HIGH-FREQUENCY INDUCTION HEAT SINTERING OF ULTRA-FINE AL2O3-(ZRO2+X%MOL Y2O3) BIOCERAMICS | ||
| JES. Journal of Engineering Sciences | ||
| Article 12, Volume 34, No 5, September and October 2006, Pages 1525-1533 PDF (568.42 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.21608/jesaun.2006.111079 | ||
| Author | ||
| Khalil Abdelrazek Khalil* | ||
| Permanent: Aswan High Institute of Energy, South Valley University, Aswan, Egypt Currently: Division of Advanced Materials Engineering, RCIT, Chonbuk National University, Jeonju 561-756, South Korea | ||
| Abstract | ||
| Alumina–zirconia composites Al2O3–20 vol. % yttria stabilized zirconia containing two types of yttria stabilized zirconia: 3mol% yttria doped ZrO2 (3YSZ) and 8mol% yttria doped ZrO2 (8YSZ) were consolidated very rapidly to full density by high frequency induction heat sintering (HFIHS). A comparison between 3YSZ and 8YSZ as a second phase toughening alumina has been made. Effects of sintering temperature on the mechanical properties have been studied. The consolidated samples were investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The microhardness, strength and toughness of the composites are determined. The results showed that, 3YSZ is the most effective as a second phase toughening alumina than 8YSZ. Al2O3-3YSZ composites with higher mechanical properties and small grain size developed through this technique. | ||
| Keywords | ||
| High frequency induction heat sintering; Yttria stabilized zirconia; toughness; hardness; nanostructures | ||
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