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AssigneeCvrd Inco Limited
InventorsKenneth Stark Coley, Armen Markarian, Shadi Saberi, Randal Mark Shaubel, Rinaldo A. Stefan, Lloyd Matt Timberg, Eric Bain Wasmund
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A process for the production of extra fine spherical metal powders by chemical vapor deposition and dissolution techniques, including metal carbonyls, wherein the metal containing process gas is propelled upwardly through a heated reactor. By employing an upward gas flow as opposed to the conventional downward gas flow, a closer approximation of theoretical plug-flow velocity profiles are achieved thusly resulting in a desirably narrower size particle distribution obviating or reducing the need for subsequent classification techniques
A non-magnetic thermal chemical vapor deposition process for producing metal powders having a narrow particle size distribution, the process comprising:
An improved thermal method for producing extra fine metal powders by chemical vapor deposition wherein the improvement comprises propelling a metal containing processing gas upwardly through a heated reactor in the absence of an electromagnetic field in an at least an approximate plug flow velocity profile in which all flux of the processing gas are traveling in the reactor at substantially the same velocity thusly reducing dissimilar particle residence times within the reactor to produce particles having a narrow particle size distribution.
Dependencies are inferred from the claim text.