CORROSION RESEARCH ROUND‐UP

TITANIUM Influence of palladium on resistance and passivation. The metal laboratory of the Metallgesellschaft A.G., Frankfurt/Main, has investigated the influence of a palladium admixture on the corrosion resistance of titanium and titanium alloys in 20% hydrochloric acid. It was found that the addition of 0.1% palladium resulted in an improvement of the corrosion resistance not only of non‐alloyed titanium but also of titanium alloys. In solutions containing nitric acid above the passivation limit (0.13%) the corrosion resistance of certain titanium alloys was also improved. With non‐alloyed titanium, the palladium admixture is able to compensate fully the increase in corrosion otherwise caused by the iron contents.—(U. Zwicker, Metalloberfläche, 1960, 14 (11), 334–337.)