Results 1 to 10 of about 625,210 (358)
Powder Reuse Cycles in Electron Beam Powder Bed Fusion—Variation of Powder Characteristics [PDF]
Materials, 2021 A path to lowering the economic barrier associated with the high cost of metal additively manufactured components is to reduce the waste via powder reuse (powder cycled back into the process) and recycling (powder chemically, physically, or thermally processed to recover the original properties) strategies.
Gitanjali Shanbhag, Mihaela Vlasea
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Advanced Engineering Materials, EarlyView., 2023 A novel method for tracking structural changes in gels using widely accessible microcomputed tomography is presented and validated for various hydro‐, alco‐, and aerogels. The core idea of the method is to track positions of micrometer‐sized tracer particles entrapped in the gel and relate them to the density of the gel network.
Anja Hajnal +3 more
wiley +1 more source
Hemostatic Comparison of a Polysaccharide Powder and a Gelatin Powder [PDF]
Journal of Investigative Surgery, 2018 Purpose/Aim: Powdered hemostats have been widely adopted for their ease-of-use; however, their efficacy has been limited resulting in applications restricted to low-level bleeds. This study investigates the use of bovine-derived gelatin particles (BGP) as a standalone hemostatic powder and compare BGP to commercially available microporous ...
Paul Sanders +6 more
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Langmuir, 2013 We investigate the wicking in granular media by considering layers of grains at the surface of a liquid and discuss the critical contact angle below which spontaneous impregnation takes place. This angle is found to be on the order of 55° for monodisperse layers, significantly smaller than 90°, the threshold value for penetrating assemblies of tubes ...
Raux, P. S. +4 more
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Natural Stone Waste Powders Applied to SCC Mix Design [PDF]
, 2008 In order to comply with current trends concerning sustainability, saving of primary materials and energy\ud savings, this paper addresses Eco-concrete. The major focus thereby is on the increased efficiency of cement\ud use.
Brouwers, H.J.H., Hunger, M.
core +8 more sources
Nature Materials, 2014 Over the course of its long history, powder diffraction has provided countless insights into the properties of materials. It will continue to do so in the future, but with an emphasis on elucidating how materials respond to external stimuli.
Anthony K. Cheetham, Andrew L. Goodwin
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Cookoff of Black Powder and Smokeless Powder
Propellants, Explosives, Pyrotechnics, 2021 AbstractWe have completed a series of both vented and sealed cookoff experiments of black powder and smokeless powder in our Sandia Instrumented Thermal Ignition (SITI) apparatus at bulk densities of 1078 and 729 kg/m3, respectively. The confining aluminum cylinder was ramped from room temperature to a set point temperature and then held at the ...
Michael L. Hobbs, Michael J. Kaneshige
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Chemical Vapor Deposition of silicon nanodots on TiO2 submicronic powders in vibrated fluidized bed [PDF]
, 2010 Silicon nanodots have been deposited on TiO2 submicronic powders in a vibrated Fluidized Bed Chemical Vapor Deposition (FBCVD) reactor from silane SiH4. Deposition conditions involving very low deposition rates have been studied. After treatment, powders
Cadoret, Loic +3 more
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The Measurement of the Thermal Properties and Absorptances of Powders Near their Melting Temperatures [PDF]
, 1991 A new technique, using a laser as the heating source, has been adopted to measure the heat capacities, thermal diffusivities, thermal conductivities, and absorptances of powders (especially polymer powders) near their melting temperatures.
Barlow, Joel W., Sih, Samuel S.
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