What about boron doped diamond? The electrical properties can be fine tuned by adjusting the amount of boron doping used. Could a doped diamond CVD thin/thick film be applied to a graphite or niobium core for DPF electrodes? Boron doping results in a p-semiconductor while doping with something like phosphorous or nitrogen produces a n-semiconductor. Would those properties be useful in the FF-1 electrode configuration?
http://122.249.91.209/myukk/free_journal/Download.php?fn=NDFCT487_full.pdf&ei=7wLETp-6POeciAKK0ZWADA&usg=AFQjCNFnFzBfh7YXkvdkT0YxMWtpdLUzjA&cad=rja
Electrically conductive chemical vapor deposited (CVD) diamond has shown almost zero electrode wear, even at short pulse
durations, which is extremely important for maintaining the electrode shape throughout the EDM process.
http://www.scientific.net/KEM.257-258.535
http://www.electrochemsci.org/papers/vol2/2050355.pdf
