Title :
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
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;
Conference_Titel :
Electrical Contacts, 2002. Proceedings of the Forty-Eighth IEEE Holm Conference on
Print_ISBN :
0-7803-7433-9
DOI :
10.1109/HOLM.2002.1040841
