https://scholars.lib.ntu.edu.tw/handle/123456789/598375
標題: | Effects of ball milling and additives (activated carbon and copper) on hydrogen absorption characteristics of ZK60 alloy | 作者: | Abbas A Hu K.-C Lin H.-C Lin K.-M. HSIN-CHIH LIN |
關鍵字: | Ball milling;Differential scanning calorimetry;Hydrogen absorption capacity;Hydrogen storage materials;ZK60-Activated carbon-copper alloy;Activated carbon;Additives;Binary alloys;Copper;Hydrogen storage;Magnesium alloys;Milling (machining);Zinc alloys;Absorption characteristics;Endothermic peaks;Hydrogen absorption;Milling time;Scanning calorimetry;Weight percentages;ZK60 alloy;Zk60-activated carbon-copper alloy;Copper alloys | 公開日期: | 2021 | 卷: | 271 | 來源出版物: | Materials Chemistry and Physics | 摘要: | Zk60 commercial magnesium alloy was used as hydrogen storage materials to investigate the effects of milling time and different weight percentages of additives (activated carbon, copper) on hydrogen absorption characteristics. The mechanically removed chips of ZK60 were blended with additives for different hours using high energy ball milling. The rate of hydrogenation was calculated by Sievert's apparatus at different temperatures for five cycles. The hydrogen absorption was found maximum (4.2 wt%) at 350 °C for 15 h of ball milling in monolithic ZK60. The addition of 5 wt% activated carbon enhances the hydrogen absorption capacity to 7 wt% at the sorption temperature of 300 °C. The addition of copper has reduced the absorption kinetics and increased the hydrogen capacity to 4.5 wt% at 350 °C. The addition of 5 wt% activated carbon has less endothermic peak (379 °C) than that of ZK60 with 5 wt% copper, which has an endothermic peak of 405 °C. The microstructural observations indicate that ball milling has reduced the grain size to 22 nm after 20hr of milling time. The addition of copper has produced new phases (CuMg2 and CuMgZn). ? 2021 Elsevier B.V. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85110067784&doi=10.1016%2fj.matchemphys.2021.124950&partnerID=40&md5=b9404b3bc528c8573c1e313b8f3c2572 https://scholars.lib.ntu.edu.tw/handle/123456789/598375 |
ISSN: | 02540584 | DOI: | 10.1016/j.matchemphys.2021.124950 |
顯示於: | 材料科學與工程學系 |
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