Effect of dispersants on microstructures of nano alpha alumina developed from aluminium dross waste

Sofian, Anis Sofia and Samat, Noorasikin and Meor sulaiman, Meor Yusoff (2015) Effect of dispersants on microstructures of nano alpha alumina developed from aluminium dross waste. Advanced Materials Research, 1115. pp. 378-381. ISSN 1022-6680

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Abstract

This paper compares the effect of dispersants which are Sodium Laureth Sulfate (SLS)and distilled water (DW) on the crystallization, particle size distribution and morphological behavior of nano alpha Alumina (α-Al2O3) synthesized from Aluminium (Al) dross waste. The synthesizing of nano α-Al2O3 via wet milling method was performed using a planetary mill for 4 hours at a speed of 550 rpm. The nano α-Al2O3 powders with dispersants were characterized with xray diffraction (XRD), particle size analyzer (PSA) and transmission electron microscopy (TEM). XRD analysis shows the broadening and shifting of peaks after the sample was calcined at 1300 ̊C,indicating high crystallinity. The crystallite size of α-Al2O3 milled with SLS is also smaller than the α-Al2O3 milled with DW. These results are consistent with the PSA analysis in which the graphs displayed a symmetrical trend. Then, the PSA analysis is validated with TEM observation up to 100000x magnification, particularly for α-Al2O3 milled with SLS.

Item Type:	Article (Journal)
Additional Information:	4029/43921
Uncontrolled Keywords:	Nano Alpha Alumina; Dispersants; Particle Size; Crystallite Size; Morphology
Subjects:	T Technology > TP Chemical technology > TP200 Manufacture and use of chemicals
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Dr Noorasikin Samat
Date Deposited:	23 Jul 2015 16:29
Last Modified:	20 May 2016 15:57
URI:	http://irep.iium.edu.my/id/eprint/43921

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