Residual stress and mechanical properties of Al₂O₃/ZrO₂ functionally graded material prepared by EPD from 2‐butanone based suspension

Abstract

Abstract

Electrophoretic deposition (EPD) is an attractive forming process to fabricate plate shaped binary functionally graded materials (FGMs) from suitable stable suspensions. In the present work, the capability to produce Al₂O₃ and ZrO₂ functionally graded bulk material by means of EPD from a non‐aqueous stable suspension based on 2‐butanone, n‐butylamine and cellulose nitrate solution is presented. The EPD processing parameters and sintering are described, and the density of the FGM composite, hardness, toughness and residual stresses are measured using indentation methods on cross‐sections of the sample. Scanning electron microscopy confirmed that the sintered body is an FGM.

Keywords:

• Residual stress
• Mechanical properties
• Functionally graded materials
• ZTA

This work has been financially supported by the University of Malaya (Kuala Lumpur, Malaysia), under grant no. P0051‐2008B. The authors are grateful for the grants.