Elastic modulus in rigid Al{sub 2}O{sub 3}/ZrO{sub 2} ceramic laminates

Journal Article · Wed Oct 01 04:00:00 EDT 1997 · Scripta Materialia

DOI:https://doi.org/10.1016/S1359-6462(97)00205-4· OSTI ID:541023

Moya, J S; Sanchez-Herencia, J A; Bartolome, J F ^[1]; Tanimoto, T ^[2]

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1. CSIC, Madrid (Spain). Inst. de Ciencia de Materiales
2. Shonan Inst. of Tech., Fujisawa, Kanagawa (Japan)

In previous works it has been shown that by making a three-layer composite in which the central region contains the matrix oxide and stabilized zirconia and the surface layers contain the matrix oxide and unstabilized zirconia, strength can be substantially enhanced relative to the monolithic materials containing the oxide matrix and either stabilized or unstabilized zirconia. The magnitude of the surface compressive stresses can be varied controlling the thickness of the outer layers and by proper thermal treatment in which the relative amounts of the monoclinic and tetragonal phases in the outer layers are controlled or by varying the volume fraction of total zirconia in the component. Often, the residual stresses are tailored to obtain high surface compression and a moderate bulk tension. In the present investigation, the authors have studied the effects of macroscopic residual stresses on stress intensities in the different layers of the Al{sub 2}O{sub 3}/ZrO{sub 2} laminates and the influence of the layered design on the elastic modulus of these materials.

• OSTI ID: 541023
• Journal Information: Scripta Materialia, Journal Name: Scripta Materialia Journal Issue: 7 Vol. 37; ISSN 1359-6462; ISSN SCMAF7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM OXIDES
COMPOSITE MATERIALS
DESIGN
FRACTURE PROPERTIES
LAYERS
RESIDUAL STRESSES
SAMPLE PREPARATION
STRESS INTENSITY FACTORS
YOUNG MODULUS
ZIRCONIUM OXIDES