Chemical synthesis of Ni-Co through hydrazine reduction method

Soft magnetic materials, generally consisting of iron, nickel or cobalt, are used in numerous electrical applications such as transformers and media storage. Recently, machine learning has become a popular research field in research and development. In traditional research methods, high costs, high...

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Main Author: Chung, Clarabelle Pei Ning
Other Authors: Raju V. Ramanujan
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2021
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Online Access:https://hdl.handle.net/10356/147656
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Institution: Nanyang Technological University
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spelling sg-ntu-dr.10356-1476562023-03-04T15:47:43Z Chemical synthesis of Ni-Co through hydrazine reduction method Chung, Clarabelle Pei Ning Raju V. Ramanujan School of Materials Science and Engineering Ramanujan@ntu.edu.sg Engineering::Materials Soft magnetic materials, generally consisting of iron, nickel or cobalt, are used in numerous electrical applications such as transformers and media storage. Recently, machine learning has become a popular research field in research and development. In traditional research methods, high costs, high manual labor, and enormous amount of time are needed to obtain results and data required for a specific material. With the application of machine learning, fewer experiments will be required as predictions can be made through an algorithm. This shortens the time required to discover new materials and processes, compared to traditional experimental approaches. Within the Iron-Nickel-Cobalt ternary system, there were limited literature available for Nickel-Cobalt. Therefore, in this project, Nickel-Cobalt of various compositions will be studied to understand the physical properties. In this project, hydrazine reduction synthesis is used to produce the various compositions of Nickel-Cobalt. Different compositions of Nickel-Cobalt were analyzed, determining its percentage yield, morphology, crystal structure, hardness, electrical and magnetic properties. The results showed that the percentage yield for all composition variations are close to 100%, except Ni0.1Co0.9 and Ni0.2Co0.8. Nickel-Cobalt can be either face centered cubic with spherical particles, or hexagonal closed packed with dendritic particles. The crystal structure has a correlation and strong impact on the materials’ properties. Face centered cubic structures tend to be ductile, of higher electrical resistivity and have softer magnetic properties. On the other hand, hexagonal close packed ones have higher hardness, lower electrical resistivity, and larger hysteresis loops. Despite the higher coercivity and low yield, compositions with hexagonal closed packed structure has better soft magnetic properties. Further research can be done to lower coercivity values and increase yield percentage. Bachelor of Engineering (Materials Engineering) 2021-04-19T07:16:43Z 2021-04-19T07:16:43Z 2021 Final Year Project (FYP) Chung, C. P. N. (2021). Chemical synthesis of Ni-Co through hydrazine reduction method. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/147656 https://hdl.handle.net/10356/147656 en MSE/20/157 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Materials
spellingShingle Engineering::Materials
Chung, Clarabelle Pei Ning
Chemical synthesis of Ni-Co through hydrazine reduction method
description Soft magnetic materials, generally consisting of iron, nickel or cobalt, are used in numerous electrical applications such as transformers and media storage. Recently, machine learning has become a popular research field in research and development. In traditional research methods, high costs, high manual labor, and enormous amount of time are needed to obtain results and data required for a specific material. With the application of machine learning, fewer experiments will be required as predictions can be made through an algorithm. This shortens the time required to discover new materials and processes, compared to traditional experimental approaches. Within the Iron-Nickel-Cobalt ternary system, there were limited literature available for Nickel-Cobalt. Therefore, in this project, Nickel-Cobalt of various compositions will be studied to understand the physical properties. In this project, hydrazine reduction synthesis is used to produce the various compositions of Nickel-Cobalt. Different compositions of Nickel-Cobalt were analyzed, determining its percentage yield, morphology, crystal structure, hardness, electrical and magnetic properties. The results showed that the percentage yield for all composition variations are close to 100%, except Ni0.1Co0.9 and Ni0.2Co0.8. Nickel-Cobalt can be either face centered cubic with spherical particles, or hexagonal closed packed with dendritic particles. The crystal structure has a correlation and strong impact on the materials’ properties. Face centered cubic structures tend to be ductile, of higher electrical resistivity and have softer magnetic properties. On the other hand, hexagonal close packed ones have higher hardness, lower electrical resistivity, and larger hysteresis loops. Despite the higher coercivity and low yield, compositions with hexagonal closed packed structure has better soft magnetic properties. Further research can be done to lower coercivity values and increase yield percentage.
author2 Raju V. Ramanujan
author_facet Raju V. Ramanujan
Chung, Clarabelle Pei Ning
format Final Year Project
author Chung, Clarabelle Pei Ning
author_sort Chung, Clarabelle Pei Ning
title Chemical synthesis of Ni-Co through hydrazine reduction method
title_short Chemical synthesis of Ni-Co through hydrazine reduction method
title_full Chemical synthesis of Ni-Co through hydrazine reduction method
title_fullStr Chemical synthesis of Ni-Co through hydrazine reduction method
title_full_unstemmed Chemical synthesis of Ni-Co through hydrazine reduction method
title_sort chemical synthesis of ni-co through hydrazine reduction method
publisher Nanyang Technological University
publishDate 2021
url https://hdl.handle.net/10356/147656
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