Results 71 to 80 of about 65,880 (307)
"Asiatic" copper in New Kingdom Egypt [PDF]
, 2015 This work presents a combination of Lead Isotope Analysis ( LIA ) and ancient Egyptian texts and depictions in order to describe the history of the ox -hide copper ingots presence in Egypt , which w ere called by the Egyptians “Asiatic copper”.
Giménez Izquierdo, Francisco Javier
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Physical metallurgy of modern creep-resistant steel for steam power plants: microstructure and phase transformations [PDF]
, 2016 The fact that the microstructure of steel depends on its composition and the heat treatment given to it has been heavily exploited in the design of steel for power plant applications.
Igwemezie, Victor C. +2 more
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Transactions of The Electrochemical Society, 1944 After describing briefly the three methods of making copper powder: (1) by electrolysis, (2) by reduction of the oxide, and (3) by atomization, results are reported on the effect of particle size and shape of copper powders. The maintenance of close specifications in copper powders has required years of patient research and development.
openaire +1 more source
Thermophysical Properties of the Desulphurization Slags With Various CaS and CaO/Al2O3 Ratio
Advanced Engineering Materials, EarlyView.This article investigates how CaS content and the CaO/Al2O3 ratio influence the thermophysical properties of desulphurization slags. Using experimental measurements and thermodynamic simulations, this study reveals complex effects on viscosity, surface tension, and density, providing new insight into slag structure and phase behavior under ...
Eldar Salpagarov +4 more
wiley +1 more source
CORROSION OF BASIC REFRACTORIES IN COPPER METALLURGY
Acta Metallurgica Slovaca, 2015 Knowledge of corrosion processes on the melt – solid boundary is very important for life time of refractories and for refractory using design. The aim of this study was to realize and evaluate laboratory corrosion tests of three types basic refractories ...
Pavol Vadasz, David Medved
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Advanced Engineering Materials, EarlyView.Carbon‐free inert anodes are essential for decarbonizing aluminum electrolysis. This study investigates a recyclate‐based MgO‐316L steel composite anode tested under galvanostatic Hall–Héroult conditions in cryolite at 1000°C. Microstructural analysis reveals selective MgO fluorination, spinel and oxide layer formation, electrolyte infiltration, and ...
Serhii Yaroshevskyi +7 more
wiley +1 more source
Transmission electron microscopy characterization of microstructural features of Al-Li-Cu alloys [PDF]
A transmission electron microscopy (TEM) examination of aluminum-lithium-copper alloys was conducted. The principal purpose is to characterize the nature, size, and distribution of stringer particles which result from the powder metallurgy (P/M ...
Avalos-Borja, M. +2 more
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Advanced Engineering Materials, EarlyView.This study investigates laser‐based oxide removal of Cu inserts in oxygen‐free conditions and examines long‐term oxidation kinetics and surface chemistry under different atmospheres via X‐ray photoelectron spectroscopy. Al–Cu compound casting with differently oxidized surfaces is performed, and intermetallic phase formation, morphology, and thermal ...
Timon Steinhoff +9 more
wiley +1 more source
Materials Research Express, 2020 In this paper, the Cu-2Ag sheet is prepared by the new process of upward method, and the alloy sheet was prepared by continuous cold rolling and thermomechanical treatment of solution aging.
Li Ming-Mao +3 more
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Bullion production in imperial China and its significance for sulphide ore smelting world-wide [PDF]
, 2015 Gold and silver production was of major importance for almost all ancient societies but has been rarely studied archaeologically. Here we present a reconstruction of a previously undocumented technology used to recover gold, silver and lead at the site ...
Chen, J +6 more
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