Efficiency of some stress-corrosion inhibitors

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

Research output: Contribution to journalArticlepeer-review


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. 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. 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.

Original languageEnglish
Pages (from-to)371-373
Number of pages3
JournalSoviet Materials Science
Issue number5
StatePublished - 1 Sep 1966
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science (all)


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