yes the silver alloy (anywhere from 20 to 25 % seems OK with 23% perhaps 
better).  It doesn't seem to load as high but it doesn't "crack" near as much.  
 Regular Pd will often crack as it gets very hard on loading.  My personal 
preference is 5% Rh but the cost is prohibitive.  The 10% Y is also good.  The 
pure Pd (better than 4 nines) is very very temperamental.   Another approach is 
to lightly coat your "rod" with Nafion to keep the surface impurities down 
during electrolysis which helps when your chemistry is a little sloppy (like 
mine often is).  But you still need to not crack the Pd.   Again load very 
slowly and preferably down around 10 C.  I really hope you do start down the 
experimental path- we need more experimenters. If it is just going to be a few 
quick and dirty tries, you might want to look at co-deposit systems.  Pd on Au 
on Cu is a reasonable place to start.  (again, do your plating and loading cold 
before your do you runs). Some info is hard to find and is often over looked 
but the only real "secret" I know in this field is tenacity.
DennisDate: Tue, 14 May 2013 14:08:42 -0400
Subject: Re: [Vo]:If I want to see it for myself...
From: [email protected]
To: [email protected]

DJ Cravens <[email protected]> wrote: 

but if it is replication (at
lower densities) you seek- try the Pd 23% Ag material used in diffusion
systems."Diffusion systems" is what I have referred to as "hydrogen filters." 
As noted hydrogen with silver. This is what JM recommended to Martin. It loads 
well without cracking. So they said and he confirmed.

- Jed
                                          

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