Results 1 to 10 of about 1,601,986 (333)

Copper metallurgy at the crossroads [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2007
Copper technology changed from the vertical to the horizontal furnace and from the roast reaction to converting towards the end of the last century. However, the horizontal furnace proved to be an inefficient and polluting reactor.
Habashi F.
doaj   +3 more sources

Transformative copper metallurgy in Chalcolithic Cyprus: a reappraisal [PDF]

open access: yesAntiquity, 2021
The extraction and smelting of the rich copper ore deposits of Cyprus and the manufacture of copper objects on the island are thought to have begun during the Philia phase (c. 2400–2200 BC).
B. Düring   +3 more
semanticscholar   +4 more sources

Interwoven traditions in Bell Beaker metallurgy: Approaching the social value of copper at Bauma del Serrat del Pont (Northeast Iberia)

open access: yesPLoS ONE, 2021
Debates on early metallurgy in Western Europe have frequently focused on the social value of copper (between utilitarian and symbolic) and its purported role in the emergence and consolidation of hierarchies.
Julia Montes-Landa   +4 more
doaj   +3 more sources

The Beginning of Metallurgy in the Southern Levant: A Late 6th Millennium CalBC Copper Awl from Tel Tsaf, Israel [PDF]

open access: yesPLoS ONE, 2014
The beginning of metallurgy in the ancient Near East attracts much attention. The southern Levant, with the rich assemblage of copper artifacts from the Nahal Mishmar cave and the unique gold rings of the Nahal Qanah cave, is regarded as a main center of
Yosef Garfinkel   +2 more
exaly   +2 more sources

A powder-metallurgy-based strategy toward three-dimensional graphene-like network for reinforcing copper matrix composites

open access: yesNature Communications, 2020
Graphene networks have been used to reinforce polymer and ceramic composites, but connecting graphene into a three dimensional network in a metal matrix is challenging.
Xiang Zhang   +8 more
doaj   +2 more sources

CORROSION OF BASIC REFRACTORIES IN COPPER METALLURGY

open access: yesActa 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
doaj   +2 more sources

The nature of some Late Bronze Age iron-bearing artefacts of the Ural-Kazakhstan region [PDF]

open access: yesВестник археологии, антропологии и этнографии, 2023
The problem of the beginning of iron production in the Late Bronze Age of the Ural-Kazakhstan region is discussed. For this, 13 iron-bearing artefacts from nine settlements that functioned in the 2nd mil.
Ankushev M.N.   +7 more
doaj   +1 more source

New Evidence of the Ancient Metallographical Activities in the Margin of the Iranian Central Plateau [PDF]

open access: yesIranian Journal of Archaeological Studies, 2021
The Urmia-Dokhtar volcanic belt is the most important copper belt in Iran, where the archaeological materials discussed in this article also derive from.
Shokouh Khosravi, Kamal Aldin Niknami
doaj   +1 more source

Environmental risk assessment for the unregulated waste disposal sites of municipal waste in the city area of Bor [PDF]

open access: yesMining and Metallurgy Engineering Bor, 2021
The problem of unregulated waste disposal sites is present not only in Serbia but in the other parts of the Republic of Serbia. Therefore, it is necessary to locate these waste dumpsites, investigate their negative impact on the environment, make ...
Staletović Novica   +4 more
doaj   +1 more source

Ceramic particles reinforced copper matrix composites manufactured by advanced powder metallurgy: preparation, performance, and mechanisms

open access: yesInternational Journal of Extreme Manufacturing, 2023
Copper matrix composites doped with ceramic particles are known to effectively enhance the mechanical properties, thermal expansion behavior and high-temperature stability of copper while maintaining high thermal and electrical conductivity. This greatly
Yilei Yan   +6 more
semanticscholar   +1 more source

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