platinum-rhodium alloy

platinum-rhodium alloy

[′plat·ən·əm ′rō·dē·əm ′al‚ȯi]
(metallurgy)
An alloy with up to 40% rhodium; as concentration of rhodium increases, so do chemical resistance and hardness (although less hard than for platinum-iridium alloys); used as a catalyst to make nitric acid, in thermocouples, and in rayon spinnerets.
References in periodicals archive ?
Experimental melts for refining of platinum and platinum-rhodium alloy from iron with content of the latter from 0.
Chemical composition of platinum-rhodium alloy after oxidation induction melting in periclase crucible and subsequent EBM Product name Weight share of elements, % Pt Rh Pd Ir Initial scrap 92.