Effect of melt delivery nozzle parameters on Fe–Cr alloy powders prepared by vacuum close-coupled gas atomization [PDF]
Fenmo yejin jishuFe–Cr alloy powders were prepared by vacuum close-coupled gas atomization technology. The effects of the diameter and protrusion length of the melt delivery nozzle on the size distribution, yield, and median particle size (D50) of the Fe–Cr alloy powders
SU Caijin +5 more
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Log-Normal Melt Pulsation in Close-Coupled Gas Atomization [PDF]
Metallurgical and Materials Transactions B, 2013 High speed photography coupled with sophisticated image analysis has been used to study low-frequency pulsation during close-coupled gas atomization. At high gas pressure the instantaneous melt delivery is described by two superimposed log-normal distributions, one with a high standard deviation but little melt at the atomizer tip, the second with low ...
Mullis, AM +3 more
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Estimation of Cooling Rates During Close-Coupled Gas Atomization Using Secondary Dendrite Arm Spacing Measurement [PDF]
Metallurgical and Materials Transactions B, 2013 Al-4 wt pct Cu alloy has been gas atomized using a commercial close-coupled gas-atomization system. The resulting metal powders have been sieved into six size fractions, and the SDAS has been determined using electron microscopy. Cooling rates for the powders have been estimated using a range of published conversion factors for Al-Cu alloy, with ...
Mullis, AM +3 more
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Gas Atomization of Aluminium Melts: Comparison of Analytical Models
Metals, 2012 A number of analytical models predicting the size distribution of particles during atomization of Al-based alloys by N2, He and Ar gases were compared.
Georgios Antipas
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Multiphase modelling of the characteristics of close coupled gas atomization [PDF]
, 2011 Not withstanding the high demand of metal powder for automotive and High Tech applications, there are still many unclear aspects of the production process. Only recentlyhas supercomputer performance made possible numerical investigation of such phenomena. This thesis focuses on the modelling aspects of primary and secondary atomization.
Zeoli, Nicola
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Journal of Materials Research and TechnologyClose-coupled gas atomization (CCGA) uses pressurized gas jets to atomize molten metals, producing powders suitable for additive manufacturing (AM). Optimization of processing parameters is crucial to achieve powders with good fluidity and high apparent ...
Vitor E. Pinotti +2 more
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Supersonic Close-coupled Atomization: Experimental Insights [PDF]
, 2023 Along with the growing economic importance of metal additive manufacturing by processes such as laser-based powder bed fusion, the demand for high-quality metal powders as the corresponding raw material is also increasing.
Apell, Niklas
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Influence of nozzle gas inlets on properties of GTD222 superalloy powders for additive manufacturing
Fenmo yejin jishu, 2021 The GTD222 superalloy powders for the additive manufacturing were prepared by the vacuum inert gas atomization (VIGA) with the close-coupled nozzle system in this paper.
WU Kai-qi +8 more
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Generation of Hydrogen through the Hydrolysis of Gas Atomized High Purity Mg Powder
Medžiagotyra, 2022 Generating hydrogen through hydrolysis of metal magnesium with water is a very promising strategy for portable applications because it is clean, has high energy density and operability.
Zhi LU +9 more
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Research Advances in Close-Coupled Atomizer Flow and Atomizing Mechanisms
, 2023 As component manufacturing technology evolves, more demands are placed on improved performance of metal/alloy powders in medical, military, machining, and 3D printing applications.
章敏, Zhang, Zhaoming, 刘秋生
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