Results 21 to 30 of about 5,237 (261)

Copper-Graphene Composite Materials: Manufacturing Technology and Properties [PDF]

Problemy Mechatroniki, 2019
The article presents the results of preliminary research into the feasibility of copper-graphene composite application in the production of shaped charge liners in HEAT ammunition from graphene-coated copper grain powders by powder metallurgy techniques.
Tomasz MAJEWSKI, Marcin SARZYŃSKI, Judyta SIENKIEWICZ, Jerzy SZAWŁOWSKI, Tomasz BABUL, Sylwester JOŃCZYK   +5 more
doaj   +1 more source

Skeuomorphism, Boundary Objects and Socialization of the Chalcolithic Metallurgy in the Southern Levant

Etnoantropološki Problemi, 2015
Metalworking emerged in the southern Levant as a new ritual practice during the late phase of the Ghassulian culture, ca. 4300–3900 BC. Ghassulian metalworkers cast objects in both pure and alloyed copper. All the artifacts produced during this time span
Milena Gošić
doaj   +1 more source

High Oxidation Resistance of CVD Graphene-Reinforced Copper Matrix Composites

Nanomaterials, 2019
Copper-based materials are common industrial products which have been broadly applied to the fields of powder metallurgy, electrical contact, and heat exchangers, etc.
Mingliang Wu, Baosen Hou, Shengcheng Shu, Ao Li, Qi Geng, He Li, Yumeng Shi, Minghui Yang, Shiyu Du, Jun-Qiang Wang, Shuzhi Liao, Nan Jiang, Dan Dai, Cheng-Te Lin   +13 more
doaj   +1 more source

Genesis of high-grade iron ore in the Sijiaying deposit, eastern Hebei, China: insights from magnetite/pyrite geochemistry and sulfur isotopes

Frontiers in Earth Science
The Sijiaying iron deposit in eastern Hebei Province is one of the largest banded iron formation (BIF)-hosted iron deposits in China and contains significant high-grade iron ore resources.
Xinyu Gao, Xinyu Gao, Xinyu Gao, Chao Xu, Fan Huang, Zhonghua Ruan, Zhonghua Ruan, Yan Wang, Lianrong Wu, Lianrong Wu, Hongzhe Xie, Hongzhe Xie, Wei Zhang, Wei Zhang, Chao Ma, Chao Ma, Junping Zhang, Junping Zhang, Qingsong Cai, Qingsong Cai, Ziwen Yang, Ziwen Yang, Guiyuan Sun, Guiyuan Sun   +23 more
doaj   +1 more source

Development of Russian copper industry under the conditions of the World Trade Organization membership [PDF]

Экономика региона, 2014
The article concerns the influence of the obligations undertaken by Russian Federation upon the World Trade Organization accession, on the development of the national copper industry.
Larisa Mikhaylovna Kapustina, Andrey Anatolyevich Drevalev   +1 more
doaj   +1 more source

Stasis or stimulus? Exotic materials and social display in Southeast Asia: Response to Pfaffenberger

Advances in Archaeomaterials, 2022
This paper assesses the relationship between metallurgy and social change in prehistoric Thailand. One model proposes that for about 15 centuries after circa 2000 BCE, peaceful village communities, being acquainted with copper-base metallurgy through ...
Charles Higham
doaj   +1 more source

Modelling the Movement of Concentrate Particles in a Flash Furnace

Proceedings
In copper metallurgy, a flash furnace produces copper matte or smelting copper [...]
Ewa Kolczyk
doaj   +1 more source

Between ritual and technology: Social articulation of prehistoric metallurgy from a cross-cultural perspective [PDF]

Glasnik Etnografskog Instituta SANU
The present paper explores the relevance of ethnographic data on ritual metallurgy for the understanding of the intersection of ritual and technology in prehistoric metallurgy.
Gošić Milena
doaj   +1 more source

Question of local exploitation of copper ore deposits in the Urnfield time in Poland

Frontiers in Earth Science, 2023
Despite rich deposits of copper in SW Poland, their exploitation in prehistory has not been confirmed, and in the literature it is usually argued that raw materials processed in the Bronze Age were imported.
K. Nowak, T. Stolarczyk, Z. Stos-Gale, J. Baron, K. Derkowska, P. Derkowski, B. Miazga, J. Woodhead, J. Karasiński, R. Maas   +9 more
doaj   +1 more source

Thermomechanical Fatigue and Creep–Fatigue Interaction of Inconel 718 Additively Manufactured by Laser Beam Powder Bed Fusion

Advanced Engineering Materials, EarlyView.
Thermomechanical fatigue tests of laser beam powder bed fusion (PBF‐LB) Inconel 718 show that the additively manufactured material reaches almost the lifetimes of conventionally‐rolled material under no‐dwell conditions. Introducing dwell times at the maximum temperature markedly reduces the lifetimes due to pronounced grain boundary sliding associated
Stefan Guth, Tomáš Babinský, Jan Lars Riedel, Wen Hao Kan, Aijun Huang, Martin Heilmaier, Ivo Šulák   +6 more
wiley   +1 more source