Creep of Mg-PSZ at room temperature

Journal Article · Mon Feb 28 23:00:00 EST 1994 · Journal of the American Ceramic Society; (United States)

DOI:https://doi.org/10.1111/j.1151-2916.1994.tb05341.x· OSTI ID:7046433

Finlayson, T R ^[1]; Gross, A K ^[2]; Griffiths, J R ^[3]; Kisi, E H ^[4]

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1. Monash Univ., Clayton, Victoria (Australia). Dept. of Physics
2. Monash Univ., Clayton, Victoria (Australia). Dept. of Materials Engineering
3. CSIRO, Kenmore, Queensland (Australia). Div. of Manufacturing Technology
4. Griffith Univ., Nathan, Queensland (Australia). Faculty of Science and Technology

Transient [beta], or Andrade, creep occurs when magnesia-partially-stabilized zirconia is loaded in tension at room temperature. The equation relating the longitudinal or tensile creep strain [var epsilon][sub l][sup c] to the tensile stress, [sigma], and to the time, t, has been determined to be [var epsilon][sub l][sup c] = A[sigma][sup m]t[sup n] in which the constants A, m, and n depend on the phase content of the zirconia. Observations are reported of the tetragonal-to-monoclinic and tetragonal-to-orthorhombic phase transformations which occur during creep: there is also a progressive development of microcracking. It is shown that a combination of these phenomena can account for the observed creep behavior.

• OSTI ID: 7046433
• Journal Information: Journal of the American Ceramic Society; (United States), Journal Name: Journal of the American Ceramic Society; (United States) Vol. 77:3; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360202 -- Ceramics
Cermets
& Refractories-- Structure & Phase Studies
360203* -- Ceramics
Cermets
& Refractories-- Mechanical Properties
ALKALINE EARTH METAL COMPOUNDS
CHALCOGENIDES
CREEP
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
MECHANICAL PROPERTIES
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
TENSILE PROPERTIES
TRANSITION ELEMENT COMPOUNDS
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES