 17.3
20.0
22.0
Works Cited
http://www.copper.org/applications/electrical/building/ http://engineering.unt.edu/materials/ http://www.ejbmetals.com/pdf/datasheets-metal_strip/Ca101-102.pdf http://www.uom.ac.mu/faculties/foe/mped/Students_Corner/notes/EnggMaterials/copper.pdf http://info.ornl.gov/sites/publications/files/Pub35345.pdf http://www.sequoia-brass-copper.com/store/alloy-c10100-ofe-copper.html http://en.wikipedia.org/wiki/Oxygen-free_copper http://phys.org/news/2012-01-metal-alloys-energy-environment-benefit.html pic
http://www.orthop.washington.edu/?q=patient-care/articles/what-is-hip-replacement-a-review-of-total-hip-arthroplasty.html
Cogne grade 329HT (steel grade: 1.4462) is a type of duplex stainless steel. It contain higher content in molybdenum than other steel. The advantages of 1.4462 is high yield and tensile stress. It is able to endure corrosion and stress corrosion cracking. The cost is also higher than other as grade1.4436 and 1.4301.
The compound was predicted to be Copper I Sulfide because the error analysis of the final mass was only 1.17% and the error analysis of Copper II Sulfide was 15.6%. Also the empirical ratio is 2:1 which fits Copper I Sulfide (Cu2S), but not Copper II Sulfide which has an empirical ratio of 1:1. The % composition and mass : mass conversion was calculated for both Copper I Sulfide and Copper II Sulfide in order to make sure the results and conclusions were as accurate as possible.
The metal’s hardness along with its great tensile strength and ability to withstand extremely high temperatures make it ideal for use in the filaments in incandescent light bulbs, cathode-ray tubes, X-ray tubes, vacuum tube filaments, and rocke...
"Production of Refractory Metal Powders," in Powder Metal Technologies and Applications, vol. 7, 1998, pp. 188-201.
The purpose of this lab is to determine the empirical formula of copper oxide (CuxOy) through a single-displacement reaction that extracts the copper (Cu) from the original compound. In order to do this, hydrochloric acid (HCl) was mixed in with solid CuxOy; the mixture was stirred until the CuxOy was totally dissolved in the solvent. Zinc (Zn) was then added to the solution as a way to enact a single displacement reaction in which Cu begin to form on the Zn; the Cu gets knocked off the Zn through gentle stirring. To isolate the Cu, the supernatant liquid was decanted and the Cu was then washed with first water then second, isopropyl alcohol. Once done, the hydrated Cu is transferred onto an evaporating dish where it was heated multiple times
In other words, the alloying element affects the temperature of which the oxide scale forms and its behaviour is at higher elevation temperature as well as gas composition and moisture level [3].
Native Silver, or more commonly know as just “silver,” is a mineral that is created from the element silver (also called Argentum; abbreviated on the periodic table as Ag). It is seldom found as a native element mineral. Instead, it has tendencies to mix together with other minerals such as quartz, gold, and copper.1 11 Silver is actually not really reactive. It is even considered one of the “noblest” of the transition metals, noblest meaning “least chemically reactive.”5 In fact, it is used in many dishes as a fancy garnish that is able (and sometimes meant) to be eaten. Native silver also has one of the highest conductivity rates, both electrical and thermal, of metals. Because of this property, it is used in many electronic circuits as a thin coating.5 Due to its shiny, lustrous quality, native silver is also used for jewelry, decorations, and ornaments.
as high as possible during the 20 minutes it will be timed for. And so
Release of Gas was seen in (B1, B2, B3, B4, A6) as bubbling occurred due to the reaction of Copper chloride with: Aluminum shot, Aluminum foil, Zinc, Ammonium hydroxide, and Silver nitrate.
It is used with copper to form brass, and it is hard and brittle in it's natural state, less dense than iron and used to make many alloys.
This is led by a hydrocarbon fuel injection causing a reduction in oxygen to extremely low levels. 99.5 % copper concentration is thus obtained before it is cast into anodes (Figure 11).
The measure of the ability of an electrolyte solution to conduct electricity is called its conductivity. Conductivity is also referred to as specific conductance. The SI unit of conductivity is siemens per meter (S/m).
Metals possess many unique fundamental properties that make them an ideal material for use in a diverse range of applications. Many common place things know today are made from metals; bridges, utensils, vehicles of all modes of transport, contain some form of metal or metallic compound. Properties such as high tensile strength, high fracture toughness, malleability and availability are just some of the many advantages associated with metals. Metals, accompanied by their many compounds and alloys, similar properties, high and low corrosion levels, and affects, whether negative or positive, are a grand force to be reckoned with.
The relationship between reactivity and selectivity is defined by the reactivity and selectivity principle (Ketcha, 138). This principle states that “the less reactive the reagent, the more selective it is, and vicer versa” (Ketcha, 138). There are three kinds of selectivity: regioselectivity, stereoselective, and chemoselectivity. A regioselectivity reaction is a reaction that yields only one product, even though there were a possibility that two or more structural isomers could have been produce (Ketcha, 138). Stereoselective is like regioselectivity, but instead of structural isomer, it is stereoisomers (Ketcha, 138). On the other hand, chemoselectivity is when the reagent will produce one functional group instead of another
...oves mach-inability and perfect grain size. Their main purpose is to make further processing operations easier or possible. Bainite, pearlite and ferrite formed through annealing.