On Jul 23, 2009, at 7:46 PM, [email protected] wrote:
Perhaps rapid transport of H through the material is necessary, to
increase the
likelihood that a proton will tunnel into a host atom, where it may
then
"borrow" an electron from the host to become a sub-quantum atom?
High temperature operation may be key to this. There are lots of
prospects for CF lattices at higher operating temperatures. The high
temperatures are required for fast loading, and high diffusion rates.
There are lots of possible high temperature candidates, including a
wide variety of steels and alloys like PdCu, NiTi, and FeTi. LaNi5
(used in metal hydride batteries) operated in the general
neighborhood of 600 degrees C is a candidate. It might be that high
temperature loading followed by lower temperature operation in an
electro-migration (using high current density to drive a high
diffusion rate) driven mode is a good strategy.
Because lutetium has the smallest radius, and is the most dense of
the rare earth elements, it might be of academic interest along these
lines. It is also of interest because it has two diffusion
coefficients, depending on direction of diffusion with respect to its
hexagonal lattice. Anisotropy in diffusion can be large in non-fcc
metals. Yttrium exhibits a two to one diffusion anisotropy in the
590 K to 700 K range.
The structural disorder of metallic glasses might provide some of the
same benefits that co-deposition has brought, namely highly
repeatable results due to a wide variety of nano-structures and
surface features, and fast loading. In metallic glasses the site
occupation energies and jump rates vary in the extreme from site to
site, and interstitial site migrate as diffusion occurs. Metallic
glasses might also be of use in purging helium, even in an operating
state.
The primary information source for this post is Hydrogen in Metals
III, Springer.
I think an Edisonian search of high temperature hydrogen loaded
materials has great prospects, based on the theories posted in this
thread, and for reasons I've posted in regards to the deflation
fusion model. As operating temperature is increased the potential
candidates become overwhelming. Operating at high temperatures also
has the obvious potential benefit of achieving efficient Carnot cycle
energy conversion.
The money required for an Edisonian search of high temperature CF
lattices can probably only be obtained by wide-spread recognition
that cold fusion is real, and that likely will happen not via the
excess heat route, but rather through proof that nuclear reactions
are occurring. Perhaps hydrinos will provide a route to recognition
through the excess heat route, but that has been a long time coming
to fruition as well, and big bucks have been spent and with the
advantage of a theory with which to engineer experiments.
Best regards,
Horace Heffner
http://www.mtaonline.net/~hheffner/
