Suppose I were to take two conductors and connect one of each to the negative and positive terminals of a battery. After some time, the conductors should be at equilibrium with the voltage potentials of the battery (i.e. - one conductor should be at +V and the other at -V having developed by the net loss and gain of electrons, respectively). Removing the battery essentially forms a capacitor: each plate being charged and, when connected electrically, will discharge. However, if these plates are never connected electrically, they should in theory maintain their potentials forever. Now, what if one were to heat these plates to a very high temperature (one at which significant blackbody radiation would occur, say above 2000C). Would these plates maintain their charge potentials? Would it matter what atmosphere they were in? (i.e. - a perfect vacuum is perfectly insulating, vs. air which can be regarded as a dielectric) Would it matter how they were heated? (i.e. - via radiative heat transfer vs. Joule heated via inductive coupling) I'm just trying to figure out if a surface can maintain a charge applied at room temperature at high temperatures, and under what conditions the charge can be dissipated. Thanks!