NDLI: Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

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Aluminum Powder Preparation for Additive Manufacturing Using Electrostatic Classification

Content Provider	MDPI
Author	Shinkaryov, Alexander Cherkasova, Margarita Pelevin, Ivan Ozherelkov, Dmitriy Chernyshikhin, Stanislav Kharitonova, Natalia Gromov, Alexander Nalivaiko, Anton
Copyright Year	2021
Description	This work aims to study the possibility of using an electrostatic drum-type separator to prepare a powder with a narrow size distribution curve for usage in additive manufacturing. The size distributions of the uncoated commercial aluminum powders ASP-30, ASP-22, and ASP-5 were analyzed. It was shown that the powders ASP-30 and ASP-22 have similar asymmetric distributions with a SPAN of 1.480 and 1.756, respectively. ASP-5 powder, in turn, has a narrow distribution with a SPAN of 0.869. ASP-30 powder was chosen for further experiment because, traditionally, separators are used to classify large-sized materials with particle size more than 100 μm. The optimal mode of electrostatic classification was proposed for the selected powder. Various classification methods, including centrifugal and electrostatic, were compared. The powders before and after classification were studied by XRD, SEM, TEM, and TG–DSC analyses. The obtained results showed that electrostatic classification does not lead to the formation of coatings on the processed powders. Electrostatic separation effectively narrows the particle size distribution, making it a suitable and valuable method to classify initial powders for additive manufacturing.
Starting Page	629
e-ISSN	20796412
DOI	10.3390/coatings11060629
Journal	Coatings
Issue Number	6
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-05-24
Access Restriction	Open
Subject Keyword	Coatings Coatings and Films Aluminum Powder Electrostatic Classification Alumina Coating Oxide Layer Additive Manufacturing Selective Laser Melting Laser Powder Bed Fusion
Content Type	Text
Resource Type	Article

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