A. El-Nikhaily
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A. El-Nikhaily has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
- Ahmed R. S. Essa
Mechanical Department, Faculty of Technology and Education, Suez University, Suez, Egypt
1 shared publication Ayman Elsayed
Central Metallurgical Research and Development Institute Egypt
1 shared publicationF. S. Hamid
Faculty of Technology and Education, Suez University, Suez, Egypt
1 shared publicationFadel Hamid
Mechanical Production Department, Faculty of Technology and education, Suez University
1 shared publicationH. Abd Ellatif
Metallurgical & Material Engineering, Faculty of Petroleum & Mining Engineering, Suez University, Egypt
1 shared publication- Omayma A. El-Kady
Powder Technology Department, Central Metallurgical R&D Institute (CMRDI), Cairo, Egypt
1 shared publication
Latest Publications
- 30 June 2021
- Published by Egyptian Knowledge Bank in International Journal of Materials Technology and Innovation
- Vol. 1 (1) , 18-29
Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique
Al-TiC nanocomposites are prepared by powder metallurgy technique. The effect of milling time and TiC percent on the mechanical properties and microstructure are studied. Nano TiC powders with 5, 10, and 20 wt. % is added to the Al matrix. The mixed powders are mechanically milled by a 35:1 ball to powder ratio and 110 rpm for 6, 12, 24, and 48 hr. milling time (MT). Mixed powders are compacted by a uniaxial press under 600 Mpa and sintered at 600 °C for 1 hr. in a vacuum furnace. According to Archimedes’ principle, the density was estimated, which indicated it is decreasing for 6 hr. milling time, followed by an increase for 12 and 24 hrs., then another decreasing for 48 hrs. The addition of nano TiC increases the density values gradually by increasing its percent. Both the phase composition and microstructure of both composite powders and sintered samples are examined using XRD & FE-SEM, respectively. XRD results indicated forming the aluminum carbide (Al4C3) phase that is formed during the sintering process. The microstructure shows the homogeneous distribution of TiC on the Al matrix and the reduction of Al particle size by increasing both milling time and TiC percent. Hardness, compression strength, and wear resistance are improved by increasing TiC content and MT up to 24 hours. Al-20 wt. % TiC composite with 24 hr. milling time exhibited the highest hardness (196.5667 HV) and the lowest wear rate (0.001 g/min).
- 30 June 2021
- Published by Egyptian Knowledge Bank in International Journal of Materials Technology and Innovation
- Vol. 1 (1) , 18-29
Morphology and Mechanical Properties of Al- TiC Nanocomposite Processed via Ball Milling Technique
Al-TiC nanocomposites are prepared by powder metallurgy technique. The effect of milling time and TiC percent on the mechanical properties and microstructure are studied. Nano TiC powders with 5, 10, and 20 wt. % is added to the Al matrix. The mixed powders are mechanically milled by a 35:1 ball to powder ratio and 110 rpm for 6, 12, 24, and 48 hr. milling time (MT). Mixed powders are compacted by a uniaxial press under 600 Mpa and sintered at 600 °C for 1 hr. in a vacuum furnace. According to Archimedes’ principle, the density was estimated, which indicated it is decreasing for 6 hr. milling time, followed by an increase for 12 and 24 hrs., then another decreasing for 48 hrs. The addition of nano TiC increases the density values gradually by increasing its percent. Both the phase composition and microstructure of both composite powders and sintered samples are examined using XRD & FE-SEM, respectively. XRD results indicated forming the aluminum carbide (Al4C3) phase that is formed during the sintering process. The microstructure shows the homogeneous distribution of TiC on the Al matrix and the reduction of Al particle size by increasing both milling time and TiC percent. Hardness, compression strength, and wear resistance are improved by increasing TiC content and MT up to 24 hours. Al-20 wt. % TiC composite with 24 hr. milling time exhibited the highest hardness (196.5667 HV) and the lowest wear rate (0.001 g/min).
- 23 May 2021
- Published by Egyptian Knowledge Bank in Journal of Petroleum and Mining Engineering
- p. 41-50
Synthesis and Evaluation of Strengthened Copper with 3 wt. % TiC and/ or Al2O3 Prepared By SPS Technique
Cu-(TiC/Al2O3) nanocomposite was synthesized successfully using the powder metallurgy route. The constituents are first ball-milled and then sintered using the spark plasma sintering technique. The tribological and physical properties are investigated. The homogeneity and of ceramics distribution were also evaluated using SEM and XRD. Results showed that TiC and Al2O3 nanoparticles were homogeneously distributed all over the Cu matrix. Copper reinforced with 3 wt.% Al2O3 and hybrid (3 wt. % TiC and Al2O3) had the lowest relative density (95 %). The hybrid (3 wt. % TiC and Al2O3) sample had a higher wear rate value (1.7 * 10-3) at 25 N load, while the sample reinforced with 3 wt.% TiC had the lowest value (0.5 * 10-3) at 25 N load. Cu-Al2O3 exhibited a higher hardness value (149 HV). The highest electrical and thermal conductivities are recorded for the Cu -TiC that were (20.76 MS/m) and (149.03 W/m. k) respectively.
- 23 May 2021
- Published by Egyptian Knowledge Bank in Journal of Petroleum and Mining Engineering
- p. 41-50
Synthesis and Evaluation of Strengthened Copper with 3 wt. % TiC and/ or Al2O3 Prepared By SPS Technique
Cu-(TiC/Al2O3) nanocomposite was synthesized successfully using the powder metallurgy route. The constituents are first ball-milled and then sintered using the spark plasma sintering technique. The tribological and physical properties are investigated. The homogeneity and of ceramics distribution were also evaluated using SEM and XRD. Results showed that TiC and Al2O3 nanoparticles were homogeneously distributed all over the Cu matrix. Copper reinforced with 3 wt.% Al2O3 and hybrid (3 wt. % TiC and Al2O3) had the lowest relative density (95 %). The hybrid (3 wt. % TiC and Al2O3) sample had a higher wear rate value (1.7 * 10-3) at 25 N load, while the sample reinforced with 3 wt.% TiC had the lowest value (0.5 * 10-3) at 25 N load. Cu-Al2O3 exhibited a higher hardness value (149 HV). The highest electrical and thermal conductivities are recorded for the Cu -TiC that were (20.76 MS/m) and (149.03 W/m. k) respectively.