It was my understanding that wear facing rods work as a function of the flux environment created by the arc consuming the flux itself. I could be wrong but I don't think I've ever seen a wear facing TIG rod. However I have a friend that uses a flux core wire that wear faces and they use it to build up worn continuous miner wheels so they can machine them back to spec (Carbide tooling of course). Those wheels are tough as heck when they are done.