Technique for tensile creep testing of ceramics

Journal Article · Fri Sep 01 04:00:00 EDT 1989 · Journal of the American Ceramic Society; (USA)

DOI:https://doi.org/10.1111/j.1151-2916.1989.tb06287.x· OSTI ID:7172487

Druschitz, A P; Schroth, J G ^[1]

---

1. Metallurgy Dept., General Motors Research Labs., Warren, MI (US)

The effect of hot isostatic pressing on the bend strength of ZrO{sub 2}-3 mol% Y{sub 2}O{sub 3} was critically dependent on the presintering process. Optimally sintered bodies contained no open porosity and exhibited large increases in strength following hot isostatic pressing. When open porosity of as little as 0.3% persisted after sintering, hot isostatic pressing increased the bulk density, but little or no increase in strength was realized. Two-parameter Weibull analysis of the strength data has been used to quantify the strength improvement obtained following hot isostatic pressing. Typical fracture-initiating flaws have been identified through optical and electron microscopy.

• OSTI ID: 7172487
• Journal Information: Journal of the American Ceramic Society; (USA), Journal Name: Journal of the American Ceramic Society; (USA) Vol. 72:9; ISSN JACTA; ISSN 0002-7820
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360201 -- Ceramics
Cermets
& Refractories-- Preparation & Fabrication
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
BULK DENSITY
CHALCOGENIDES
CREEP
DENSITY
FABRICATION
HOT PRESSING
LATTICE PARAMETERS
MATERIALS WORKING
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
POROSITY
PRESSING
SINTERING
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES