Is there usually some Mn in Constantan too ? It may be key ingredient, as for alpha-beta phase frontiere, it change critical temperature like Ag on Pd...
2017-06-20 23:30 GMT+02:00 Bob Higgins <rj.bob.higg...@gmail.com>: > If you want Ni + Cu, just get some constantan thermocouple wire and cut it > up into pieces. Then you may want to ball mill to make into powder. > > On Tue, Jun 20, 2017 at 2:43 PM, <mix...@bigpond.com> wrote: > >> In reply to AlanG's message of Mon, 19 Jun 2017 23:22:32 +0000: >> Hi Alan, >> >> You might also try with Cu instead of silver, if your budget extends that >> far. >> Since the creation of the powders takes some time, you could do both in >> parallel? >> >> >Nickel and Silver are mutually insoluble (or only with great difficulty) >> >as has been pointed out. Following Jones' original post, I'm preparing a >> >simple experiment to test "mechanical alloying". I will ball-mill ~2 um >> >powders of the two metals for several hundred hours, using 3/8" tungsten >> >carbide balls for media. SEM/EDS will be used to examine the resulting >> >mixture. >> > >> >If the results appear to be successful, a further test will be done by >> >exposing the amalgam to flowing hydrogen at various temperatures, >> >looking for radiation as a signature of nuclear activity. Advice and >> >suggestions for this test are welcome. >> > >> >AlanG >> > >> Regards, >> >> Robin van Spaandonk >> >> http://rvanspaa.freehostia.com/project.html >> >> >
