Structural, morphological properties and phase stabilisation criteria of the calcia-zirconia system. (17th November 2021)

• Record Type: Journal Article
• Authors: Kumar, Ankit; Kumar, Pravin; Dhaliwal, A. S.
• Is Part Of: Advances in applied ceramics. Volume 120:Number 5/8(2021)
• Page Start: 307
• Page End: 318
• Publication Date: 2021-11-17
• Subjects: Phase transition -- ZrO2 -- Rietveld refinement; Ceramics -- Periodicals; 620.1405
• DOI: 10.1080/17436753.2021.1978266
• Languages: English
• ISSNs: 1743-6753

Abstract

ABSTRACT: The phase evolution studies of zirconia, with 4–16 mol-% doping of calcium, have been carried out after sintering the pellets at 1400°C. From the X-ray diffractometer patterns, it is evident that the zirconia exists only in the monoclinic phase. However, Rietveld refinement of calcium-doped zirconia revealed the stabilisation in the monoclinic and cubic phases. With increasing calcium doping, the development of the cubic phase in zirconia is seen and at 16 mol-% doping of calcium, almost fully stabilised cubic phase of zirconia (∼97%) is achieved. The microstructure and elemental analyses of the sintered pellets are done using a field-emission scanning electron microscopy and energy-dispersive spectroscopy, respectively. Raman spectroscopic studies validate the findings of XRD. It is expected that the present study on calcium-doped zirconia opened a new channel for its potential applications in new technology such as oxygen sensors and solid electrolyte.