نتایج جستجو برای: burden metallurgy
تعداد نتایج: 105060 فیلتر نتایج به سال:
In the four decades since the discovery that a discrete Bronze Age preceded the Iron Age in mainland Southeast Asia, much has been learned about the dating, technology, production, organization, and use of bronze metallurgy in the region, particularly in prehistoric Thailand. Although independent invention of copper smelting in Southeast Asia has not been considered likely by most regional arch...
W. Stanek, M. Szega Silesian University of Technology, Gliwice, Poland L Blacha Silesian University of Technology, Katowice, Poland Metallurgy represents a complex production system of fuel and mineral non-renewable resources transformation. The effectiveness of resource management in metallurgical chains depends on the applied ore grade and on the irreversibility of components of the system. T...
Rare earth metals are used in semiconductors, solar cells and catalysts. This review focuses on the background of oxide metallurgy technologies, the chemical and physical properties of rare earth (RE) metals, the background of oxide metallurgy, the functions of RE metals in steelmaking, and the influences of RE metals on steel microstructures. Future prospects for RE metal applications in steel...
This report describes the composition and some properties of the cast iron and wrought iron that form the dome of the U.S. Capitol. It is a compilation of two recent investigations, one by NIST and one by Lucius Pitkin, Inc. These investigations were implemented by the Office of the Architect of the Capitol to determine the dome’s condition and also to predict how the outer shell might respond ...
Cast iron (CI) is one of the oldest materials in commercial use. It has excellent compressive strength and is commonly used for structures that require this property, as well as for water and sewer lines. This article explains CI metallurgy and why the understanding of this metallurgy is key to understanding other ferrous materials and alloys. The composition of cast iron (CI) varies significan...
Milica M. Gvozdenović1,*, Branimir Z. Jugović2, Jasmina S. Stevanović3, Tomislav Lj. Trišović2 and Branimir N. Grgur1 1Department of Physical Chemistry and Electrochemistry, Faculty of Technology and Metallurgy, University of Belgrade, Belgrade, 2Institute of Technical Sciences, Serbian Academy of Science and Arts, 3Center for Electrochemistry, Institute of Technology and Metallurgy, Belgrade S...
Li Zhang 1,*, Wu Zhang 2, Juhua Zhang 3 and Guangqiang Li 3 1 School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China 2 School of Materials Science and Engineering, Shenyang Ligong University, Shenyang 110168, China; [email protected] 3 The State Key Laboratory of Refractories and Metallurgy, Wuhan University of Science and Technology, Wuhan 430081, China; zhangj...
The physical and mechanical properties of samples of a nickel-base alloy fabricated by powder metallurgy were determined. The particle sizes of the powders used to make the samples varied from -80/ +200 mesh to -325 mesh. The compaction pressure varied from 138 to 414 MN/m2 and the sintering temperature varied from 1150 to 1250 degrees C. The shrinkage during processing, the porosity, tensile s...
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