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handbook of carbon, graphite, diamond and fullerenes

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116 Carbon, Graphite, Diamond, <strong>and</strong> Fullerenes<br />

Figure 5.15. Graphite barrel holder for semiconductor wafer processing. (Photograph<br />

courtesy Sign Great Lakes Corp., Niagara Falls, NY.)<br />

4.4 Electrical Applications<br />

Electrical applications <strong>of</strong> molded <strong>graphite</strong> are well established <strong>and</strong> the<br />

material has been a st<strong>and</strong>ard for many years due to its chemical inertness,<br />

good electrical conductivity <strong>and</strong> ability to withst<strong>and</strong> the heat <strong>of</strong> electrical<br />

arcing with minimum damage. The following is a list <strong>of</strong> current applications:<br />

• Brushes for electric motors<br />

• Current-collecting shoes for railroad conductor rails<br />

• Heating elements for high-temperature furnaces<br />

• Electrodes for lighting, electrical-discharge machining<br />

(EDM), <strong>and</strong> electric-arc furnaces<br />

• Fuel-cell components<br />

• Anodes, cathodes, <strong>and</strong> buss bars <strong>of</strong> zinc-chloride, zincbromide,<br />

<strong>and</strong> other advanced batteries

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