Spherical engineering Ca-TZP ceramics made from baddeleyite: fabrication, structure and mechanical properties

The spherification method was adapted to baddeleyite-based ceramics fabrication. Novel calcia stabilized tetragonal zirconia (Ca-TZP) ceramics with sufficiently high values of hardness (11.73 ± 0.12 GPa), fracture toughness (9.15 ± 0.24 MPa m0.5) and Young's modulus (217 ± 14 GPa) was produced....

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Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 730; pp. 363 - 366
Main Authors Rodaev, Vyacheslav V., Zhigachev, Andrey O., Korenkov, Viktor V., Golovin, Yuri I.
Format Journal Article
LanguageEnglish
Published Lausanne Elsevier B.V 11.07.2018
Elsevier BV
Subjects
Baddeleyite
Ceramics
Comminution
Fracture toughness
Grinding mills
Mechanical properties
Metal oxides
Modulus of elasticity
Organic chemistry
Phase composition
Phase transitions
Spheres
Spherification
Tetragonal zirconia
Tetragonal zirconia polycrystals
Zirconia ceramics
Zirconium
Zirconium dioxide
Zirconia ceramics
Mechanical properties
Baddeleyite
Phase composition
Spherification
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Summary:The spherification method was adapted to baddeleyite-based ceramics fabrication. Novel calcia stabilized tetragonal zirconia (Ca-TZP) ceramics with sufficiently high values of hardness (11.73 ± 0.12 GPa), fracture toughness (9.15 ± 0.24 MPa m0.5) and Young's modulus (217 ± 14 GPa) was produced. Dependences of the material microstructure, its phase composition and mechanical properties on sintering temperature and the doping agent concentration were investigated. Fabricated spherical Ca-TZP ceramics made from baddeleyite may be considered as perspective engineering ceramics, for example, for milling processes as an alternative to grinding media made of chemically precipitated zirconia.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2018.06.029