It is unlikely that the SAME micro-scale features would re-appear - at least in Rossi's historical carbonyl process Ni particles. The particle shape with the high external surface area is a unique outcome from precipitatation from a highly volatile liquid. As the temperature rises to 500C, nickel will first sinter with the sharp edges dulling and adjacent particles growing together. After a melt, it will recrystalize into a smoother shape. What "grows" on its surface will depend on the chemistry inside the cell and the temperature. You have to do something to passivate the particles to keep them from sintering into a solid bulk at 500C. What I do is sugar-coat (with Fe2O3 nanopowder) the particles and this keeps them totally sintering together.
On Sat, Oct 18, 2014 at 1:47 PM, Eric Walker <eric.wal...@gmail.com> wrote: > On Sat, Oct 18, 2014 at 10:13 AM, Bob Higgins <rj.bob.higg...@gmail.com> > wrote: > > By the time the IH reactor is operating above 1000C, there are no nickel >> nanoparticles or nano-features of any kind left - they are all melted into >> larger agglomerations. >> > > Is it possible that the micro-scale features in the Ni might reappear upon > recrystallization? > > Eric > >
