Micrograms, actually. Perhaps you only need a few atoms thickness on the nickel surface.
In fact it might work better that way, since the monatomic hydrogen splits and "keeps on going" into the interstices a few atoms down, where it densifies ... -----Original Message----- From: Terry Blanton > Ok, ok, I'm willing to give it a chance; but, assuming the entire ECat assembly is indeed copper, how much Cu can one expect to migrate into the Ni? Certainly not for the ratio of constantan 55/45; otherwise, there would be pressure leaks everywhere.
