The effect of cooling rate in molten salt electro-carburisation process
In the recent development of a new process of electro-carburisation of mild steel in 800 ?C molten carbonate based salts, further investigation has been carried out to study the effects of the cooling rate after the electro-carburisation process. In the process, the mild steel to be carburised was m...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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2012
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| Online Access: | https://eprints.ums.edu.my/id/eprint/18743/1/The%20Effect%20of%20Cooling%20Rate%20in%20Molten%20Salt%20Electro.pdf |
| _version_ | 1825713276841885696 |
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| author | Nancy Julius Siambun Willey Liew George Zheng Chen Yeo K. Beng |
| author_facet | Nancy Julius Siambun Willey Liew George Zheng Chen Yeo K. Beng |
| author_sort | Nancy Julius Siambun |
| collection | UMS |
| description | In the recent development of a new process of electro-carburisation of mild steel in 800 ?C molten carbonate based salts, further investigation has been carried out to study the effects of the cooling rate after the electro-carburisation process. In the process, the mild steel to be carburised was made the cathode and an inert SnO2 as anode. Salt mixture of Na2CO3-NaCl (mole ratio 4:1) was used as the electrolyte, and the process was carried out at voltage range of 1.0 to 2.5 V for 60 min, and thereafter cooled at certain rate. As revealed by the optical microscopy, the microstructural changes in samples that have been electro-carburised and thereafter cooled either rapidly or naturally in air, were featured by the increase of the carbon rich at the expense of the original ferrite phase near the surface of the samples. Micro-hardness profiles measured from the surface to the centre of the electro-carburised sample presented clear evidence of carbon penetration as a function of the electrolysis voltage, and significant effects of cooling rate after the electro-carburisation process. |
| first_indexed | 2024-03-06T02:54:03Z |
| format | Article |
| id | ums.eprints-18743 |
| institution | Universiti Malaysia Sabah |
| language | English |
| last_indexed | 2024-03-06T02:54:03Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | ums.eprints-187432018-02-09T07:16:59Z https://eprints.ums.edu.my/id/eprint/18743/ The effect of cooling rate in molten salt electro-carburisation process Nancy Julius Siambun Willey Liew George Zheng Chen Yeo K. Beng In the recent development of a new process of electro-carburisation of mild steel in 800 ?C molten carbonate based salts, further investigation has been carried out to study the effects of the cooling rate after the electro-carburisation process. In the process, the mild steel to be carburised was made the cathode and an inert SnO2 as anode. Salt mixture of Na2CO3-NaCl (mole ratio 4:1) was used as the electrolyte, and the process was carried out at voltage range of 1.0 to 2.5 V for 60 min, and thereafter cooled at certain rate. As revealed by the optical microscopy, the microstructural changes in samples that have been electro-carburised and thereafter cooled either rapidly or naturally in air, were featured by the increase of the carbon rich at the expense of the original ferrite phase near the surface of the samples. Micro-hardness profiles measured from the surface to the centre of the electro-carburised sample presented clear evidence of carbon penetration as a function of the electrolysis voltage, and significant effects of cooling rate after the electro-carburisation process. 2012 Article PeerReviewed text en https://eprints.ums.edu.my/id/eprint/18743/1/The%20Effect%20of%20Cooling%20Rate%20in%20Molten%20Salt%20Electro.pdf Nancy Julius Siambun and Willey Liew and George Zheng Chen and Yeo K. Beng (2012) The effect of cooling rate in molten salt electro-carburisation process. Advance Material Research, 576. pp. 264-267. https://doi.org/10.4028/www.scientific.net/AMR.576.264 |
| spellingShingle | Nancy Julius Siambun Willey Liew George Zheng Chen Yeo K. Beng The effect of cooling rate in molten salt electro-carburisation process |
| title | The effect of cooling rate in molten salt electro-carburisation process |
| title_full | The effect of cooling rate in molten salt electro-carburisation process |
| title_fullStr | The effect of cooling rate in molten salt electro-carburisation process |
| title_full_unstemmed | The effect of cooling rate in molten salt electro-carburisation process |
| title_short | The effect of cooling rate in molten salt electro-carburisation process |
| title_sort | effect of cooling rate in molten salt electro carburisation process |
| url | https://eprints.ums.edu.my/id/eprint/18743/1/The%20Effect%20of%20Cooling%20Rate%20in%20Molten%20Salt%20Electro.pdf |
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