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Journal articles on the topic 'Powder Beds'

Author: Grafiati

Published: 4 June 2021

Last updated: 16 February 2022

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1

Jones, Thomas B., and Kit-Ming Tang. "Charge relaxation in powder beds." Journal of Electrostatics 19, no. 2 (1987): 123–36. http://dx.doi.org/10.1016/0304-3886(87)90001-5.

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2

Wright, C. Steven, M. Youseffi, S. P. Akhtar, T. H. C. Childs, C. Hauser, and P. Fox. "Selective Laser Melting of Prealloyed High Alloy Steel Powder Beds." Materials Science Forum 514-516 (May 2006): 516–23. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.516.

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This paper presents the results of a recent comprehensive investigation of selective laser melting (slm) of prealloyed gas and water atomised M2 and H13 tool steel powders. The objective of the study was to establish the parameters that control the densification of single and multiple layers with the aim of producing high density parts without the need for infiltration. Powders were processed using continuous wave (CW) CO2 and Nd:YAG lasers. Relationships between alloy composition, powder particle size and shape, flowability, microstructure (phases present, their size, morphology and distribut

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3

Zhang, Huili, Jan Degrève, Jan Baeyens, and Shu-Yii Wu. "Powder attrition in gas fluidized beds." Powder Technology 287 (January 2016): 1–11. http://dx.doi.org/10.1016/j.powtec.2015.08.052.

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4

Hapgood, Karen P., James D. Litster, Simon R. Biggs, and Tony Howes. "Drop Penetration into Porous Powder Beds." Journal of Colloid and Interface Science 253, no. 2 (2002): 353–66. http://dx.doi.org/10.1006/jcis.2002.8527.

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5

HICKEY, A. J., and N. M. CONCESSIO. "CHAOS IN ROTATING LACTOSE POWDER BEDS." Particulate Science and Technology 14, no. 1 (1996): 15–25. http://dx.doi.org/10.1080/02726359608906683.

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6

Fielden, K. E., J. M. Newton, and R. C. Rowe. "Movement of liquids through powder beds." International Journal of Pharmaceutics 79, no. 1-3 (1992): 47–60. http://dx.doi.org/10.1016/0378-5173(92)90092-g.

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7

Wilmański, Alan, Magdalena Zarzecka-Napierała, and Zbigniew Pędzich. "Combustion Synthesis of Aluminum Oxynitride in Loose Powder Beds." Materials 14, no. 15 (2021): 4182. http://dx.doi.org/10.3390/ma14154182.

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This paper describes combusting loose powder beds of mixtures of aluminum metal powders and aluminum oxide powders with various grain sizes under various nitrogen pressure. The synthesis conditions required at least 20/80 weight ratio of aluminum metal powder to alumina powder in the mix to reach approximately 80 wt% of γ-AlON in the products. Finely ground fused white alumina with a mean grain size of 5 μm was sufficient to achieve results similar to very fine alumina with 0.3 μm grains. A lower nitrogen pressure of 1 MPa provided good results, allowing a less robust apparatus to be used. The

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8

Rombouts, M., L. Froyen, A. V. Gusarov, E. H. Bentefour, and C. Glorieux. "Light extinction in metallic powder beds: Correlation with powder structure." Journal of Applied Physics 98, no. 1 (2005): 013533. http://dx.doi.org/10.1063/1.1948509.

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9

Fitzpatrick, John J., Shaozong Wu, Kevin Cronin, and Song Miao. "Self-Agglomeration in Fluidised Beds after Spray Drying." ChemEngineering 4, no. 2 (2020): 35. http://dx.doi.org/10.3390/chemengineering4020035.

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Many powders are produced in spray-drying processes from liquid concentrates. Self-agglomeration can be performed in a fluidised bed where the spray-dried powder is agglomerated using the liquid concentrate as the binder material. This has advantages over traditional wet agglomeration in fluid beds using liquid binders (such as water or sugar solutions). These include thermal energy savings and no additional non-aqueous binder components added. The work presented has two parts. The first part is experimental, which investigated the self-agglomeration of whey protein isolate (WPI) powder as a c

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10

Nguyen, Thanh, Wei Shen, and Karen Hapgood. "Drop penetration time in heterogeneous powder beds." Chemical Engineering Science 64, no. 24 (2009): 5210–21. http://dx.doi.org/10.1016/j.ces.2009.08.038.

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11

Vinnakota, Raj K., and Dentcho A. Genov. "Surface plasmon induced enhancement in selective laser melting processes." Rapid Prototyping Journal 25, no. 6 (2019): 1135–43. http://dx.doi.org/10.1108/rpj-06-2018-0146.

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Purpose Selective laser melting (SLM) is an advanced rapid prototyping or additive manufacturing technology that uses high power density laser to fabricate metal/alloy components with minimal geometric constraints. The SLM process is multi-physics in nature and its study requires development of complex simulation tools. The purpose of this paper is to study – for the first time, to the best of the authors’ knowledge – the electromagnetic wave interactions and thermal processes in SLM based dense powder beds under the full-wave formalism and identify prospective metal powder bed particle distri

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12

Okudaira, Yuzo, Yoshitaka Kurihara, Hideyuki Ando, Munetake Satoh, and Kei Miyanami. "Sound Absorption Characteristics of Powder Beds Comprised of Binary Powder Mixtures." Journal of the Japan Society of Powder and Powder Metallurgy 42, no. 2 (1995): 239–44. http://dx.doi.org/10.2497/jjspm.42.239.

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13

Dressler, M., M. Röllig, M. Schmidt, A. Maturilli, and J. Helbert. "Temperature distribution in powder beds during 3D printing." Rapid Prototyping Journal 16, no. 5 (2010): 328–36. http://dx.doi.org/10.1108/13552541011065722.

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14

Raison, C. E., B. Thomas, and A. M. Squires. "Mass transfer in shallow aerated vibrated powder beds." Powder Technology 169, no. 3 (2006): 136–42. http://dx.doi.org/10.1016/j.powtec.2006.02.010.

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15

Yanagida, T., A. J. Matchett, and J. M. Coulthard. "Dissipation Energy of Powder Beds Subject to Vibration." Chemical Engineering Research and Design 79, no. 6 (2001): 655–62. http://dx.doi.org/10.1205/026387601316971325.

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16

Zafar, Umair, Colin Hare, Ali Hassanpour, and Mojtaba Ghadiri. "Ball indentation on powder beds for assessing powder flowability: Analysis of operation window." Powder Technology 310 (April 2017): 300–306. http://dx.doi.org/10.1016/j.powtec.2017.01.047.

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17

Xiong, Wei, Rachel K. Wells, and Daniel E. Giammar. "Carbon Sequestration in Olivine and Basalt Powder Packed Beds." Environmental Science & Technology 51, no. 4 (2017): 2105–12. http://dx.doi.org/10.1021/acs.est.6b05011.

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18

Gusarov, A. V. "Radiation transfer in metallic-powder beds during laser forming." Quantum Electronics 40, no. 5 (2010): 451–59. http://dx.doi.org/10.1070/qe2010v040n05abeh013976.

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19

Hamada, Ken-ichi, Yuichi Yoshida, Atsuko Shimosaka, Yoshiyuki Shirakawa, and Jusuke Hidaka. "Generation Mechanism of Convection in Vertically Vibrating Powder Beds." JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 46, no. 1 (2013): 40–49. http://dx.doi.org/10.1252/jcej.12we145.

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20

Börjesson, Erik, Jonathan Karlsson, Fredrik Innings, Christian Trägårdh, Björn Bergenståhl, and Marie Paulsson. "Entrapment of air during imbibition of agglomerated powder beds." Journal of Food Engineering 201 (May 2017): 26–35. http://dx.doi.org/10.1016/j.jfoodeng.2017.01.004.

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21

Asif, Mohammad, and Syed Sadiq Ali. "Bed collapse dynamics of fluidized beds of nano-powder." Advanced Powder Technology 24, no. 6 (2013): 939–46. http://dx.doi.org/10.1016/j.apt.2013.01.005.

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22

Gusarov, A. V. "Radiative transfer, absorption, and reflection by metal powder beds in laser powder-bed processing." Journal of Quantitative Spectroscopy and Radiative Transfer 257 (December 2020): 107366. http://dx.doi.org/10.1016/j.jqsrt.2020.107366.

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23

Lee, Sea-Hoon, Georg Rixecker, Fritz Aldinger, Sung-Churl Choi, and Keun-Ho Auh. "Effects of powder bed conditions on the liquid-phase sintering of Si3N4." Journal of Materials Research 17, no. 2 (2002): 465–72. http://dx.doi.org/10.1557/jmr.2002.0065.

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The effects of the active and passive protection mechanisms of powder beds on the sintering of Si3N4 were investigated. Shrinkage, density, and coloring behavior of sintered samples were analyzed using different compositions and packing conditions of powder beds based on BN and Si3N4 with different additives. Y2O3 additive in the powder bed influences the weight change and phase formation behavior of the samples, although it has a very low vapor pressure at the sintering temperature. When MgO/Y2O3 was used as sintering additives, the packing density and thickness of the powder bed had a much s

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24

Lapčík, Lubomír, Martin Vašina, Barbora Lapčíková, et al. "Materials characterization of advanced fillers for composites engineering applications." Nanotechnology Reviews 8, no. 1 (2019): 503–12. http://dx.doi.org/10.1515/ntrev-2019-0045.

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Abstract Four different minerals were investigated; hollow spheres of calcium carbonate, platy mica, needle like wollastonite and glassy perlite and characterized via iGC for surface energy, Freeman powder rheology for flow characterization, cyclic uniaxial die compaction for modulus of elasticity and frequency dependent sound absorption properties. Particle surface energy and particle shape strongly affected the packing density of powder beds. In the case of higher porosity and thus lower bulk density, the powders acoustic absorption was higher in comparison with higher packing density materi

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25

Yadav, N. K., B. D. Kulkarni, and L. K. Doraiswamy. "Experimental Evaluation and Modeling of Agglomerating Fine Powder Fluidized Beds." Industrial & Engineering Chemistry Research 33, no. 10 (1994): 2412–20. http://dx.doi.org/10.1021/ie00034a024.

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26

Gusarov, A. V., and I. Smurov. "Radiation transfer in metallic powder beds used in laser processing." Journal of Quantitative Spectroscopy and Radiative Transfer 111, no. 17-18 (2010): 2517–27. http://dx.doi.org/10.1016/j.jqsrt.2010.07.009.

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27

Torres, F. G., M. Carrillo, and M. L. Cubillas. "Melt Densification of Polymeric Powder Beds Filled with Natural Fibres." Polymers and Polymer Composites 14, no. 7 (2006): 691–700. http://dx.doi.org/10.1177/096739110601400703.

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28

Yanagida, T., A. J. Matchett, J. M. Coulthard, B. N. Asmar, P. A. Langston, and J. K. Walters. "Dynamic measurement for the stiffness of loosely packed powder beds." AIChE Journal 48, no. 11 (2002): 2510–17. http://dx.doi.org/10.1002/aic.690481110.

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29

Cruz, M. A. A., M. L. Passos, and W. R. Ferreira. "Final Drying of Whole Milk Powder in Vibrated-Fluidized Beds." Drying Technology 23, no. 9-11 (2005): 2021–37. http://dx.doi.org/10.1080/07373930500210473.

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30

Kamiya, Hidehiro, Genji Jimbo, Makio Naito, and Jun-Ichiro Tsubaki. "Creep Failure Process for Fine Powder Beds by Tensile Loading." KAGAKU KOGAKU RONBUNSHU 20, no. 4 (1994): 556–63. http://dx.doi.org/10.1252/kakoronbunshu.20.556.

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31

McMinn, W. A. M., C. M. McLoughlin, and T. R. A. Magee. "Temperature Variations in Powder Beds during Combined Microwave-Convective Drying." Drying Technology 22, no. 8 (2004): 1897–919. http://dx.doi.org/10.1081/drt-200032860.

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32

Ventzas, D. E. "Modeling and MIMO controller design of dense powder fluidized beds." ISA Transactions 35, no. 2 (1996): 105–19. http://dx.doi.org/10.1016/0019-0578(96)00013-4.

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33

Tan, Melvin X. L., Ling S. Wong, Kwan H. Lum, and Karen P. Hapgood. "Foam and drop penetration kinetics into loosely packed powder beds." Chemical Engineering Science 64, no. 12 (2009): 2826–36. http://dx.doi.org/10.1016/j.ces.2009.03.008.

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34

Ali, Syed Sadiq, Mohammad Asif, and Abdelhamid Ajbar. "Bed collapse behavior of pulsed fluidized beds of nano-powder." Advanced Powder Technology 25, no. 1 (2014): 331–37. http://dx.doi.org/10.1016/j.apt.2013.05.013.

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35

Childs, T. H. C., C. Hauser, and M. Badrossamay. "Selective laser sintering (melting) of stainless and tool steel powders: Experiments and modelling." Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture 219, no. 4 (2005): 339–57. http://dx.doi.org/10.1243/095440505x8109.

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When a laser beam scans once across the surface of a metallic powder bed, the resulting track may be continuous with a crescent or an elliptic cross-section, irregularly broken, balled or only partially melted. This paper reports what laser powers and scan speeds lead to what types of track, for a CO2 laser beam focused to 0.55 mm and 1.1 mm diameters, scanning over beds made from M2 and H13 tool steel and 314S-HC stainless steel powders. Beds have been made with particle size ranges from 300 μm to 150 μm, from 150 μm to 75 μm, from 75 μm to 38 μm, and less than 38 μm. Measurements are also re

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36

Hristov, Jordan. "Scaling of permeabilities and friction factors of homogeneously expanding gas-solids fluidized beds: Geldart’s A powders and magnetically stabilized beds." Thermal Science 10, no. 1 (2006): 19–44. http://dx.doi.org/10.2298/tsci0601019h.

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The concept of a variable friction factor of fluid-driven de form able powder beds undergoing fluidization is discussed. The special problem discussed addresses the friction factor and bed permeability relationships of Geldart?s A powders and magnetically stabilized beds in axial fields. Governing equations and scaling relation ships are developed through three approaches (1) Minimization of the pressure drop with respect to the fluid velocity employing the Darcy-Forchheimer equation together with the Richardson-Zaki scaling law, (2) Minimization of the pres sure drop across an equivalent-chan

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37

Lee, Jaeryeong, Ikkyu Lee, Dongjin Kim, Jonggwan Ahn, and Hunsaeng Chung. "Effect of starting powder morphology on AlN prepared by combustion reaction." Journal of Materials Research 20, no. 3 (2005): 659–65. http://dx.doi.org/10.1557/jmr.2005.0089.

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The particle size and shape effects of starting raw powders on the synthesis of aluminum nitride by combustion reaction technique were investigated with four sizes of AlN powder as diluent and two shapes of Al powder as reactant. It was found that the structure of beds of starting particles significantly affected the pore channels for nitrogen gas accessibility into a mixture compact and the passages for combustion wave propagation through particles, resulting in changes of AlN product morphology and purity. Through control of the starting particle size and shape, high-purity (over 98%) AlN pr

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38

Shibata, Koichiro, Masakata Shimizu, Shin-ichi Inaba, Reijiro Takahashi, and Jun-ichiro Yagi. "Pressure loss and hold-up powders for gas-powder two phase flow in packed beds." ISIJ International 31, no. 5 (1991): 434–39. http://dx.doi.org/10.2355/isijinternational.31.434.

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39

Börjesson, Erik, Fredrik Innings, Christian Trägårdh, Björn Bergenståhl, and Marie Paulsson. "Permeability of powder beds formed from spray dried dairy powders in relation to morphology data." Powder Technology 298 (September 2016): 9–20. http://dx.doi.org/10.1016/j.powtec.2016.05.006.

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40

NAITO, Makio. "Study on the changing process of mechanical characteristics of powder beds." Journal of the Society of Powder Technology, Japan 25, no. 4 (1988): 239–41. http://dx.doi.org/10.4164/sptj.25.239.

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41

Aoki, Nanami, Yohei Okada, and Hidehiro Kamiya. "Direct Measurement of the Shear Strength of Fly Ash Powder Beds." ACS Sustainable Chemistry & Engineering 8, no. 51 (2020): 18864–68. http://dx.doi.org/10.1021/acssuschemeng.0c05280.

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42

Akiyamam, Tetsuo, and Motomi Kono. "Impact stress induced displacement of powder beds in an inclined vessel." Advanced Powder Technology 8, no. 2 (1997): 113–28. http://dx.doi.org/10.1016/s0921-8831(08)60470-7.

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43

Moreau, Christian. "Particle size measurement in glass powder beds using optical coherence tomography." Optical Engineering 47, no. 3 (2008): 033601. http://dx.doi.org/10.1117/1.2896455.

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44

Demetry, Chrysanthe, Flavia S. Souto, Bjorn C. Ryden, and Jennifer M. Roy. "Tactile sensing of density uniformity in powder beds after die filling." Powder Technology 99, no. 2 (1998): 119–24. http://dx.doi.org/10.1016/s0032-5910(98)00094-1.

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45

Madhusudana Rao, M., T. Ramakrishnan, and Y. Venkateswara Rao. "The slope stability of powder material beds percolated by a fluid." Advanced Powder Technology 4, no. 1 (1993): 1–8. http://dx.doi.org/10.1163/156855293x00015.

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46

Yanagida, T., A. J. Matchett, J. M. Coulthard, B. N. Asmar, P. A. Langston, and J. K. Walters. "Effect of density homogeneity on the dynamic response of powder beds." AIChE Journal 49, no. 8 (2003): 2009–21. http://dx.doi.org/10.1002/aic.690490811.

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47

SIH, SAMUEL SUMIN, and JOEL W. BARLOW. "The Prediction of the Emissivity and Thermal Conductivity of Powder Beds." Particulate Science and Technology 22, no. 4 (2004): 427–40. http://dx.doi.org/10.1080/02726350490501682.

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48

SUMIN SIH, SAMUEL, and JOEL W. BARLOW. "The Prediction of the Emissivity and Thermal Conductivity of Powder Beds." Particulate Science and Technology 22, no. 3 (2004): 291–304. http://dx.doi.org/10.1080/02726350490501682a.

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49

Kamiya, Hidehiro, Makio Naito, Junichiro Tsubaki, and Genji Jimbo. "Creep Failure Process for Fine Powder Beds by Tensile Loading [Translated]†." KONA Powder and Particle Journal 13 (1995): 223–31. http://dx.doi.org/10.14356/kona.1995027.

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50

Mazur, V. T., D. C. Chagas, M. M. Mazur, S. A. Pianaro, and G. de Vasconcelos. "Single-step laser sintering of YSZ powder-beds to TBC applications." Cerâmica 67, no. 383 (2021): 365–69. http://dx.doi.org/10.1590/0366-69132021673833120.

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