Growth of plasma electrolytic oxidation coatings on Nb and corresponding corrosion resistance
Source abstract
Abstract
Abstract Plasma electrolytic oxidation (PEO) coatings were formed, respectively in three silicate-based, phosphate-based and aluminate-based electrolytes on niobium, with the aim to explore the relationships between electrolyte composition, dielectric breakdown behavior and corresponding corrosion resistance. The initial growth stages of the anodic coatings were studied, and result shows that an impedance falling stage (from about 200 V to 400 V) starts at the emergence of spark discharge accompanied with the surface morphology evolution from compact to porous. The PEO coatings were characterized through electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PDP) methods. Results show the coatings fabricated in (NaPO 3 ) 6 electrolyte provide the best corrosion resistance. It attributes to the effective thickness of the compact inner layer rather than the entire thickness of the coating that decrease diffusion of corrosion medium.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Magnesium Alloys: Properties and Applications · Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (50)
Show source-provided references
1. Niobium based coatings for dental implants10.1016/j.apsusc.2010.10.021 ↗
2. A removal torque and histomorphometric study of commercially pure niobium and titanium implants in rabbit bone10.1034/j.1600-0501.1991.020103.x ↗
3. Niobium and niobium alloys in nuclear power10.1016/0029-5493(72)90065-9 ↗
4. Niobium and tantalum in materials selection10.1007/BF03258681 ↗
5. Anodic luminescence, structural, photoluminescent, and photocatalytic properties of anodic oxide films grown on niobium in phosphoric acid10.1016/j.apsusc.2015.07.174 ↗
6. Plasma electrolysis for surface engineering10.1016/S0257-8972(99)00441-7 ↗
7. Mechanisms underlying the formation of thick alumina coatings through the MAO coating technology10.1016/S0257-8972(02)00918-0 ↗
8. Influence of nano-SiC on microstructure and property of MAO coating formed on AZ91D magnesium alloy10.1016/S1003-6326(15)63800-6 ↗
9. Electrochemical corrosion behavior of composite coatings of sealed MAO film on magnesium alloy AZ91D10.1016/j.electacta.2005.08.026 ↗
10. Electrochemical corrosion behavior of modified MAO film on magnesium alloy AZ31 irradiated by high-intensity pulsed ion beam10.1016/j.surfcoat.2012.06.053 ↗
11. Strategies to improve the corrosion resistance of microarc oxidation (MAO) coated magnesium alloys for degradable implants: prospects and challenges10.1016/j.pmatsci.2013.08.002 ↗
12. Corrosion performance of MAO coatings on AZ31 Mg alloy in simulated body fluid vs. Earle's Balance Salt Solution10.1016/j.apsusc.2015.12.026 ↗
13. Suggested mechanism for the MAO ceramic coating on aluminium substrates using bipolar current mode in the alkaline silicate electrolytes10.1016/j.apsusc.2014.04.120 ↗
14. The effect of MAO processing time on surface properties and low temperature infrared emissivity of ceramic coating on aluminium 6061 alloy10.1016/j.infrared.2013.06.006 ↗
15. Influence of electrolyte temperature on properties and infrared emissivity of MAO ceramic coating on 6061 aluminum alloy10.1016/j.infrared.2014.07.009 ↗
16. Orange–red photoluminescence of Nb2O5:Eu3+, Sm3+ coatings formed by plasma electrolytic oxidation of niobium10.1016/j.jallcom.2016.06.192 ↗
17. The improved thermal radiation property of SiC doped microarc oxidation ceramic coating formed on niobium metal for metal thermal protective system10.1016/j.surfcoat.2016.10.070 ↗
18. Modification of tantalum surface via plasma electrolytic oxidation in silicate solutions10.1016/j.electacta.2013.10.047 ↗
19. Generation mechanism of microdischarges during plasma electrolytic oxidation of Al in aqueous solutions10.1016/j.corsci.2008.10.039 ↗
20. Plasma formation mechanism of microarc oxidation10.1016/j.electacta.2014.01.047 ↗
21. Initial stages of AZ91 Mg alloy micro-arc anodizing: growth mechanisms and effect on the corrosion resistance10.1016/j.electacta.2013.08.023 ↗
22. Corrosion properties of plasma electrolytic oxidation coatings on an aluminium alloy – the effect of the PEO process stage10.1016/j.matchemphys.2015.04.058 ↗
23. Surface characterization of oxides grown on the Ti-13Nb-13Zr alloy and their corrosion protection10.1016/j.corsci.2013.02.007 ↗
24. In situ study of dew point corrosion by electrochemical measurement10.1016/j.corsci.2013.03.001 ↗
25. Microarc oxidation coatings formed on Ti6A14V in Na2SiO3 system solution: microstructure, mechanical and tribological properties10.1016/j.surfcoat.2005.10.044 ↗
26. Physicochemical characterization of passive films on niobium by admittance and electrochemical impedance spectroscopy studies10.1016/j.electacta.2005.03.065 ↗
27. A novel heterogeneous hybrid by incorporation of Nb2O5 microspheres and reduced graphene oxide for photocatalytic H2 evolution under visible light irradiation10.1039/C5RA05348J ↗
28. Effect of electrolyte additives on performance of plasma electrolytic oxidation films formed on magnesium alloy AZ91D10.1016/j.electacta.2006.10.066 ↗
29. Semiconducting properties of oxide films formed onto an Nb electrode in NaOH solutions10.2298/JSC0803351J ↗
30. Technical information
31. Electron-transfer reactions at semiconducting anodic niobium oxide films10.1016/0013-4686(75)85031-6 ↗
32. The role of defects on the structural and magnetic properties of Nb2O510.1016/j.jallcom.2015.09.019 ↗
33. Effect of oxygen vacancies in anodic titanium oxide films on the kinetics of the oxygen electrode reaction10.1134/S1023193507020012 ↗
34. Role of electrolyte chemistry on electronic and in vitro electrochemical properties of micro-arc oxidized titania films on Cp Ti10.1016/j.electacta.2013.05.032 ↗
35. Günterschultze · 1937
36. Theory of electrical breakdown during formation of barrier anodic films10.1016/0013-4686(77)80042-X ↗
37. Degradation and breakdown of silicon dioxide films on silicon10.1063/1.108233 ↗
38. Impact ionization, trap creation, degradation, and breakdown in silicon dioxide films on silicon10.1063/1.352936 ↗
39. Surface characterisation and corrosion behaviour of niobium treated in a Ca- and P-containing solution under sparking conditions10.1016/j.electacta.2016.03.069 ↗
40. The anodic behavior of binary Mg-Al alloys in KOH-aluminate solutions10.1016/S0010-938X(98)00019-5 ↗
41. The outward–inward growth behavior of microarc oxidation coatings in phosphate and silicate solution10.1016/j.matlet.2010.06.053 ↗
42. Broad and intense NIR luminescence from rare earth doped SiO2–Nb2O5 glass and glass ceramic prepared by a new sol gel route10.1016/j.jlumin.2015.08.054 ↗
43. Die Modifikationen des Niobpentoxids10.1002/ange.19660780104 ↗
44. Niobium compounds: preparation, characterization, and application in heterogeneous catalysis10.1021/cr9800208 ↗
45. Effect of voltage on properties of microarc oxidation films prepared in phosphate electrolyte on Zr-1Nb alloy10.1016/j.surfcoat.2013.01.059 ↗
46. Ceramic oxide coating formed on beryllium by micro-arc oxidation10.1016/j.corsci.2017.04.001 ↗
47. An investigation of the coating/substrate interface of plasma electrolytic oxidation coated aluminum10.1016/j.surfcoat.2015.08.050 ↗
48. A mechanism for the growth of a plasma electrolytic oxide coating on Al10.1016/j.electacta.2016.04.186 ↗
49. Corrosion behavior of 2024 aluminum alloy anodized in presence of permanganate and phosphate ions10.1007/s11998-012-9459-x ↗
50. Investigation of the growth processes of coatings formed by AC plasma electrolytic oxidation of aluminium10.1016/j.electacta.2009.06.088 ↗