Small angle neutron scattering study of a gehlenite-based ceramic fabricated from industrial waste

• Main Authors: Chee, Wah Loy, Matori, Khamirul Amin, Zainuddin, Norhazlin, Whitten, Andrew E., Campo, Liliana de, Md Nasir, Nur Izzah, Baharuddin Pallan, Nur Fadilah, Mohd Zaid, Mohd Hafiz, Alassan, Zarifah, Schmid, Siegbert
• Format: Article
• Language: English
• Published: Trans Tech Publication 2019
• Online Access: http://psasir.upm.edu.my/id/eprint/82180/1/Small%20angle%20neutron%20scattering%20study%20of%20a%20gehlenite-based%20ceramic%20fabricated%20from%20industrial%20waste.pdf; http://psasir.upm.edu.my/id/eprint/82180/
• Institution: Universiti Putra Malaysia

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 (Na₂ CaSi₃ O₈ and Ca₄ Si₂ O₇ F₂ ). 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.