Results 81 to 90 of about 165,045 (291)

Characteristics and Processing of Hydrogen-Treated Copper Powders for EB-PBF Additive Manufacturing

Applied Sciences, 2019
The fabrication of high purity copper using additive manufacturing has proven difficult because of oxidation of the powder feedstock. Here, we present work on the hydrogen heat treatment of copper powders for electron beam powder bed fusion (EB-PBF), in ...
Christopher Ledford, Christopher Rock, Paul Carriere, Pedro Frigola, Diana Gamzina, Timothy Horn   +5 more
doaj   +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., Larson, L. A., Pizzo, P. P.   +2 more
core   +1 more source

Physico-chemical Modification of the Fibrous Filter Nozzles for Purification Processes of Water and Air [PDF]

, 1996
A set of experiments to study physical and chemical modification of the surface of fibers is conducted to expand the area of their application for purification of water, gas and air (including that in conditions of space). The possibility of modification
S V Bordunov, O V Galtseva, N M Natalinova, A A Rogachev, Ruizhi Zhang, Bordunov V V, Bordunov S V, Galtseva O V, Murphy J, Uzhov V N, Mustafina R M, Bordunov V V, Bordunov S V, Galtseva O V, Gavrilin A N, Nizhegorodov A I, Vasendina E A, Luchnikov P A   +17 more
core   +1 more source

Investigation of Thermo‐Chemical Processes in Commercial MgO‐C Refractory Bricks With and Without MgO‐C Recyclate at Elevated Temperatures

Advanced Engineering Materials, EarlyView.
This study investigates thermo‐chemical processes during high‐temperature testing of two commercial MgO‐C brick grades, one containing 47.5 wt.% MgO‐C recyclate. Using ETV, DTA/TG‐MS, XRD, and SEM/EDS/EBSD, mechanisms such as carbothermal reduction of magnesia, impurity incorporation into the secondary MgO surface layer, and calcium‐rich phase ...
Alexander Schramm, Jana Hubálková, Christian Schimpf, Thomas Schemmel, Christos G. Aneziris, Anja Weidner, Horst Biermann   +6 more
wiley   +1 more source

Electrophoretic Deposition and Characterization of Copper Selenide Thin Films [PDF]

, 2007
Various methods have been developed to produce thin semiconductor films. One of the potential methods is electrophoretic deposition (EPD) due to simple experimental set up, shorter deposition time, low cost and versatility.
Abdul Razak, Mohd Fairul Sharin
core  

Soft chemistry synthesis of the perovskite CaCu3Ti4O12 [PDF]

, 2007
The perovskite CaCu3Ti4O12 (CCT) has been obtained after calcination of oxalate precursors at 900–1000 °C in air. Those precursors are prepared using a soft chemistry method, the coprecipitation.
Durand, Bernard, Guillemet-Fritsch, Sophie, Marchin, Loïc   +2 more
core   +3 more sources

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, Matheus Roberto Bellé, Anton Yehorov, Julia Richter, Olena Volkova   +4 more
wiley   +1 more source

Novel Tailoring of Ternary ZnS‐MXene‐TiO2 Nanocomposite Heterojunction and Its Tunable Electrochemical Properties With Enhanced Photocatalytic Degradation

Advanced Engineering Materials, EarlyView.
ZnS‐MXene‐TiO2 nanocomposite heterojunction for photocatalytic decomposition of this methylene blue dye (MB) greatly improves light absorption, charge separation, and active site area. Two‐dimensional MXene forms nanocomposites by easily combining them with 0D (quantum dots), 1D (tube and wire), 2D (plane and sheet), and 3D (particle and lamellar ...
Latiful Kabir, Dohyun Kim, Minho Song, Jae Doc Na, Young Jun Joo, Kwang Youn Cho, Karna Wijaya, Won‐Chun Oh   +7 more
wiley   +1 more source

Electrical Conductivity of Lignocellulose Composites Loaded with Electrodeposited Copper Powders. Part II. Influence of Particle Size on Percolation Threshold

International Journal of Electrochemical Science, 2012
This article is concerned with synthesis and characterization of electroconductive composite materials prepared by the compression molding of mixtures of lignocellulose and electrochemically deposited copper powder under different pressures, and ...
M.M. Pavlović, V. Ćosović, M.G. Pavlović, V. Bojanić, N.D. Nikolić, R. Aleksic   +5 more
doaj   +1 more source

Method for controlling density and permeability of sintered powdered metals [PDF]

, 1968
Improved, relatively low-cost method has been developed to produce porous metals with predetermined pore size, pore spacing, and density, utilizing powder-metal processes.
Todd, H. H.
core   +1 more source