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Dissolution and passivity of nickel in hydrogen fluoride + water + hydrogen chloride system

The anodic behavior of Ni in HF-HCl aq. solns. was examd. The current efficiency for Ni dissoln. was detd. from the wt. loss of Ni polarized anodically, assuming that Ni dissolves as Ni2+. The dissoln. rate decreases markedly for a HF concn. of .apprx.50%. [on SciFinder (R)]

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