Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10
The corrosion behaviour of both crystalline and largely amorphous forms of the Fe-based glass forming alloy, Fe43Cr16Mo16C15B10 alloy was investigated. Two different methods were used to induce transformation to the amorphous form of the alloy: laser melting and HVOF spraying. Both methods produced...
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Elsevier
2012
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| Online Access: | https://eprints.nottingham.ac.uk/3252/ |
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| author | Bakare, M.S. Voisey, K.T. Chokethawai, K. McCartney, D.G. |
| author_facet | Bakare, M.S. Voisey, K.T. Chokethawai, K. McCartney, D.G. |
| author_sort | Bakare, M.S. |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | The corrosion behaviour of both crystalline and largely amorphous forms of the Fe-based glass forming alloy, Fe43Cr16Mo16C15B10 alloy was investigated. Two different methods were used to induce transformation to the amorphous form of the alloy: laser melting and HVOF spraying. Both methods produced largely amorphous material, however the high brittleness of the alloy makes it susceptible to cracking during laser treatment, hence this technique is not suitable for largescale application. Potentiodynamic scanning showed that in 0.5M H2SO4 and 3.5% NaCl electrolytes both amorphous forms of the alloy had better corrosion resistance (lower current densities for -200 to +1000mV SCE) compared to the crystalline material. The laser treated material and HVOF coating performed similarly in 3.5% NaCl. In 0.5M H2SO4 the HVOF coating had a lower current density than the laser melted material for almost all of the potential range -300 to +1000mV SCE. The improved corrosion behaviour of the largely amorphous material is attributed to its homogeneity, and particularly to the elimination of the Mo-rich phase that underwent preferential corrosion in the crystalline form of the material. |
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| format | Article |
| id | nottingham-3252 |
| institution | University of Nottingham Malaysia Campus |
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| last_indexed | 2025-11-14T18:21:20Z |
| publishDate | 2012 |
| publisher | Elsevier |
| recordtype | eprints |
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| spelling | nottingham-32522020-05-04T16:32:51Z https://eprints.nottingham.ac.uk/3252/ Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 Bakare, M.S. Voisey, K.T. Chokethawai, K. McCartney, D.G. The corrosion behaviour of both crystalline and largely amorphous forms of the Fe-based glass forming alloy, Fe43Cr16Mo16C15B10 alloy was investigated. Two different methods were used to induce transformation to the amorphous form of the alloy: laser melting and HVOF spraying. Both methods produced largely amorphous material, however the high brittleness of the alloy makes it susceptible to cracking during laser treatment, hence this technique is not suitable for largescale application. Potentiodynamic scanning showed that in 0.5M H2SO4 and 3.5% NaCl electrolytes both amorphous forms of the alloy had better corrosion resistance (lower current densities for -200 to +1000mV SCE) compared to the crystalline material. The laser treated material and HVOF coating performed similarly in 3.5% NaCl. In 0.5M H2SO4 the HVOF coating had a lower current density than the laser melted material for almost all of the potential range -300 to +1000mV SCE. The improved corrosion behaviour of the largely amorphous material is attributed to its homogeneity, and particularly to the elimination of the Mo-rich phase that underwent preferential corrosion in the crystalline form of the material. Elsevier 2012-03-03 Article PeerReviewed Bakare, M.S., Voisey, K.T., Chokethawai, K. and McCartney, D.G. (2012) Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10. Journal of Alloys and Compounds, 527 . pp. 210-218. ISSN 1873-4669 Metallic glasses; HVOF coating; laser melting; corrosion; microstructure http://www.sciencedirect.com/science/article/pii/S0925838812004161 doi:10.1016/j.jallcom.2012.02.127 doi:10.1016/j.jallcom.2012.02.127 |
| spellingShingle | Metallic glasses; HVOF coating; laser melting; corrosion; microstructure Bakare, M.S. Voisey, K.T. Chokethawai, K. McCartney, D.G. Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title | Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title_full | Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title_fullStr | Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title_full_unstemmed | Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title_short | Corrosion behaviour of crystalline and amorphous forms of the glass forming alloy Fe43Cr16Mo16C15B10 |
| title_sort | corrosion behaviour of crystalline and amorphous forms of the glass forming alloy fe43cr16mo16c15b10 |
| topic | Metallic glasses; HVOF coating; laser melting; corrosion; microstructure |
| url | https://eprints.nottingham.ac.uk/3252/ https://eprints.nottingham.ac.uk/3252/ https://eprints.nottingham.ac.uk/3252/ |