Diffusion zinc coatings in the system of corrosion protection of tubes and fasteners for structural elements

Authors

  • V. I. bolshakov Chair of Materials Technology and Materials Processing, State Educational Institution “Prydniprovsk State Academy of Building and Architecture”, 24-a, Chernyshevsky Str., Dnipropetrovsk, Ukraine, Ukraine
  • N. I. Sotskov Closed Joint-Stock Company “Melnikov TsNIIProektstalkonstruktsia”. 49, Architect Vlasov Str. Moscow, Russian Federation, Ukraine
  • D. A. Sukhomlyn Chair of Physical Chemistry, State Educational Institution “Ukrainian State Chemical Engineering University”. 8, Gagarin Ave., Dnipropetrovsk, Ukraine, Ukraine
  • Ye. V. Proskurkin Laboratory of Metallic Diffusion Coatings for Tubes, State Enterprise “Ya.Ye. Osada Scientific Research Tube Instutute”, 1-a, Pisarzhevsky Str., Dnipropetrovsk, Ukraine, Ukraine

Keywords:

zinc diffusion coating, corrosion resistance, electrochemical measurement of the mechanical properties.

Abstract

Study of protective properties of diffusion zinc coatings (DZC) on tubes and fasteners for structural elements under mechanical loads applied to threaded tube joints in weak corrosive media. Procedure. As a material for this research work, diffusion zinc coated high-strength bolts М24 were taken. Electrochemical behavior of zinced specimens was studied under action of mechanical loads. It was established that the rate of anodic dissolution of zinc coating grows significantly with the growth of mechanical loads  applied  to  the  specimens. Results  obtained. Based  on  the  obtained  data,  it  was  shown  that  the  dissolution  rate  of  stressed specimens at a load level of 0.8 ϭв and equal positive potentials gets 2.5 to 3 times higher than that for unstressed specimens. Scientific novelty. Regularities of corrosion behavior of diffusion zinc coatings of a new generation applied on metal products working in stressconditions were established. Practical significance. Appreciation of the mechanism and acquisition of qualitative regularities of the corrosion process in protective diffusion zinc coatings with the objective of improvement of service life and reliability of tubes and fasteners for structural elements.

Author Biographies

V. I. bolshakov, Chair of Materials Technology and Materials Processing, State Educational Institution “Prydniprovsk State Academy of Building and Architecture”, 24-a, Chernyshevsky Str., Dnipropetrovsk, Ukraine

Dr. Tech. Sc., Prof.

N. I. Sotskov, Closed Joint-Stock Company “Melnikov TsNIIProektstalkonstruktsia”. 49, Architect Vlasov Str. Moscow, Russian Federation

Cand. Tech. Sc.

D. A. Sukhomlyn, Chair of Physical Chemistry, State Educational Institution “Ukrainian State Chemical Engineering University”. 8, Gagarin Ave., Dnipropetrovsk, Ukraine

Cand.Chem. Sc., Docent

Ye. V. Proskurkin, Laboratory of Metallic Diffusion Coatings for Tubes, State Enterprise “Ya.Ye. Osada Scientific Research Tube Instutute”, 1-a, Pisarzhevsky Str., Dnipropetrovsk, Ukraine

Cand. Tech. Sc., Senior Researcher

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Published

2016-03-22

Issue

Section

Proceedings in memory of Starodubov