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Efficiency of some stress-corrosion inhibitors

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Soviet materials science : a transl. of Fiziko-khimicheskaya mekhanika materialov / Academy of Sciences of the Ukrainian SSR Aims and scope

Summary

  1. 1.

    A study of the time-to-rupture of grade 30 Kh steel tested in 6 N H2SO4 solution at a stress of 120 kgf/mm2 in the presence of various stress-corrosion inhibitors has shown that KPI-1 is the most effective inhibitor, its addition bringing about a 340-fold increase in time-to-rupture.

  2. 2.

    The stress dependence of time-to-rupture of 30 Kh steel in a 6 N H2SO4 solution containing 3g/l KPI-1 has been determined, and it has been shown that KPI-1 retains its stress-corrosion inhibiting power within a wide range of applied stress (60–120 kgf/mm2) and exposure time (up to 104min).

  3. 3.

    The increased effectiveness of KPI-1 in the low stress range is attributable to an increase in the degree of adsorption indicated by a slight shift in the electrode potential of the steel specimens toward more electropositive values.

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Authors and Affiliations

  1. Institute of Physics and Mechanics AS UkrSSR, L'vov

    E. M. Gutman, A. K. Mindyuk & G. V. Karpenko

Authors
  1. E. M. Gutman
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  2. A. K. Mindyuk
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  3. G. V. Karpenko
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Gutman, E.M., Mindyuk, A.K. & Karpenko, G.V. Efficiency of some stress-corrosion inhibitors. Mater Sci 1, 371–373 (1966). https://doi.org/10.1007/BF00715288

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  • DOI: https://doi.org/10.1007/BF00715288

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