High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts
Many alloys used at high temperature in industrial processes are Ni-based and many others contain it in appreciable quantities, so it is of interest to evaluate the performance of pure nickel in order to determine the behavior of its alloys once the elements responsible for their protection have bee...
Saved in:
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2017/8929873 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849684109013549056 |
|---|---|
| author | J. Porcayo-Calderon J. J. Ramos-Hernandez Jan Mayén E. Porcayo-Palafox G. K. Pedraza-Basulto J. G. Gonzalez-Rodriguez L. Martinez-Gomez |
| author_facet | J. Porcayo-Calderon J. J. Ramos-Hernandez Jan Mayén E. Porcayo-Palafox G. K. Pedraza-Basulto J. G. Gonzalez-Rodriguez L. Martinez-Gomez |
| author_sort | J. Porcayo-Calderon |
| collection | DOAJ |
| description | Many alloys used at high temperature in industrial processes are Ni-based and many others contain it in appreciable quantities, so it is of interest to evaluate the performance of pure nickel in order to determine the behavior of its alloys once the elements responsible for their protection have been depleted due to accelerated corrosion processes in the presence of vanadium-rich molten salts. Due to this, this work presents the study of Ni behavior in NaVO3-V2O5 mixtures at different temperatures. The behavior of pure nickel was determined by both electrochemical and mass loss measurements. The results show that the aggressiveness of the vanadium salts is increased by increasing both the V2O5 content and temperature. V2O5 addition considerably increases the current densities of the anodic and cathodic reactions. The corrosion process of Ni is modified due to the presence of its corrosion products, and its presence increases the activation energy by at least one order of magnitude. Although nickel shows a high reactivity in vanadium-rich salts, its reaction products are highly stable and protect it from the corrosive medium because the corrosion reactions trap the vanadium and block the migration of nickel ions. |
| format | Article |
| id | doaj-art-cb58a1940ed943fc8a06ab89f1932e26 |
| institution | DOAJ |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-cb58a1940ed943fc8a06ab89f1932e262025-08-20T03:23:34ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422017-01-01201710.1155/2017/89298738929873High Temperature Corrosion of Nickel in NaVO3-V2O5 MeltsJ. Porcayo-Calderon0J. J. Ramos-Hernandez1Jan Mayén2E. Porcayo-Palafox3G. K. Pedraza-Basulto4J. G. Gonzalez-Rodriguez5L. Martinez-Gomez6CIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoInstituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, 62210 Cuernavaca, MOR, MexicoCENIDET, Tecnológico Nacional de México, Prolongación Palmira s/n Esq. Apatzingán, Col. Palmira, 62490 Cuernavaca, MOR, MexicoCIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoFacultad de Ingeniería, UNACAR, 24180 Ciudad del Carmen, CAM, MexicoCIICAp, Universidad Autónoma del Estado de Morelos, Avenida Universidad 1001, 62209 Cuernavaca, MOR, MexicoInstituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Avenida Universidad s/n, 62210 Cuernavaca, MOR, MexicoMany alloys used at high temperature in industrial processes are Ni-based and many others contain it in appreciable quantities, so it is of interest to evaluate the performance of pure nickel in order to determine the behavior of its alloys once the elements responsible for their protection have been depleted due to accelerated corrosion processes in the presence of vanadium-rich molten salts. Due to this, this work presents the study of Ni behavior in NaVO3-V2O5 mixtures at different temperatures. The behavior of pure nickel was determined by both electrochemical and mass loss measurements. The results show that the aggressiveness of the vanadium salts is increased by increasing both the V2O5 content and temperature. V2O5 addition considerably increases the current densities of the anodic and cathodic reactions. The corrosion process of Ni is modified due to the presence of its corrosion products, and its presence increases the activation energy by at least one order of magnitude. Although nickel shows a high reactivity in vanadium-rich salts, its reaction products are highly stable and protect it from the corrosive medium because the corrosion reactions trap the vanadium and block the migration of nickel ions.http://dx.doi.org/10.1155/2017/8929873 |
| spellingShingle | J. Porcayo-Calderon J. J. Ramos-Hernandez Jan Mayén E. Porcayo-Palafox G. K. Pedraza-Basulto J. G. Gonzalez-Rodriguez L. Martinez-Gomez High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts Advances in Materials Science and Engineering |
| title | High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts |
| title_full | High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts |
| title_fullStr | High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts |
| title_full_unstemmed | High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts |
| title_short | High Temperature Corrosion of Nickel in NaVO3-V2O5 Melts |
| title_sort | high temperature corrosion of nickel in navo3 v2o5 melts |
| url | http://dx.doi.org/10.1155/2017/8929873 |
| work_keys_str_mv | AT jporcayocalderon hightemperaturecorrosionofnickelinnavo3v2o5melts AT jjramoshernandez hightemperaturecorrosionofnickelinnavo3v2o5melts AT janmayen hightemperaturecorrosionofnickelinnavo3v2o5melts AT eporcayopalafox hightemperaturecorrosionofnickelinnavo3v2o5melts AT gkpedrazabasulto hightemperaturecorrosionofnickelinnavo3v2o5melts AT jggonzalezrodriguez hightemperaturecorrosionofnickelinnavo3v2o5melts AT lmartinezgomez hightemperaturecorrosionofnickelinnavo3v2o5melts |