Results 41 to 50 of about 63,255 (253)
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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Advanced Engineering Materials, EarlyView.Additive manufacturing (AM) allows great geometric freedom for lightweight components. As parts are progressively optimized exploiting potentials in AM leading in smaller material cross sections, high pressure solution treating and aging (STA) treatments show an enormous potential for strongly improving material properties.
Mika León Altmann +4 more
wiley +1 more source
Enhanced Desilication of High Alumina Fly Ash by Combining Physical and Chemical Activation
Metals, 2019 In this work, a physical–chemical activation desilication process was proposed to extract silica from high alumina fly ash (HAFA). The effects of fly ash size, hydrochloric acid concentration, acid activation time, and reaction temperature on the ...
Yanbing Gong +4 more
doaj +1 more source
Advanced Engineering Materials, EarlyView.High‐temperature interactions between low‐sulfur Al‐killed Mn–B steel and MgO–C refractories (0 and 50 wt% recyclates) are studied via finger immersion tests (1600 °C). Surface‐active elements influence infiltration. MgO/CaS layer forms, along with spinel and calcium silicate.
Matheus Roberto Bellé +5 more
wiley +1 more source
Studia Historiae Scientiarum, 2019 Przedstawiono kilka uzupełniających uwag do tekstu Mariusza W. Majewskiego o Instytucie Metalurgii i Metaloznawstwa Politechniki Warszawskiej oraz o roli prof.
Paweł E. Tomaszewski
doaj
Special Libraries, December 1961 [PDF]
, 1960 Volume 52, Issue 10https://scholarworks.sjsu.edu/sla_sl_1961/1009/thumbnail ...
Special Libraries Association
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Development Trends and Economic Assessment of the Integration Processes on the Metals Market [PDF]
, 2015 In the present paper, reasons for the increased interest in industrial policy in both developed and developing countries are explained. The systematisation of the results of the development of Russian industry from 1989 to 2014 showed a lack of ...
Makarov, E. V., Romanova, O. A.
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Advanced Engineering Materials, EarlyView.The thermal diffusivity of MgO‐C refractories is highly sensitive to sample preparation and processing procedures. In this article, the effects of coking sequence, machining conditions, structural inhomogeneity, and graphite coating application on measurements using laser flash apparatus are systematically investigated.
Luyao Pan +4 more
wiley +1 more source
Investigation Of Intermetallic Compounds In Sn-Cu-Ni Lead-Free Solders
Archives of Metallurgy and Materials, 2015 Interfacial intermetallic compounds (IMC) play an important role in Sn-Cu lead-free soldering. The size and morphology of the intermetallic compounds formed between the lead-free solder and the Cu substrate have a significant effect on the mechanical ...
Nagy E. +3 more
doaj +1 more source
Ancient tin production: Slags from the Iron Age Carvalhelhos hillfort (NW Iberian Peninsula) [PDF]
, 2018 Provenance and production of tin in the Ancient World has since long been a major topic of discussion among archaeologists. In Western Europe, where significant tin ore (cassiterite) deposits are known, only a few remains of ancient tin production, such ...
Figueiredo, Elin +5 more
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