COMPREHENSIVE INVESTIGATION OF PHASE FORMATION MECHANISM AND PHYSICO-MECHANICAL PROPERTIES OF Ca-Mg-SILICATE

Authors

  • Myat Myat-Htun Biomaterials Niche Group, School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Pulau Penang, Malaysia
  • Hossein Mohammadi Biomaterials Niche Group, School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Pulau Penang, Malaysia
  • Ahmad-Fauzi Mohd Noor Biomaterials Niche Group, School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Pulau Penang, Malaysia
  • Masakazu Kawashita Department of Inorganic Biomaterials, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, Tokyo, Japan
  • Yanny Marliana Baba Ismail Biomaterials Niche Group, School of Materials and Mineral Resources Engineering, Engineering Campus, Universiti Sains Malaysia, Pulau Penang, Malaysia

DOI:

https://doi.org/10.11113/aej.v11.16676

Keywords:

Akermanite, High-energy planetary milling, Milling speed, Phase formation mechanism, Sintering temperature

Abstract

This study aimed to investigate extensively the full phase formation mechanism from the lowest temperature to form the phases to the optimum temperature to crystallize akermanite. The effects of various milling speeds and sintering temperatures on physico-mechanical properties of akermanite prepared using high-energy planetary milling method were also investigated. The minimum formation temperature of akermanite phase (above 800°C) was determined by X-Ray diffraction (XRD) and differential thermal analysis. XRD analysis revealed akermanite had formed through gradual phase development with the increase in temperature. Below 700C, akermanite was structurally unstable while multiple transient compounds (low clinoenstatite, wollastonite, monticellite, and diopside) coexisted, as indicated by low peak intensities. Single phase akermanite was obtained by heat-treating at 1100C. Physical studies suggested the densest akermanite ceramic feature, with tensile strength range of 25.26 ± 1.41 MPa32.10 ± 2.13 MPa and Vickers microhardness range of 1.39 ± 0.04 GPa4.94 ± 0.26 GPa could be obtained at 1250°C.

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Published

2021-03-16

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Articles