Hi Tom - interesting question as the use of cryogenic treatment of metals
is not a new subject. There are a number of established companies who
"cryotreat" gears, tooling, stamping dies, forgings, etc. for improved
material properties. Just like in the heat treatment of metals, the
metallic grain structure(s) are changed to alter a specific physical
characteristic such as hardness, tensile strength, elongation, etc. .
However, printed wiring assemblies are not comprised of metals only and a
cryotreatment could have serious impact on the organic materials (e.g
laminate, plastics, silicon die) so I would be highly skeptical that such
a treatment would provide a universal beneficial response.
Dave Hillman
Rockwell Collins
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Tom Stearns <[log in to unmask]>
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There is a process in High End Audio which purports to enhance equipment
performance , called CryoTreatment.
In this process the audio gear is subjected to a ramp down to -281F (or
cooler, but not below -320F), followed by a soak of 20 to 40 hours,
followed by a specific warm-up cycle back to R/T.
It is postulated that the technical explanation for the enormous
listening benefits of the process is a re-arrangement or refinement of
the crystal structure of the conductor metals. The effect is so powerful
that objective listeners reported a significant improvement in audio
quality when the AC power cord for a preamp was so treated. I doubt my
aging ears are responsive to subtleties of this nature.
Anybody care to estimate how an electronic assembly, surface-mount or
otherwise, including semiconductor devices, would fare thru this
process?
Tom Stearns
3 Brander Court
Nashua, NH
03063
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