Re:iPhones are allergic to helium
by akiselev on Tuesday October 30, 2018 @08:25PM
(#18342419)
Not just any opening: just about any microscopic crack would let it out and most non-metal materials are effectively porous when trying to contain helium under pressure. It's even used to detect leaks in high vacuum chambers.
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Re:iPhones are allergic to helium
by Pulcinella on Tuesday October 30, 2018 @09:13PM
(#18342625)
You don’t even need cracks. Helium (and hydrogen) can diffuse through metal, especially at high temperatures. Hydrogen embrittlement is a problem for processes that use high temp hiydrogen like the Haber process.
Re:iPhones are allergic to helium
by DoctorOetker on Wednesday October 31, 2018 @04:29PM
(#18349026)
how is it typically dealt with? regular annealing?
Re:iPhones are allergic to helium
by Pulcinella on Wednesday October 31, 2018 @07:37PM
(#18350152)
I’m not sure about in modern processes, but Bosch’s original solution for the Haber-Bosch industrial process was to just periodical replace an expendable steel liner in the reaction vessel.