Fabrication and flexural strength of ultrafine-grained yttria-stabilized zirconia

Journal Article · Sun Aug 01 00:00:00 EDT 1976 · Am. Ceram. Soc. Bull.; (United States)

OSTI ID:7347560

Rieth, P H ^[1]; Reed, J S; Naumann, A W

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1. Alfred Univ., NY

Ultrafine powders of yttria-stabilized zirconia were fabricated into specimens by die pressing, extrusion and slip casting. Gross pores present in unfired specimens varied with fabrication procedure and persisted in the fired microstructures. Pressure-cast specimens with no apparent internal pores larger than grain size and with as-fabricated surfaces containing surface pores approximately 2 ..mu..m exhibited mean flexural strengths as high as 129 kpsi. The ultimate flexural strength of extruded and pressed specimens appeared to be limited by residual coarse pores near the surface, and flexural strengths ranged as low as 16 kpsi.

• OSTI ID: 7347560
• Journal Information: Am. Ceram. Soc. Bull.; (United States), Vol. 55:8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ZIRCONIUM OXIDES
FLEXURAL STRENGTH
ADDITIVES
CASTING
EXTRUSION
FABRICATION
POROSITY
POWDERS
PRESSING
STABILIZATION
YTTRIUM OXIDES
CHALCOGENIDES
MATERIALS WORKING
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
ZIRCONIUM COMPOUNDS
360203* - Ceramics
Cermets
& Refractories- Mechanical Properties