Materials Literature
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A new asymmetry photochromic diarylethene based on a phenanthrene, which is named 1-{2-methyl-[5-(4-methylene-hydroxyl) phenyl]-3-thienyl}-2-[2-methyl-5-(10-phenanthrenyl)-3-thi-enyl] perfluorocyclopentene 1o, was designed and constructed successfully. And its properties have been discussed systematically, including p…
The use of renewable raw materials constitutes a significant contribution to a sustainable development in the plastics production. This strategy is based on the advantages given by nature synthesis potential and green chemistry principles. In this sense, polymers obtained from renewable raw materials have raised some…
In this contribution, for the first time, the effect of crosslink degree on the thermal conductivity of silicone-based thermal conductive materials has been experimentally investigated. Hyper-branched silicone bases with different branching degrees and cross-linkable functional group densities are designed and synthes…
This specification deals with alloy structural steel plates. Plate specimens addressed under this specification are available in four treatment conditions (as rolled or hot rolled; annealed; normalized; and normalized and tempered), three structural forms (rectangular; circular and semi-circular; and sketch, including…
Abstract Mecasteel 75 (minimum yield strength 75 ksi) is a high-strength prehardened steel that can be used in substitution for conventional steels, such as AISI 4130, in the manufacture of massive steel components such as machines, hydraulic systems, and pumps. This datasheet provides information on composition, phys…
This practice covers the procedure for designating standard grades of flat-rolled electrical steels made to specified maximum values of core loss. This practice applies to magnetically soft irons and steel such as low-carbon steels and alloys of iron with silicon, aluminum,and so forth where a core loss measurement at…
Significance and Use 4.1 This guide is intended to assist the user in selecting strapping material(s) and application method(s) for evaluation when subjected to handling, transit, and storage tests. It describes general load, unit and package types, strap
This specification covers steel sheet in coils and cut lengths coated with zinc-aluminum-magnesium alloy by hot-dip process intended for applications requiring corrosion resistance and paintability. The steel sheet shall be produced in the following designations: commercial steel (CS types A,B,C), forming steel (FS ty…
Carbon aerogels are a unique class of high-surface-area materials derived by sol-gel chemistry. Their properties, such as high massspecific surface area, electrical conductivity, environmental compatibility, and chemical inertness, make them very promising materials for many energy-related applications, specifically i…
Graphite/epoxy composite conducting adhensive was prepared by mixed flake graphite and epoxy resin. Electric heating devices were fabricated and packaging by silk-screen printing of the graphite/epoxy conductive adhensive and electrodes as heating film as well as epoxy films as protection layers. The electric heating…
Significance and Use 3.1 Use of this guide is intended to provide information on the galvanic corrosion of metals in electrical contact in an electrolyte that does not have a flow velocity sufficient to cause erosion-corrosion or cavitation. 3.2 This sta
In the US, WATT Fuel Cell Corporation, a developer and manufacturer of solid oxide fuel cell components and systems based on Long Island, New York has purchased Pennsylvania-based tubular SOFC developer Pittsburgh Electric Engines Inc (PEEI). The acquisition agreement makes PEEI a wholly owned subsidiary of WATT, and…
The Cover shows all-organic conductive multifilament which has been fabricated through wet-spinning as described by Mutsumi Kimura and co-workers on page 550. The resulted blended fibers worked as electromechanical actuators and flexible electrodes to detect human heartbeats.
With the prohibition use of lead-solder, the reflow temperature was brought up to about 250 °C. The higher soldering temperature requires the substrate resins with better thermostability and higher glass transition temperature. The cyanate ester/epoxy composite resins are widely used in high frequency substrates for t…
physica status solidi is devoted to the thorough peer review and the rapid publication of new and important results in all fields of solid state physics and materials science, from basic science to applications and devices.physica status solidi (RRL) -Rapid Research Letters is presently the fastest peer-reviewed publi…
Neuropsychological Society, an organization of over 4,500 international members from a variety of disciplines.The Journal of the International Neuropsychological Society welcomes original, creative, high quality research papers covering all areas of neuropsychology.The focus of articles may be primarily experimental,…
The vibrational mechanical properties of a graphene resonator were investigated by finite element analysis (FEA) modeling and simulation. By applying a pressure difference across the membrane, the natural frequency of the graphene sheets is changed. The resonance frequency increases with increasing pressure difference…
As the demand for high input/output (I/O) density, package miniaturization, high frequency operation and better thermal, mechanical and electric performance increases, flip chip packaging technology is rapidly growing as a solution to successfully achieve these goals. With handheld electronic devices, hot consumer pro…
The shearing strength and the void ratio of serial solder joints are discussed in this paper. Pb-containing solders, Sn-90Pb, Sn-95Pb, Sn-37Pb and Sn-3.0Ag-0.5Cu Pb-free are soldered with MoCu substrate using vacuum soldering. Results show that, Sn-90Pb, Sn-95Pb solder joints have many voids in the joint interface, an…
Since the 50Sn32Pb18Cd eutectic solder was melted at 145 °C which is lower than the melting point of 63Sn37Pb solder (183 °C), it was selected as the interconnection joint to create a temperature gradient to avoid the former nearby 63Sn37Pb joint re-melted during the components assembly process. The tensile testing an…