To the Theory of Anticorrosion Alloying of Brasses

V. Yu. Kondrashin

Voronezh State University, Universitetskaya pl. 1, Voronezh, 394006 Russia

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Received October 15, 2003

Abstract — The protective effect produced by alloying was interpreted in terms of the gradient energy of the near-surface diffusion zone formed as a result of the anodic dissolution or self-dissolution of ternary phases. The general reasons for a changed tendency of such phases toward selective anodic dissolution and selective corrosion compared to nonalloyed phases were revealed. The method for quantitative estimation of the protective effect produced by small amounts of arsenic added to -brass was proposed. A number of alloying elements (As, P, Ni, and Au) to - and -brasses were found to be similar in the nature of the protective effect.