Metals and metal hydrides folded and hammered repeatedly. Many folds followed by a lot of hammering (or pressing between rollers).
The cold rolling process has some similarities with this, and has been used by some LENR researchers. Also the spin melting and other strange metallurgic thecniques have been used. The results up to now are not so consistent though.
Some years ago I had the chance of analysing by SEM/EDX some samples that have been prepared with a technique very similar to the one you described: Ni powder and LiAl hydride synthered togheter (by compression and heat) to form small metal chips. The author said that he observed some heat developing when these samples were broken (this of course can be do to the high reactivity of the hydride with air and humidity), and he also got some strange result when analysed the samples with diffractometric techniques (some new elements were apparently present). However the subsequent SEM/EDX didn't revealed any new/anomalous elements.
Indeed. Ed Storms is currently pondering the fact that Boron powder is/was used as a reduction flux when smelting palladium, and that this resulted in the inclusion of boron oxide particles in the metal, which could in turn produce defects leading to nano-cracks internally as well as externally which in turn become 'hot spots' for the LENR reaction.
This is an interesting thought. There is an experiment carried out by Mastromatteo (that I often cite because it is one of the most compelling evidence of low energy transmutation) consisting of a thin film of Pd enclosed in a contained with H or D, and exposed to a very low power red laser beam. The Pd thin film produced some clear transmutations. The most interesting thing was that all samples were made with electronics grade materials (so extremely pure and well characterised): contamination can be definitively ruled out. Guess what? The Pd thin film was briefly ion-implanted with boron! (Actually Mastromatteo said that this step was not needed to get the effect, but IMO it cannot still be ruled out).
Probably the most simple and convenient way of obtaining metallic layers with controllable defects or inclusions is by electroplating. The electrolytic process seem to add some "spices" to materials, per se...
Yes, you are right , all coating, sputtering, electrolysis deposit way etc etc leave different species undesired.
Undesired but can Lenr react by back side.
For exemple, sputtering tend to leave argon atoms inside the substrat. Other techniques leave sulphur, boron, nitrogen , etc...
Mastromatteo is very competent and lowly