Dr. Abdul Wahab Hassan Khuder , Dr. Nasri S. M. Nimer , Bassam Hazim Mohammed
Abstract
In our experimental study, 99% copper with 1% graphite metal matrix composite reinforced with 1, 2, 3, 4 and 5% volume fraction of alumina particulates were prepared by means of powder metallurgy method. Microstructure, hardness, compressive strength and wear resistance of the hybrid composites were evaluated and discussed.
The 900C sintering temperature and 90 minutes holding time are stated experimentally for matrix composites (99% Cu and 1% Gr). The influences of alumina volume fractions on compressive strength and microhardness have the same tendency. The obtained relationship between compressive strength and hardness was linear. The improvements of higher compressive strength, hardness with high wear resistance are obtained at 4% volume fraction of alumina, while the reverse indications of previous results were obtained when the fraction of alumina content increased to 5%.
Publication Date
12/11/2015
Publisher
Journal of Materials and Metallurgical Engineering Research
د.عبدالوهاب حسن خضر | Dr. Abdulwahab Hassan Khuder | 3831