Applied Research Frontiers
Title
Sintering of α-Alumina in Powder Form and Characterization of Some Mechanical Properties
Authors
Erdem UZUN*a and Yasemin YILDIZ YARARb
aDepartment of Physics, Kamil Özdağ Faculty of Science, Karamanoğlu Mehmetbey University, 70100-Karaman, Turkey.
bDepartment of Physics, Faculty of Arts & Science, Yıldız Technical University, 34220-stanbul, Turkey.
*Corresponding author E-mail address: erdemuzun@kmu.edu.tr (Erdem UZUN)*; yarar@yildiz.edu.tr (Yasemin YILDIZ YARAR)
Article History
Publication details: Received: 26th October 2022; Revised: 21st December 2022; Accepted: 21st December 2022; Published: 30th December 2022
Cite this article
UZUN E.; YARAR Y. Y. Sintering of α-Alumina in Powder Form and Characterization of Some Mechanical Properties. Appl. Res. Front., 2022, 1(3), 17-21.
Abstract
Some sintering properties of α-alumina in powder form were investigated and the effects of sintering temperature on some mechanical properties were tested. Alumina powders were moistened with distilled water, granulated, pressed and sintered. The best granulation rate has been achieved with a moisture content of 6%. Pressed α-alumina powders were fully sintered at temperatures of 1550°C and above. In sintered samples, water absorption and surface porosity were not observed, and moreover 98% of the theoretical density was achieved. Hardness, fracture toughness and fracture strength of the sintered samples were measured. Moreover, the colour of alumina ceramics changes from white to cream with increasing sintering temperature.
Keywords
alumina; sintering; harness; fracture toughness
