Results 41 to 50 of about 14,550 (311)

Gold geochemistry and mineralogy of till fines: a new approach for data integration [PDF]

open access: yesBulletin of the Geological Society of Finland, 2000
A new method of heavy mineral (HM) separation and assessment of gold grade was compared with the results of conventional AAS analysis. Sixteen gold micronuggets and a number of particles of native metal and metal alloys (brass, tin, bismuth, lead) were ...
V. Knauf   +3 more
doaj   +1 more source

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

open access: yesAdvanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar   +6 more
wiley   +1 more source

Electropolishing of gold and gold alloys in HCl-glycerol-ethanol electrolytes

open access: yesApplied Surface Science Advances
Electropolishing or electrochemical polishing (EP) is an ultrafinishing process that improves esthetic, technical and functional properties of metallic surfaces by reducing their roughness.
Julymar Rodriguez   +2 more
doaj   +1 more source

Extraction and separation studies of gold(III) with 4-(4-methoxybenzylideneimino)-5-methyl-4H-1,2,4-triazole-3-thiol in hydrochloric acid medium

open access: yesJournal of Saudi Chemical Society, 2015
A novel method is proposed for the extraction of microgram level concentration of gold(III) from hydrochloric acid medium with 4-(4-methoxybenzylideneimino)-5-methyl-4H-1,2,4-triazole-3-thiol (MBIMTT) dissolved in chloroform as an extractant.
Kaluram N. Vidhate   +3 more
doaj   +1 more source

Investigation of the dealloying front in partially corroded alloys

open access: yesMaterials Research Letters, 2022
Nanoporous gold as obtained by corrosion of alloys of gold and a less noble metal is a system with manifold applications. The process of dealloying, however, can result in partially porous samples, when dealloying conditions are not optimized with ...
Christoph Mahr   +4 more
doaj   +1 more source

Influence of urea and glucose on corrosion resistance of Gold 21K alloy in the presence of artificial sweat [PDF]

open access: diamond, 2022
Thangarajan Umamathi   +3 more
openalex   +1 more source

An Inkjet‐Printed Platinum‐Based Temperature Sensing Element on Polyimide Substrates

open access: yesAdvanced Engineering Materials, EarlyView.
An inkjet‐printed, meander‐structured, nanoparticle platinum‐based resistive temperature sensors on polyimide substrates are demonstrated as proof‐of‐concept. Optimized sintering at 250°C enables stable conductive structures. The Pt100‐ and Pt1000‐type sensors exhibit linear resistance–temperature characteristics with stable TCR in the 20°C–80°C range,
Shawon Alam   +6 more
wiley   +1 more source

Face Centred Cubic Multi-Component Equiatomic Solid Solutions in the Au-Cu-Ni-Pd-Pt System

open access: yesMetals, 2017
A single-phase solid solution is observed in quaternary and quinary alloys obtained from gold, copper, nickel, palladium and platinum. The lattice parameters of the alloys follow the linear rule of mixture when considering the lattice parameters of the ...
Jens Freudenberger   +7 more
doaj   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

open access: yesAdvanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel   +6 more
wiley   +1 more source

Application of Gold in Biomedicine: Past, Present and Future

open access: yesInternational Journal of Gerontology, 2012
Gold has been used in medicine for thousands of years. Nowadays, gold compounds contribute to the treatment of rheumatoid arthritis; gold alloys are used in implants in various fields of medicine; and colloid gold is used in immunogold electron ...
Hsueh-Hsiao Wang   +8 more
doaj   +1 more source

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