1. Central Metallurgical Research and Development Institute (CMRDI)
2. P.O. Box 87, Helwan
3. Cairo 11421
4. Egypt
5. BCMaterials
6. Ultrasonic laboratory
7. National Institute of Standards
8. Giza
9. Faculty of nanotechnology for postgraduate studies
10. Department of Physics
11. Faculty of Science, Suez University, Suez, 43518
12. Academy of Scientific Research and Technology (ASRT) of the Arab Republic of Egypt
13. Cairo
14. Cairo University
15. El-Sheikh Zayed 12588