Displacement of powders from surface by shock and plasma generated by electrostatic discharge

Document Type

Article

Publication Date

7-1-2019

Abstract

Fine particulates were removed from a flat surface and cavities by shock/plasma produced by electro-static discharge (ESD). The ESD in air formed by discharging a capacitor between two 1-mm separated pin electrodes. Both irregularly shaped glass and spherical magnesium served as contaminant particulates. The ESD energy and pressure produced by the shock were characterized. Both powders were effectively displaced by the ESD-generated shock and plasma. Displaced particles were de-agglomerated. While glass melted, flammable magnesium powder did not ignite. ESD-generated plasma and shock offer an attractive, inexpensive, and safe alternative to laser shock cleaning methods for removal particulate contaminants from surfaces.

Identifier

85066944199 (Scopus)

Publication Title

Journal of Electrostatics

External Full Text Location

https://doi.org/10.1016/j.elstat.2019.05.005

ISSN

03043886

Volume

100

Grant

HDTRA1-17-1-0044

Fund Ref

Defense Threat Reduction Agency

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