{"title":"Role of graphene on thermal properties of Al/MnO2 nano-thermite system","authors":"Karan Roy, Vimal Sharma","doi":"10.1007/s12034-024-03264-7","DOIUrl":null,"url":null,"abstract":"<div><p>MnO<sub>2</sub> nano-powder has a unique thermal decomposition process compared to that of other metal oxides owing to their high diffusive property. Samples of Al/MnO<sub>2</sub>/graphene nano-thermite were synthesized using physical mixing at low temperatures to investigate the thermal properties. Different samples were synthesized by varying the content of graphene and keeping the amounts of Al and MnO<sub>2</sub> fixed in the thermite. The prepared thermite samples are characterized using techniques, namely DSC, TGA, FESEM, EDS, XRD and Raman spectroscopy. This article deals with the study of heat release in Al/MnO<sub>2</sub> nano-thermite samples when reinforced with graphene. The maximum heat release of 1151 J g<sup>–1</sup> is observed for the nano-thermite sample with 2.5 wt% of graphene. This measured value of heat release is approximately 25% of the theoretical value, i.e., 4 kJ g<sup>–1</sup>.</p></div>","PeriodicalId":502,"journal":{"name":"Bulletin of Materials Science","volume":"47 3","pages":""},"PeriodicalIF":1.9000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Bulletin of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s12034-024-03264-7","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
MnO2 nano-powder has a unique thermal decomposition process compared to that of other metal oxides owing to their high diffusive property. Samples of Al/MnO2/graphene nano-thermite were synthesized using physical mixing at low temperatures to investigate the thermal properties. Different samples were synthesized by varying the content of graphene and keeping the amounts of Al and MnO2 fixed in the thermite. The prepared thermite samples are characterized using techniques, namely DSC, TGA, FESEM, EDS, XRD and Raman spectroscopy. This article deals with the study of heat release in Al/MnO2 nano-thermite samples when reinforced with graphene. The maximum heat release of 1151 J g–1 is observed for the nano-thermite sample with 2.5 wt% of graphene. This measured value of heat release is approximately 25% of the theoretical value, i.e., 4 kJ g–1.
期刊介绍：
The Bulletin of Materials Science is a bi-monthly journal being published by the Indian Academy of Sciences in collaboration with the Materials Research Society of India and the Indian National Science Academy. The journal publishes original research articles, review articles and rapid communications in all areas of materials science. The journal also publishes from time to time important Conference Symposia/ Proceedings which are of interest to materials scientists. It has an International Advisory Editorial Board and an Editorial Committee. The Bulletin accords high importance to the quality of articles published and to keep at a minimum the processing time of papers submitted for publication.
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