My belief is that the Pd-Ag works because it is able to support a high
D/Pd at the surface because the diffusion rate is lower than pure Pd.
Also, it does not crack. I have tried pure silver, but it does not
absorb D.
Ed
On Mar 14, 2009, at 8:12 PM, [email protected] wrote:
In reply to Edmund Storms's message of Fri, 13 Mar 2009 15:00:02
-0600:
Hi,
[snip]
A problem exists with respect to Type A Pd, which is claimed to be
used for gas purification. However, only the Pd075Ag25 alloy is used
for this purpose because this alloy, unlike pure Pd, does not crack
upon reacting with H2. Nevertheless, Fleischmann claimed the Type A
is
pure Pd. The Pd in the hydrogen generator used by BARC was the Pd-Ag
alloy. Fleischman also used cathodes identified as being the Pd-Ag
alloy and claimed good success. The confusion lies in what Type A Pd
is really made of.
Ed
I wonder if the lack of cracking is the reason it worked, or perhaps
it had more
to do with the presence of Silver. Has anyone tried a pure Silver
cathode?
(Much cheaper than Pd. ;)
Regards,
Robin van Spaandonk
http://rvanspaa.freehostia.com/Project.html
