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Aspects in Mining & Mineral Science

On the Role of Sintering on Microstructural Development of Alumina Toughened Nanocomposites

  • Open or CloseMeena KL1 and Srivatsan TS2 *

    1Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, India

    1Department of Mechanical Engineering, The University of Akron, USA

    *Corresponding author: Srivatsan TS, Department of Mechanical and Industrial Engineering, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand -247667, India

Submission: October 11, 2022; Published: November 11, 2022

DOI: 10.31031/AMMS.2022.10.000733

ISSN : 2578-0255
Volume10 Issue2


In this research paper, the physical properties, and microstructural characteristics of 3 mol % Yttria-Stabilized-Zirconia (3YSZ) matrix reinforced with 10 volume percent of alumina (Al2O3) is presented and briefly discussed. The composites were developed using the techniques of Conventional Sintering [1600 °C, 5 °C/minute and held for 6 hours] and Microwave Sintering [1600 °C, 25 °C/minute and held for 1 hour] under pressure-less condition. The sintered powders were subsequently compacted using a uniaxial cold isostatic press at a pressure of 200MPa. The relative density and average grain size of both the conventional sintered samples and microwave sintered samples were determined and found to be [density: 98.16±0.15, grain size: 600nm] and [density:99.29±0.10, grain size: 421nm], while the thermal conductivity was determined to be 2.3W/mK and 2.6W/mK, respectively. A near uniform microstructure was observed for both the samples. The microwave sintered samples were observed to have superior physical properties when compared one-on-one with the conventional sintered counterpart. This study provides useful information specific to the development of thermal barrier coatings and for use in dental applications.

Keywords:Microwave sintering (MW); Conventional sintering (CS); Alumina-toughened-zirconia (ATZ); Physical properties; Microstructure analysis

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