alloys, iridio-platinum defined in 1909 yearalloys, iridio-platinum - Alloys, Iridio-Platinum;
alloys, iridio-platinum - Platinum is capable of being united to most other metals, the alloys being as a rule more fusible than platinum itself. It occurs in nature in combination with a rare metal called indium, with which it is often alloyed; the resulting metal is called indio-platinum, and though still malleable is harder than platinum, and unattacked by aqua regia, it is also much less readily fusible than platinum itself. Silver is hardened, but rendered brittle, by being alloyed with very small quantities of platinum.
near alloys, iridio-platinum in Knolik
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