Enhancing the Lifetime of Welded Joints Using the Protective Coating and Causes the Formation of Defects in Them∗

V. P. Bezborodov, Yu N. Saraev

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The paper shows the efficacy of eutectic Nickel coatings for protecting welded joints of steels against corrosion. It increases with increasing content of the eutectic and chemical compounds at the grain boundaries γ-solid solution based on Nickel. Refinement of the structure of the coatings and reduce their heterogeneity allows to increase the protective properties and durability of welded joints against corrosion. It is established that the probability of formation of cracks in the coatings increases with their thickness, intensity of heating and cooling after reflow, and also with increasing content of the eutectic and chemical compounds at the grain boundaries γ-solid solution based on Nickel. Shown to prevent the formation of cracks in the coatings when they are melt you can use optimal modes of heating and cooling of the composition. Modification of the structure of the coatings by grinding them and reducing heterogeneity allows to improve the resistance to crack formation and protective properties of welded joints against corrosion.

Original languageEnglish
Article number012023
JournalIOP Conference Series: Materials Science and Engineering
Volume142
Issue number1
DOIs
Publication statusPublished - 2 Sep 2016

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Protective coatings
Welds
Eutectics
Coatings
Defects
Chemical compounds
Nickel
Solid solutions
Grain boundaries
Corrosion
Cooling
Cracks
Nickel coatings
Heating
Steel corrosion
Crack initiation
Durability
Chemical analysis

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

Cite this

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