Spark discharge plates

Spark discharge plating The transfer of material from a cathodic electrode to the anodic substrate in a periodic low voltage, high current arc in air or an inert gas. 

PLATE 4. Spark discharge between spherical electrodes. 

Static Electricity and Sensitivity to Initiation by Electrostatic Discharge. See under Electrostatic Discharges and Sensitivity of Explosives to Initiation by Them in Vol 5, E38-L to E55-L Addnl Refs 1) M.S. Kirshenbaum, Response of Lead Azide to Spark Discharges Via a New Parallel-Plate Electrostatic Sensitivity Apparatus . PATR 4559 (1973) 2) Ibid, Functional... 

Plate 1. Spark discharge apparatus used in these experiments. (Seepage 17 of color inserts.)... 

This work was supported the University of California Institute for Mexico and the United States (UC MEXUS) program and the NASA Specialized Center of Research and Training in Exobiology. The authors would like to thank Andrew Aubrey for photographing the spark discharge apparatus and Lee Gardner Dewey for assistance with the Plates. 

Plate 15.1. Spark discharge apparatus used in these experiments. 

This is a transient discrete electric discharge which takes place between two conductors which are at different potentials, bridging the gap in the form of a single ionization channel (Plate 4). Based on light emission measurements of sparks with symmetrical electrode geometry, the energy is dissipated approximately uniformly along the channel. This is in contrast with asym-... 

The favorable influence of moisture is apparently due to two effects (311). Moisture reduces the sparking tendency between a point and a plate, or in any similar electrode system, and also decreases the resistivity of the precipitated catalyst. The lower resistivity eliminates back discharge, a condition that results in abnormal power consumption and loss of efficiency. 

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