Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Aluminum Matrix Composite

Preparation of Aluminum Matrix Composite Reinforced with Alumina Particles by In- Situe Method

Yasir Muhi Abdualsahib; Maryam Abdul Adheem Baqer; Ahmed Flayyih Hussein

Engineering and Technology Journal, 2013, Volume 31, Issue 13, Pages 2561-2571

In this work an Aluminum matrix composite reinforced with alumina prepared by insitu
(liquid-gas) method were investigated. Gas was represented by an oxygen with flow
rate 50, 100, and 150 Sml/min (Standard mile Liter/minute) at different temperature
(720, 740, 760 and 780 °C). The effects of reaction temperature on alumina particle size
and alumina volume fraction were studied extensively. Resulted alumina was identified
by using XRD and SEM techniques. The resulted composites were characterized using
density and hardness tests. It is found generally, that the alumina particle size was (3 ± 1
μm), the density and hardness are decreases as the alumina particles weight percent
increases. The reason behind such behavior was the increment in porosity around alumina
particles and also to the weakness in wettability between alumina and metal matrix.
Furthermore, it is noted that, there are many problems need to be resolved like
segregation, agglomeration and weak of wettability are occurred between the particles
surface and matrix.

Studying Some Mechanical Properties and Wear Resistance of Aluminum - Glass Composites

Engineering and Technology Journal, 2010, Volume 28, Issue 21, Pages 1030-1039

The research is aimed to prepare an aluminum matrix reinforced with window glass particles with weight percentages of (1%,2%,3%,5% and 7%) ,with particle sizes varies from 75-150μm. Composite materials are prepared by using mechanical stir- casting method. The formation of vortex in aluminum melt helps dispersion of glass particles in aluminum melt . Electroless copper coating on glass particles is carried out to improve wetability between glass particles and aluminium melt. Many inspections and tests have been done such as microstructure, hardness inspection, compression test and dry sliding wear test type Pin-on Disk with different loads and at a constant speed and sliding distance
It was found that addition of glass particles coated with copper to pure aluminum increases hardness , compression strength and wear resistance .