Role of Y{sub 2}O{sub 3}, CaO, MgO additives on structural and microstructural behavior of zirconia/mullite aggregates

Journal Article · Mon Jul 23 00:00:00 EDT 2012 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4736910· OSTI ID:22069097

Mishra, D K; Prusty, Sasmita; Mohapatra, B K; Singh, S K; Behera, S N ^[1]

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1. Advanced Materials Technology Department, CSIR-Institute of Minerals and Materials Technology, Bhubaneswar 751 013, Odisha (India)

Zirconia mullite (MUZ), Y{sub 2}O{sub 3}-MUZ, CaO-MUZ and MgO-MUZ composites, synthesized through plasma fusion technique, are becoming important due to their commercial scale of production within five minutes of plasma treatment from sillimanite, zircon and alumina mixture. The X-ray diffraction studies reveal the monoclinic zirconia phase in MUZ composite whereas mixed monoclinic, tetragonal and cubic phases of zirconia have been observed in Y{sub 2}O{sub 3}, CaO, MgO added MUZ composites. The Y{sub 2}O{sub 3}, CaO and MgO additives act as sintering aids to favour the transformation and stabilisation of tetragonal and cubic zirconia phases at room temperature. These additives also play a key role in the development of various forms of microstructure to achieve dense MUZ composites.

• OSTI ID: 22069097
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1461; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ADDITIVES
ALUMINIUM OXIDES
CALCIUM OXIDES
COMPOSITE MATERIALS
CUBIC LATTICES
MAGNESIUM OXIDES
MICROSTRUCTURE
MIXTURES
MONOCLINIC LATTICES
MULLITE
PHASE TRANSFORMATIONS
PLASMA
SINTERING
TEMPERATURE RANGE 0273-0400 K
TETRAGONAL LATTICES
X-RAY DIFFRACTION
YTTRIUM OXIDES
ZIRCONIUM OXIDES