Materials Literature
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This specification covers four grades of wrought niobium and niobium alloy bar, rod, and wire as R04200-Type 1, reactor grade unalloyed niobium; R04210-Type 2, commercial grade unalloyed niobium; R04251-Type 3, reactor grade niobium alloy containing 1 % zirconium; and R04261-Type 4, commercial grade niobium alloy cont…
Significance and UseThis test method is useful in evaluating and characterizing tars and pitches and as one element in establishing the uniformity of shipments or sources of supply. It is a rapid and reasonably accurate measure of the toluene insoluble
Significance and Use The electrical and mechanical characteristics of circuits produced from flexible composites of copper foil with dielectric materials will to a large extent depend on the properties of the dielectric portion of the composite. Measure
This specification covers welded copper-nickel alloy pipes produced from Copper Alloy UNS Nos. C70600 and C71500 for general engineering applications. Pipes may be produced in any one of the following tempers: as-welded from annealed sheets, strips, or plates (WM50); as-welded from cold-worked sheets, strips, or plate…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
Significance and UseThe copy image quality is affected by many factors; including the copier, supplies, and environmental conditions. The density and background image quality is particularly significant relative to aesthetic appearance, the visual impress
Abstract Wenn langkettige bipolare Amphiphile in Wasser assoziieren und dabei Packungsfrustration auftritt, entstehen neuartige Aggregatformen wie helikale Nanofasern. Diese bilden ein physikalisches Netzwerk und ermöglichen so thermisch und pH‐schaltbare Hydrogele.
Significance and UseThis procedure is suitable for manufacturing control and for verifying that the product meets specifications. This test method provides rapid, multielement determinations with sufficient accuracy to ensure product quality and minimize
This specification covers standards for silicomanganese of Grades A, B, and C. Materials shall conform to manganese, silicon, carbon, phosphorus, and sulfur contents, as well as supplemental requirements of arsenic, tin, lead, chromium, nickel, and molybdenum. The material shall also conform to standard sizes and tole…
This specification covers nickel-iron-chromium alloys in the form of welded, cold-worked, and annealed pipe for general corrosive service and heat resisting applications. These products are furnished three alloys: UNS N08120, UNS N0880, and UNS N08810. The materials shall conform to the required chemical composition f…
This specification covers the standard requirements for lead and lead alloy strip, sheet, and plate products intended for use in chemical plants, sound attenuation, roofing, vibration dampening, flashing and weather stripping, waterproofing, and r
This specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extrudin…
With recently announced measures in the USA and the European Union (EU) to improve vehicle efficiency and reduce CO 2 emissions for passenger cars, respectively, weight reduction promises to become even more imperative for the automotive industry, according to Milliken Chemical. To help automotive manufacturers and su…
Scope1.1 This specification establishes requirements for brass rod (round, hexagonal, and octagonal), bar (rectangular and square), and shapes of UNS Alloys C21000, C22000, C23000, C24000, C26000, C26800, C27000, C27400, and C27450. 1.2 Units—The values s
“协同效应”在本文中是指两方或者多方, 发生或者促进不同于任何相应单方所能够发生或者促进的化学反应(包括反应机制和生成不同的产物). 协同效应可能(1)使得原来不能够发生的反应顺利进行或者使得原来能够发生但是速度很慢的反应加速进行, (2)提高反应的选择性(包括化学选择性、区域选择性和立体选择性), 使得原来生成混合物的反应只生成一种产物, (3)改变反应的方向, 高选择性生成另一种产物. 能够实现协同效应的体系可以多种多样, 包括如双或者多金属有机化合物, 双或者多金属配合物, 以及具有Lewis酸性的金属(有机)化合物与过渡金属的协同作用. 近十年来, 作者提出并坚持以“协同效应”为指导思想的科学研究思路, 在双金属有机合成试…
These test methods cover procedures for the sampling and chemical analysis of inorganic alkaline detergents. These detergents include caustic soda, soda ash, modified soda (sequicarbonate type), sodium bicarbonate, sodium metasilicate, trisodium phosphate, tetrasodium pyrophosphate, borax, and sodium triphosphate. Dif…
This specification covers spray-formed seamless ferritic/austenitic stainless steel pipe intended for general corrosive service, with particular emphasis on resistance to stress corrosion cracking. These steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. The steel shall be…
This specification covers carbon and alloy steel pipe, electric-fusion-welded with filler metal added, fabricated from pressure-vessel-quality plate of several analyses and strength levels and suitable for high-pressure service at high temperatures. Heat treatment may or may not be required to attain the desired mecha…
Significance and UseA major factor affecting the long term performance of insulating materials is thermal degradation. Other factors, such as moisture and vibration, may cause failures after the material has been weakened by thermal degradation. An elec
In this paper will be present and analyzed the data for mineralogical composition of the weathering crust of Groot deposit. This deposit, in general, is combination of silicate nickel and redeposited nickel iron. There are several metals in the mineral association of the Groot deposit, and nickel is present in the min…