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 ?
The offered range of Type R thermocouples is especially suitable for very high temperature applications because, it is manufacturing by using finest platinum and platinum-rhodium alloy and is second to none in terms of
Experimental melts for refining of platinum and platinum-rhodium alloy from iron with content of the latter from 0.
Platinum-rhodium alloys were used in thermocouples for precise temperature measurement.