Strength and residual stresses of functionally graded Al2O3/ZrO2 discs prepared by electrophoretic deposition期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Strength and residual stresses of functionally graded Al₂O₃/ZrO₂ discs prepared by electrophoretic deposition

Authors:	G. Ann , S. Hecht-Mijic, H. Richter, O. Van der Biest,J. Vleugels

Affiliation:	^aDepartment of Metallurgy and Materials Engineering (MTM), K.U. Leuven, Kasteelpark Arenberg 44, B-3001 Heverlee, Belgium ^bCeramTec AG, Fabrikstrasse 23, D-73207 Plochingen, Germany

Abstract:	Biaxial strength testing of functionally graded Al₂O₃/ZrO₂ discs revealed that the strength of such discs, prepared by electrophoretic deposition, was almost doubled from 288 MPa for pure Al₂O₃ to 513 MPa for the graded discs; this was due to the compressive surface residual thermal stresses in the Al₂O₃ surface layer caused by the graded compositional profile. The surface compressive stress measured by means of X-ray diffraction was compared with the analytically calculated stress distribution in the graded component.

Keywords:	Functionally graded materials Bending test Residual stresses Electrophoretic deposition
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