Quote:
Originally Posted by AlexanderHowl
Titanium possesses a higher friction coefficient and a lower heat capacity though, and it burns in an oxygen atmosphere. At the energy levels of a man portable railgun, a titanium armature will ignite. Of course, you can have titanium as the support structure, just as long as it does not contact the round you should be fine (a railgun made from bronze and titanium would actually be quite beautiful).
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There is no reason to use a metal at all. Titanium was simply listed as one of many materials that have lower thermal conductivity than bronze. Personally, i'd look at ferromagnetic ceramics.