Nitridation of Al-Mg-Si alloys through dynamic heating

Roslinda Shamsudin, Saiful Rizam Shamsudin, Abdul Razak Daud, Muhammad Azmi Abdul Hamid

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)195-200
Number of pages6
JournalSains Malaysiana
Volume36
Issue number2
Publication statusPublished - Dec 2007

Fingerprint

heating
thermogravimetry
composite materials
oxides
high gain
gases
alloying
chemical reactions
chambers
atmospheres
oxygen
curves
products
diffraction
metals
x rays
temperature

Keywords

  • A/N
  • Dynamic heating
  • Nitridation
  • Thermogravitmetry

ASJC Scopus subject areas

  • General

Cite this

Nitridation of Al-Mg-Si alloys through dynamic heating. / Shamsudin, Roslinda; Shamsudin, Saiful Rizam; Daud, Abdul Razak; Abdul Hamid, Muhammad Azmi.

In: Sains Malaysiana, Vol. 36, No. 2, 12.2007, p. 195-200.

Research output: Contribution to journalArticle

Shamsudin, Roslinda ; Shamsudin, Saiful Rizam ; Daud, Abdul Razak ; Abdul Hamid, Muhammad Azmi. / Nitridation of Al-Mg-Si alloys through dynamic heating. In: Sains Malaysiana. 2007 ; Vol. 36, No. 2. pp. 195-200.
@article{9673425c7e9043feb5f5395e236b730d,
title = "Nitridation of Al-Mg-Si alloys through dynamic heating",
abstract = "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.",
keywords = "A/N, Dynamic heating, Nitridation, Thermogravitmetry",
author = "Roslinda Shamsudin and Shamsudin, {Saiful Rizam} and Daud, {Abdul Razak} and {Abdul Hamid}, {Muhammad Azmi}",
year = "2007",
month = "12",
language = "English",
volume = "36",
pages = "195--200",
journal = "Sains Malaysiana",
issn = "0126-6039",
publisher = "Penerbit Universiti Kebangsaan Malaysia",
number = "2",

}

TY - JOUR

T1 - Nitridation of Al-Mg-Si alloys through dynamic heating

AU - Shamsudin, Roslinda

AU - Shamsudin, Saiful Rizam

AU - Daud, Abdul Razak

AU - Abdul Hamid, Muhammad Azmi

PY - 2007/12

Y1 - 2007/12

N2 - 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.

AB - 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.

KW - A/N

KW - Dynamic heating

KW - Nitridation

KW - Thermogravitmetry

UR - http://www.scopus.com/inward/record.url?scp=40749084349&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=40749084349&partnerID=8YFLogxK

M3 - Article

VL - 36

SP - 195

EP - 200

JO - Sains Malaysiana

JF - Sains Malaysiana

SN - 0126-6039

IS - 2

ER -