Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route
Zidan, H., Hilal, N., elgammal, M., mohammed, G., osama, A., El-kady, O. (2024). Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route. EKB Journal Management System, 3(2), 416-424. doi: 10.21608/ijtar.2024.298408.1077
Hadier Mohammed Zidan; Nora Hilal; mona elgammal; gehade mohammed; ahmed osama; omyma El-kady. "Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route". EKB Journal Management System, 3, 2, 2024, 416-424. doi: 10.21608/ijtar.2024.298408.1077
Zidan, H., Hilal, N., elgammal, M., mohammed, G., osama, A., El-kady, O. (2024). 'Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route', EKB Journal Management System, 3(2), pp. 416-424. doi: 10.21608/ijtar.2024.298408.1077
Zidan, H., Hilal, N., elgammal, M., mohammed, G., osama, A., El-kady, O. Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route. EKB Journal Management System, 2024; 3(2): 416-424. doi: 10.21608/ijtar.2024.298408.1077

Recycling Tungsten Heavy Alloy Scrap via Ultrasonic Waves to form new ones by Powder Metallurgy Route

International Journal of Theoretical and Applied Research
Article 2, Volume 3, Issue 2, December 2024, Page 416-424  XML PDF (911.94 K)
Document Type: Original Article
DOI: 10.21608/ijtar.2024.298408.1077
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Authors
Hadier Mohammed Zidan email orcid 1; Nora Hilal2; mona elgammal3; gehade mohammed4; ahmed osama5; omyma El-kady6
1powder technology department in central metallurgy research and development institute
2Chemistry Departmet, faculty of Science, Al-Azhar University (GIrls Branch)
3Department of Chemistry, Faculty of Science, Al Azhar University (Girls), Cairo, Egypt
4Ultrasonic Metrology Department, National Institute of Standards, Giza, Egypt
5Powder Technology Division, Central Metallurgical R&D Institute (CMRDI), Egypt
6Powder Technology Division, Central Metallurgical R&D Institute (CMRDI), Egypt.
Abstract
Abstract
Ultrasonic waves with a frequency of 25 KHz were used to enhance the acidic chemical recycling of tungsten heavy alloy (WHA) scrap class 2 HA175 with a typical composition of Ni-5.25 wt%, Fe-2.25 wt%, and W-92.5 wt% to recover the tungsten powder. The experiment demonstrated that the scrap sample exposed to ultrasonic waves produced a significantly higher amount of tungsten powder with a submicron particle size. The recycled tungsten powder was utilized to manufacture a new tungsten heavy alloy sample class 2 HA175 with the same alloy composition as the above. The elemental powders were mixed mechanically, cold compacted, and sintered at 1500◦C in a vacuum furnace. The microstructure, phase structure, and composition of the sintered WHAs were investigated by Scanning Electron Microscopy (SEM) and X-ray diffractometer (XRD). The recycled sample's density and hardness were higher than the original, in which the hardness increased from 312 to 340 HV, whereas the wear rate and coefficient of friction were decreased by about 50%. The longitudinal (VL) and shear (VS) velocities for both samples were examined using ultrasonic (NDT).
Keywords
Keywords: Recycling; Sonochemistry; Tungsten heavy alloy; Powder metallurgy; Ultrasonic Non-destructive test
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