Late News Poster Session: On-Demand Poster Session: Materials Processing
Program Organizers: TMS Administration
Monday 8:00 AM
March 14, 2022
Room: Materials Processing
Location: On-Demand Poster Hall
A Novel Electrolytic Process for the Production of Cu Metal from Chalcocite in CuCl – KCl Molten Salt at 473 K: Tae-Hyuk Lee1; Jungshin Kang1; 1KIGAM
The commercial copper (Cu) production process has environmental concerns such as the generation of a large amount of sulfur dioxide (SO2) gas. To overcome such issues, a novel Cu production process by utilizing the electrolytic method was investigated to produce Cu metal and elemental sulfur (S2) from chalcocite (Cu2S). The electrolysis of Cu2S in eutectic copper chloride (CuCl) – potassium chloride (KCl) molten salt was carried out with a current density of 10 – 40 mA/cm2 at 473 K for 1.5 – 24 h. In the experiments, the average cell voltage measured was in the range of 0.51 – 0.66 V, and Cu metal with a purity of 99.92 % was obtained with a current efficiency of 96.1 % under certain conditions. Therefore, the developed electrolytic process is feasible for efficient and eco-friendly Cu metal production from Cu2S.
Manufacturing of Bulk Nanocrystalline Al-Mg Alloys Using High-pressure Cold Spray Technique for High-strength Lightweight Applications: Amanendra Kushwaha1; Manoranjan Misra1; Pradeep Menezes1; 1University of Nevada, Reno
The present work focuses on manufacturing bulk nanocrystalline Al-Mg alloys using cryomilling and high-pressure cold spray (HPCS) techniques. The Al and 5 wt. % Mg powders were pre-mixed and cryomilled for 2, 4, 6, and 8 hours. The HPCS technique was utilized to deposit cryomilled powder onto the Al substrate. After deposition, the thick deposited layer was extracted from the Al substrate, resulting in a standalone component. The morphology and crystallite size of both cryomilled powder and HPCS components were studied using scanning electron microscopy, X-ray diffraction, and transmission electron microscopy. The results showed that the crystallite size of the powder was reduced with the increased cryomilling time and was retained in the component after HPCS deposition. In addition, HPCS components showed enhanced mechanical properties, compared to traditional Al alloys. The manufactured alloy component has the potential to be used in automotive, aerospace, and marine sectors for high-strength lightweight applications.