“Ti, Ta, Nb, and Zr are the conventional capacitor materials on which to form anodic oxide dielectric films. They have high melting temperatures. This technically limits fabrication of RSP-ed preforms. Low-melting property is one of the favorable factors to produce homogenous preforms by RSP. Making alloy compositions complex is another factor to form amorphous alloy. Accordingly, multi-component alloy systems with low-melting temperature tend to have high glass forming ability, which are well-known in the amorphous alloy research field.”
Thanks for posting, I believe Tesla was using John goodenough patents