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This paper reports on the results of a numerical modeling that considers the field grading phenomena of SiC powder with a variable resistivity dependent on particle size. The particle shape and size of commercially available SiC powders were altered by ball milling. In an earlier work, we have determined the electrical properties of various SiC powders by using a controlled-pressure Ohmmeter. Different...
In this paper, a new theory allowed calculating the pyroelectric coefficient “p” using the diffusion of a thermal wave within materials having a pyroelectric effect. The demonstration is performed on materials composed by various percentages of a cycloaliphatic epoxy (CE) resin and of a flexibilizing comonomer (1,6-hexanediol diglycidyl ether — HDGE). By using an electric field measurement technique...
In this paper, the variation of the resistivity of SiC powder at low and high voltage as a function of milling time was investigated by controlling the particle size, morphology and compactness (applied pressure). The particle shape and size of commercially available SiC powders were altered by ball milling. The electrical properties of the various SiC powders were characterized at low voltage by...
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