Mangus, Are you sure its is 130c, and not 130f? I can't really cite where i read it, Maybe the journal of applied physics, but i was under the impression that we not want to run an Rb oven much beyond 80c. Ideally i believe it was 50c, but the warm up time was a few weeks.
I'd like to know why they need to run so hot Steve On Thu, Dec 1, 2011 at 6:04 AM, Steve . <iteratio...@gmail.com> wrote: > Attila, > > Great pictures, by the way. > > My experience with alkaline metal is limited to sodium, potassium and > lithium. Mostly sodium, which after a long process is precipitated from > sodium hydroxide as a reagent. These are all contained in an oven under > very precise temperature and flow control, as the analytes which are passed > over change very specific attributes of a cell. These are the results which > are reported. Eventually the cell fails and the alkaline metal attacks the > cheaper mounting hardware(even though the oven maintains an argon > atmosphere). If not caught in time it will work it's way down the > thermocouple, under the sheath and in to the support electronics. Rb is > claimed to be much more active than any of the metals i have experience > with so i assumed that corrosion was a preliminary sign of low life span. > > For completeness, I maintain the instruments in an environmental > analytical laboratory. (Sulfur analyzers, CO2, CHN, Calorimeters, ion > chromatograph, inductive couple plasma mass specs, gas chromatography mass > spec, organic carbon analyzer. etc,etc,etc.) > > When i say alkalines i mean alkalies, ie, elements which belong to the > alkalinity group. 99.9999% or better purity, traceable grade. > > Steve > > > > On Thu, Dec 1, 2011 at 5:36 AM, Attila Kinali <att...@kinali.ch> wrote: > >> On Thu, 1 Dec 2011 05:19:24 -0500 >> "Steve ." <iteratio...@gmail.com> wrote: >> >> > Looking at those pictures with a different mind set, I see now that the >> > washers are not corroded as I had suspected. It's amazing how they >> > resemble badly corroded washers which are so typically found in ovens in >> > which alkalines have leaked. >> >> If you mean "alkaline batteries leaking" with "alkalines leaking", >> then the corrosion you see there is from something else than >> alkali metals. In alkaline batteries you have a potpury of different >> highly reactive stuff. What exactly corrodes what and how is something >> i cannot tell you, but it's definitly not elemental alkalimetals like >> you have in Rb cells. >> >> Attila Kinali >> >> -- >> Why does it take years to find the answers to >> the questions one should have asked long ago? >> >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. >> > > _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.