Results 111 to 120 of about 87,628 (306)
La metalurgia inca: estudio a partir de las colecciones del Museo de América de Madrid
Bulletin de l'Institut Français d'Études Andines, 2017 Metallurgy in Inca times reflects a technological heritage of over 2,000 years of metalworking in the vast region of the Central Andes. Copper and its alloys, silver, and gold were widely used metals.
Salvador Rovira
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Braze alloy holds bonding strength over wide temperature range [PDF]
, 1966 Copper-based quaternary alloys of the solid solution type is used for vacuum furnace brazing of large stainless steel components at a maximum temperature of 1975 deg F.
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Analysis of Dental Gold Alloys
Journal of Dental Research, 1926 Complete chemical analyses of about 40 dental gold alloys were made as part of the investigation of their physical properties. These analyses required the determination of silver, gold, platinum, palladium, iridium, rhodium, copper, zinc, nickel, tin, manganese, iron, and magnesium. Methods as found in the literature for the determination of the above-
openaire +2 more sources
Advanced Functional Materials, EarlyView.A food‐grade cooling composite made from starch and recycled eggshell powder offers a scalable, ultra‐low‐cost solution for passive daytime radiative cooling. Easily prepared using basic kitchen tools, this material empowers communities, even in areas with limited infrastructure, to stay cooler during worsening summer heat waves.
Qimeng Song +3 more
wiley +1 more source
Self‐Healing and Shape Memory Effects in Gold Microparticles through the Defects‐Mediated Diffusion
Advanced Science, 2017 Some metal alloys subjected to irreversible plastic deformation can repair the inflicted damage and/or recover their original shape upon heating.
Oleg Kovalenko +3 more
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, 1976 A composite material is described which will provide low friction surfaces for materials in rolling or sliding contact and is self-lubricating and oxidation resistant up to and in excess of about 930 C.
Sliney, H. E.
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MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance
Advanced Functional Materials, EarlyView.Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
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Metalurgija, 2014 Numerous gold alloys posses the ability for thermal hardening, and this property is attractive for improving jewels strength, because the most noble alloys are weak.
R. Perić +4 more
doaj
Ultrasonically bonded value assembly [PDF]
, 1975 A valve apparatus capable of maintaining a fluid-tight seal over a relatively long period of time by releasably bonding a valve member to its seat is described.
Salvinski, R. J.
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Engineering of Low-Loss Metal for Nanoplasmonic and Metamaterials Applications
, 2009 We have shown that alloying a noble metal (gold) with another metal (cadmium), which can contribute two electrons per atom to a free electron gas, can significantly improve the metals optical properties in certain wavelength ranges and make them worse in
A. V. Gavrilenko +10 more
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