Processing zirconia by sintering/hot isostatic pressing

Journal Article · Sun May 01 04:00:00 EDT 1988 · Advanced Ceramic Materials; (USA)

DOI:https://doi.org/10.1111/j.1551-2916.1988.tb00212.x· OSTI ID:5998504

Druschitz, A P ^[1]

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1. General Motors Research Labs., Warren, MI (USA)

Sintering followed by hot isostatic pressing is a potential method for improving the mechanical properties of ceramic materials. Encouraging data have been presented and published but these data do not clearly show the origin of the benefits. Here, the effects of green density, time, temperature, and pressure on sintered density, grain size, and pore size of slip-cast ZrO{sub 2}-3 mol% Y{sub 2}O{sub 3} are described. The data demonstrate that, when compared to pressureless sintering, the sintering/hot isostatic pressing process produces an equivalent maximum density at reduced temperature and significant reductions in pore size, but no reduction in minimum grain size. The maximum density obtainable by the sinter/hot isostatic pressing process was limited by both open porosity and large pores; the processing conditions required to produce the maximum process advantage are described.

• OSTI ID: 5998504
• Journal Information: Advanced Ceramic Materials; (USA), Journal Name: Advanced Ceramic Materials; (USA) Vol. 3:3; ISSN ACEME; ISSN 0883-5551
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201* -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
CASTING
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL STRUCTURE
DATA
DIFFRACTION
EXPERIMENTAL DATA
FABRICATION
GRAIN SIZE
HOT PRESSING
INFORMATION
MATERIALS WORKING
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
PRESSING
SCATTERING
SINTERING
SIZE
SLIP CASTING
TRANSITION ELEMENT COMPOUNDS
X-RAY DIFFRACTION
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES