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Alloying of titanium with small amounts of noble metals markedly improves its corrosion resistance in reducing‐type acids without any impairment of its high resistance to oxidizing media. The mixed potentials of titanium noble metal alloys are more noble than the critical potential for passivity of titanium in the same environment. Passivity is observed in hydrogen‐saturated systems without the presence of a redox system more oxidizing than the hydrogen electrode. The mixed potential of titanium noble metal alloys is much more sensitive to traces of oxidizing agents than unalloyed metal.
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Stern et al. (1959) studied this question.
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