Preparation and characterization of γ-Al2O3 Al composite
Other Title(s)
تحضير و دراسة خصائص المتراكب γ-Al2O3 Al
Joint Authors
Mustafa, Hanan Jamil
Mahdi, Abd al-Hamid Rahim
Source
Issue
Vol. 57, Issue 3B (30 Sep. 2016), pp.1959-1967, 9 p.
Publisher
University of Baghdad College of Science
Publication Date
2016-09-30
Country of Publication
Iraq
No. of Pages
9
Main Subjects
Topics
Abstract EN
A cermet (ceramic-metal) composite have been prepared from alumina (γ-Al2O3) reinforced with aluminum (Al) for the concentrations of (0, 10, 20, 30, 40, & 50) wt.
%Al.
The cermet was formed by single axial pressing, sintered in vacuum atmosphere.
Compaction behaviors were studied in solid state sintering at sintering temperatures (400, 450, & 550) °C, sintering times (2, 4, & 6) hrs., and forming pressures (5, 10, 15) MPa, also in liquid phase sintering at (800 °C).
The cermet was characterized by x-ray diffraction (XRD) and by scanning electron microscope (SEM), also physical and mechanical properties have been studied.
SEM results showed the Al flowing inside the ceramic body due to uniform distribution of Al particles and due to sintering temperature (800 °C) have been used.
XRD results showed that there is no new phase formed between Al and Al2O3 after sintering due to there is no chemical reaction but physical reaction between them.
The existence of Al enhanced the physical properties as the sintering (time & temperature) and pressure increase.
Hardness values increased to 30 wt.
% Al then decreased due to Al ductility.
The oxide layer on the friction surfaces played important role for increasing wear rate.
American Psychological Association (APA)
Mustafa, Hanan Jamil& Mahdi, Abd al-Hamid Rahim. 2016. Preparation and characterization of γ-Al2O3 Al composite. Iraqi Journal of Science،Vol. 57, no. 3B, pp.1959-1967.
https://search.emarefa.net/detail/BIM-709516
Modern Language Association (MLA)
Mustafa, Hanan Jamil& Mahdi, Abd al-Hamid Rahim. Preparation and characterization of γ-Al2O3 Al composite. Iraqi Journal of Science Vol. 57, no. 3B (2016), pp.1959-1967.
https://search.emarefa.net/detail/BIM-709516
American Medical Association (AMA)
Mustafa, Hanan Jamil& Mahdi, Abd al-Hamid Rahim. Preparation and characterization of γ-Al2O3 Al composite. Iraqi Journal of Science. 2016. Vol. 57, no. 3B, pp.1959-1967.
https://search.emarefa.net/detail/BIM-709516
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-709516