Measurement of electrical charges carried by dust particles [contact contamination]

Author

Gao, Jin Chun ; Zhang, Ji Gao

Author_Institution

Res. Lab. of Electr. Contacts, Beijing Univ. of Posts & Telecommun., China

fYear

2002

fDate

2002

Firstpage

191

Lastpage

196

Abstract

Dust contamination on electric contacts appears to be very serious in China. The adhesion of dust on contact surfaces is due to the static electric charges carried by the particles. Measurement of the charges is of importance for laboratory simulation. The Millikan testing method was used for the measurement, with 183 sets of data collected and used for fitting the curves. The final result shows that electric charges increase with the effective radius of the particle. Particles with a radius in the range between 0.5 and 2.5 μm may carry electric charges between 1.3×10^-18 C and 1.1×10^-16 C.

Keywords

adhesion; charge measurement; dust; electrical contacts; electron device testing; environmental degradation; static electrification; surface contamination; 0.5 to 2.5 micron; Millikan testing method; contact surfaces; curve fitting; dust adhesion; dust contamination; dust particles; effective particle radius; electric contacts; electrical charge measurement; laboratory simulation; static electric charges; Adhesives; Contacts; Current measurement; Electric variables measurement; Laboratories; Particle measurements; Pollution measurement; Surface contamination; Surface fitting; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Contacts, 2002. Proceedings of the Forty-Eighth IEEE Holm Conference on

Print_ISBN

0-7803-7433-9

Type

conf

DOI

10.1109/HOLM.2002.1040841

Filename

1040841