Nitridation of Al-Mg-Si alloys through dynamic heating
Nitridation behaviour of Al-Mg-Si alloys as studied as a function of temperature by means of thermogravimetry method. A reactive gas, N2-4%H2 at a rate of 10 ml/min was purged into the thermogravimetry analyser chamber. The Al alloys were heated from 25°C to 625°C at the heating rate of 15°C/min and...
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my.unimap-67952009-08-11T02:03:48Z Nitridation of Al-Mg-Si alloys through dynamic heating Roslinda, Shamsudin Saiful Rizam, Shamsudin Abdul Razak, Daud Hamid, M.A .A A/N Dynamic heating Nitridation Thermogravitmetry Alloys Materials engineering Nitriding Nitridation behaviour of Al-Mg-Si alloys as studied as a function of temperature by means of thermogravimetry method. A reactive gas, N2-4%H2 at a rate of 10 ml/min was purged into the thermogravimetry analyser chamber. The Al alloys were heated from 25°C to 625°C at the heating rate of 15°C/min and then reduced to 3°C/min until it reached 1500°C. It was found that by varying the amount of Mg and Si in Al-Mg-Si alloys significantly influenced the growth of the composites. A differential thermogravimetric curve shows the Mg containing alloys experienced many steps of chemical reactions. This indicates that besides AlN presence as a major phase, other compounds also exist in the final product. The X-ray diffraction results confirmed the existence of oxide phases such as α-Al2O3, MgAl2O4 and MgO in addition to residual Si and Al metal. The presence of oxide compounds is believed to be due to the reaction between the alloying elements and residual oxygen gas left in the reaction atmosphere. It was also found that Si could play a role in promoting the weight gain of the composite produced. The heating rate has also a profound effect on the weight gain, whereby higher heating rate resulted in low yielded of AlN during the nitridation reaction of the Al-Mg-Si alloys. 2009-08-11T02:03:31Z 2009-08-11T02:03:31Z 2007-12 Article Sains Malaysiana, vol.36 (2), 2007, pages 195-200. 0126-6039 http://hdl.handle.net/123456789/6795 en Universiti Kebangsaan Malaysia |
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A/N Dynamic heating Nitridation Thermogravitmetry Alloys Materials engineering Nitriding |
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A/N Dynamic heating Nitridation Thermogravitmetry Alloys Materials engineering Nitriding Roslinda, Shamsudin Saiful Rizam, Shamsudin Abdul Razak, Daud Hamid, M.A .A Nitridation of Al-Mg-Si alloys through dynamic heating |
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Nitridation behaviour of Al-Mg-Si alloys as studied as a function of temperature by means of thermogravimetry method. A reactive gas, N2-4%H2 at a rate of 10 ml/min was purged into the thermogravimetry analyser chamber. The Al alloys were heated from 25°C to 625°C at the heating rate of 15°C/min and then reduced to 3°C/min until it reached 1500°C. It was found that by varying the amount of Mg and Si in Al-Mg-Si alloys significantly influenced the growth of the composites. A differential thermogravimetric curve shows the Mg containing alloys experienced many steps of chemical reactions. This indicates that besides AlN presence as a major phase, other compounds also exist in the final product. The X-ray diffraction results confirmed the existence of oxide phases such as α-Al2O3, MgAl2O4 and MgO in addition to residual Si and Al metal. The presence of oxide compounds is believed to be due to the reaction between the alloying elements and residual oxygen gas left in the reaction atmosphere. It was also found that Si could play a role in promoting the weight gain of the composite produced. The heating rate has also a profound effect on the weight gain, whereby higher heating rate resulted in low yielded of AlN during the nitridation reaction of the Al-Mg-Si alloys. |
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Article |
author |
Roslinda, Shamsudin Saiful Rizam, Shamsudin Abdul Razak, Daud Hamid, M.A .A |
author_facet |
Roslinda, Shamsudin Saiful Rizam, Shamsudin Abdul Razak, Daud Hamid, M.A .A |
author_sort |
Roslinda, Shamsudin |
title |
Nitridation of Al-Mg-Si alloys through dynamic heating |
title_short |
Nitridation of Al-Mg-Si alloys through dynamic heating |
title_full |
Nitridation of Al-Mg-Si alloys through dynamic heating |
title_fullStr |
Nitridation of Al-Mg-Si alloys through dynamic heating |
title_full_unstemmed |
Nitridation of Al-Mg-Si alloys through dynamic heating |
title_sort |
nitridation of al-mg-si alloys through dynamic heating |
publisher |
Universiti Kebangsaan Malaysia |
publishDate |
2009 |
url |
http://dspace.unimap.edu.my/xmlui/handle/123456789/6795 |
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1643788605853794304 |
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13.223943 |