Testing Method of Spontaneous Polarity Used in Powders Industry

Li Fang Zhao; Yan Ding; Jin Sheng Liang; Jun Ping Meng; Hui Wen Li

doi:10.4028/www.scientific.net/AMR.427.224

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 427Testing Method of Spontaneous Polarity Used in...

Testing Method of Spontaneous Polarity Used in Powders Industry

Abstract:

By fitting calculation of functional relationship between charge quantity and temperature on condition that powders were shielded, a device was proposed to measure spontaneous polarity of powders, and samples of typical tourmaline were measured. The results showed when tourmaline powders of different origins were heated to 80, minimum value of spontaneous polarization strength was 3.204×10^-4C/m², and maximum value was 1.53×10^-3C/m². The conclusion was in accord with results got from crystal structure analysis, and repeatability r was 1.726×10^-6C/m² with 95% confidence probability.

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Periodical:

Advanced Materials Research (Volume 427)

Pages:

224-229

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.427.224

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Online since:

January 2012

Authors:

Li Fang Zhao, Yan Ding, Jin Sheng Liang, Jun Ping Meng, Hui Wen Li

Keywords:

Powders Industry, Shielding, Spontaneous Polarity, Test Method

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