Small Angle Neutron Scattering Study of a Gehlenite-Based Ceramic Fabricated from Industrial Waste

Abstract:

This paper presents a small angle neutron scattering (SANS) study of a novel porous gehlenite-based ceramic, synthesised from a homogeneous powder mixture of soda-lime-silicate (SLS) glass, α-alumina, calcite and calcium fluoride via solid-state sintering at 1200 °C. The products of sintering at single temperatures from 600 to 1200 °C are examined by X-ray diffraction (XRD). Sintering of the mixture below 1200 °C forms two intermediate phases (Na₂CaSi₃O₈ and Ca₄Si₂O₇F₂). Nepheline and α-alumina are minor phases in the gehlenite-based ceramic fabricated through sintering at 1200 °C. The microstructure of the gehlenite-based ceramic is investigated using field-emission scanning electron microscopy (FESEM) and SANS at the Australian Centre for Neutron Scattering. This study also evaluated the specific surface area of the gehlenite-based ceramic (~3.0 m² cm^–3) from quantitative analysis of SANS data.

• Periodical: Solid State Phenomena (Volume 290)
• Pages: 22-28
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.290.22
• Online since: April 2019
• Authors: Chee Wah Loy*, Khamirul Amin Matori, Norhazlin Zainuddin, Andrew E. Whitten, Liliana de Campo, Nur Izzah Md Nasir, Nur Fadilah Baharuddin Pallan, Mohd Hafiz Mohd Zaid, Nadakkavil Alassan Zarifah, Siegbert Schmid
• Keywords: Ceramic, Gehlenite, Neutron Scattering, Solid-State Sintering, Waste

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