Iranian Journal of Materials Science and Engineering
Iran University of Science & Technology
Mon, Nov 11, 2024
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Volume 18, Issue 4 (December 2021)
IJMSE 2021, 18(4): 1-14 |
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Al-Reyahi A, Degs S Y, Issa A, Khattari Z, Abu Al Sayyed M. Assessment of Structure, Dielectric and Gamma-Shielding Properties of Chemically Treated Natural Kaolinitic Clay. IJMSE 2021; 18 (4) :1-14
URL: http://ijmse.iust.ac.ir/article-1-2114-en.html
URL: http://ijmse.iust.ac.ir/article-1-2114-en.html
Abstract: (9041 Views)
The structural properties of a natural clay sample (51% kaolinite) were tweaked to suit specific applications. H2SO4 and NaOH (1.0 M) treatment caused structural alterations and a significant release of Al ions compared to Si ions. Chemical treatment caused structural alterations, according to XRD analysis. FTIR analysis also indicated higher density of polar surface groups upon treatment which affected the corresponding dielectric behaviors. Dielectric measurements shown the suitable application of the materials either as dielectrical insulator and this dependent on the applied frequency. Acid treated kaolinite was reported to be a promising dielectric at 10 and 1000 Hz. With appropriate mass attenuation coefficients (μ/ρ) 12.098-12.182 cm2/g and a high half value layer of 10 cm at 10 keV, kaolinite and other treated forms were adequate shielding materials.
Keywords: Kaolinite, Acid/alkali treatment, Physicochemical characteristics, Dielectric and shielding properties
Type of Study: Research Paper |
Subject:
Ceramics
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