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CORROSION-RESISTANT MULTI-LAYER EXPLOCLAD METALLIC MATERIAL

CORROSION-RESISTANT MULTI-LAYER EXPLOCLAD METALLIC MATERIAL. PENZA STATE UNIVERSITY Penza , Russia. International Application WO2010/036139 A1. Applicants. Rozen Andrei Evgenievich Los Irina Sergeevna Pervukhin Leonid Borisovich Perelygin Jury Petrivich Gordopolov Jury Alexandrovich

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CORROSION-RESISTANT MULTI-LAYER EXPLOCLAD METALLIC MATERIAL

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  1. CORROSION-RESISTANT MULTI-LAYER EXPLOCLAD METALLIC MATERIAL PENZA STATE UNIVERSITY Penza, Russia

  2. International Application WO2010/036139 A1

  3. Applicants Rozen Andrei Evgenievich Los Irina Sergeevna Pervukhin Leonid Borisovich Perelygin Jury Petrivich Gordopolov Jury Alexandrovich Pervukhina Olga Leonidjvna

  4. Applicants Kiry Gennady Vladimirovich Abramov Pavel Ivanovich Usaty Sergei Gennadievich Kryukov Dmitry Borisovich Denisov Igor Vladimirovich Rozen Andrei Andreevich

  5. International Patent Classification C23F 13/00 Inhibiting corrosion of metals by anodic or cathodic protection B32B 7/02 Layered products in respect of physical properties, e.g. hardness

  6. Pitting corrosion conditions Availability of haloid ions in corrosive environment: Cl¯, J¯, Br¯ Displacement of electrochemical potential to positive sense

  7. Contact protection Protected metal has more positive electrochemical potential Protector has more negative electrochemical potential

  8. Prevention of pitting corrosion by protector

  9. Without oxidant for outer layerOH¯, Cl¯, H⁺

  10. Example11% solutionNaCl

  11. With oxidant for outer layer NO3⁻, ClO⁻, O2, CrO2⁻, Cr2O72⁻

  12. Example21% solutionNaCl + O2

  13. Double-sided contact with different corrosive environments

  14. Problems which should be resolved by explosive welding Full-strength welds at all interlayer bounds Minimum thickness of transitional interlayer zones Considerable area of multilayer semifinished product Integrity of outerlayer

  15. Multi-layer exploclad material

  16. Corrosion resistance

  17. Corrosion testing Solution NaCl 0.1 М Time 20 days 20 С

  18. Bending test 80 120

  19. Bending test Crack 147

  20. Bending test

  21. Conclusions The generation principle for multilayer structural materials with high resistance to pitting corrosion was proposed International Application WO2010/036139 A1 The combinations of odd and even layers was selected Third-layer and four-layer materials was prepared by explosive welding

  22. PENZA STATE UNIVERSITY metal@pnzgu.ru THANK YOU ATTENTION

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