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Start Over Author "Keivan Davami" Journal journal of materials research and technology
2 results on '"Keivan Davami"'

1. Synthesis, characterization and formation mechanisms of nanocrystalline akermanite powder

Author

Fariborz Tavangarian, Caleb A. Zolko, and Keivan Davami

Subjects
Mechanical activation, Akermanite, Formation mechanism, Nanocrystalline ceramics, Mining engineering. Metallurgy, TN1-997
Abstract

Pure nanocrystalline akermanite was successfully synthesized by mechanical activation and heat treatment of talc, calcium carbonate, and silicate. Powders were characterized by thermogravimetric analysis (TGA), x-ray diffractometry (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The formation mechanism was studied in depth. These results showed that akermanite was produced by the formation and consumption of transitionary compounds such as enstatite, wollastonite, larnite, and merwinite. Pure akermanite was synthesized with a crystalline size of 34 nm after ball milling for 20 h and subsequent heat treatment at 900 °C for 1 h.

Published
2021
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2. Synthesis, characterization and formation mechanisms of nanocrystalline akermanite powder

Author

Keivan Davami, Caleb A. Zolko, and Fariborz Tavangarian

Subjects
lcsh:TN1-997, Thermogravimetric analysis, Materials science, Scanning electron microscope, 02 engineering and technology, engineering.material, 01 natural sciences, Wollastonite, Biomaterials, Åkermanite, Mechanical activation, Larnite, 0103 physical sciences, Ball mill, lcsh:Mining engineering. Metallurgy, 010302 applied physics, Akermanite, Metals and Alloys, 021001 nanoscience & nanotechnology, Nanocrystalline material, Surfaces, Coatings and Films, Nanocrystalline ceramics, Chemical engineering, Transmission electron microscopy, Formation mechanism, Ceramics and Composites, engineering, 0210 nano-technology
Abstract

Pure nanocrystalline akermanite was successfully synthesized by mechanical activation and heat treatment of talc, calcium carbonate, and silicate. Powders were characterized by thermogravimetric analysis (TGA), x-ray diffractometry (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The formation mechanism was studied in depth. These results showed that akermanite was produced by the formation and consumption of transitionary compounds such as enstatite, wollastonite, larnite, and merwinite. Pure akermanite was synthesized with a crystalline size of 34 nm after ball milling for 20 h and subsequent heat treatment at 900 °C for 1 h.

Published
2021

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