This research focuses on the experimental investigation of nanocrystalline structure formation of Fe72.5Ag2Nb3Si13.5B9 alloys in the amorphous and annealed states. The sample like amorphous ribbon has been prepared by rapid solidification technique and their amorphous nature has been confirmed by X-ray diffraction (XRD). The crystallization behavior and the nanocrystal formation have been studied by Differential Thermal Analysis (DTA) and X-ray diffraction (XRD). The activation energy for crystallization is evaluated by Kissinger’s plot. The ribbon sample has been annealed in a controlled way in the temperature range 550°C to 750°C for 2 hours. DTA runs for the sample show the existence of one exothermic peak for α-Fe(Si) phase. Thermal analysis experiment and from the obtained data activation energy of primary crystallization products α-Fe(Si) phase is 5.78 eV. After annealing the activation energy is found 0.164 eV. In the optimized annealing condition the grain size has been obtained in the range of 50 - 69nm. The peak shift indicates the change of the values of Si-content of nanograins. The activation energy is decreased after proper annealing at various temperatures. The crystallization phases of amorphous Fe72.5Ag2Nb3Si13.5B9 alloy annealed at temperature in the range of 550°C to 750°C for 2 hrs. is α-Fe(Si) phases with average grain size 47 to 69 nm. These facts reveal that heat treatment temperature should be limited only 600°C at grain size 50nm to obtain optimum soft magnetic behavior, From XRD experiment, the crystallization onset temperature for the sample is around 600°C which coincides well with the value obtained DTA.
| Published in | Engineering Physics (Volume 2, Issue 2) |
| DOI | 10.11648/j.ep.20180202.12 |
| Page(s) | 41-47 |
| Creative Commons |
This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited. |
| Copyright |
Copyright © The Author(s), 2018. Published by Science Publishing Group |
Nanocrystals, DTA, XRD, Grain, Annealing
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APA Style
Mohammad Mahmuduzzaman Tawhid, Rabiul Hassan, Shibendra Shekher Sikder, Mohammad Abdul Gafur. (2018). Investigation of the Nanocrystalline Formation with Activation Energy in Fe72.5Ag2Nb3Si13.5B9 Metallic Ribbon Comparing with Fe73.5Ag1Nb3Si13.5B9. Engineering Physics, 2(2), 41-47. https://doi.org/10.11648/j.ep.20180202.12
ACS Style
Mohammad Mahmuduzzaman Tawhid; Rabiul Hassan; Shibendra Shekher Sikder; Mohammad Abdul Gafur. Investigation of the Nanocrystalline Formation with Activation Energy in Fe72.5Ag2Nb3Si13.5B9 Metallic Ribbon Comparing with Fe73.5Ag1Nb3Si13.5B9. Eng. Phys. 2018, 2(2), 41-47. doi: 10.11648/j.ep.20180202.12
AMA Style
Mohammad Mahmuduzzaman Tawhid, Rabiul Hassan, Shibendra Shekher Sikder, Mohammad Abdul Gafur. Investigation of the Nanocrystalline Formation with Activation Energy in Fe72.5Ag2Nb3Si13.5B9 Metallic Ribbon Comparing with Fe73.5Ag1Nb3Si13.5B9. Eng Phys. 2018;2(2):41-47. doi: 10.11648/j.ep.20180202.12
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Download@article{10.11648/j.ep.20180202.12,
author = {Mohammad Mahmuduzzaman Tawhid and Rabiul Hassan and Shibendra Shekher Sikder and Mohammad Abdul Gafur},
title = {Investigation of the Nanocrystalline Formation with Activation Energy in Fe72.5Ag2Nb3Si13.5B9 Metallic Ribbon Comparing with Fe73.5Ag1Nb3Si13.5B9},
journal = {Engineering Physics},
volume = {2},
number = {2},
pages = {41-47},
doi = {10.11648/j.ep.20180202.12},
url = {https://doi.org/10.11648/j.ep.20180202.12},
eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ep.20180202.12},
abstract = {This research focuses on the experimental investigation of nanocrystalline structure formation of Fe72.5Ag2Nb3Si13.5B9 alloys in the amorphous and annealed states. The sample like amorphous ribbon has been prepared by rapid solidification technique and their amorphous nature has been confirmed by X-ray diffraction (XRD). The crystallization behavior and the nanocrystal formation have been studied by Differential Thermal Analysis (DTA) and X-ray diffraction (XRD). The activation energy for crystallization is evaluated by Kissinger’s plot. The ribbon sample has been annealed in a controlled way in the temperature range 550°C to 750°C for 2 hours. DTA runs for the sample show the existence of one exothermic peak for α-Fe(Si) phase. Thermal analysis experiment and from the obtained data activation energy of primary crystallization products α-Fe(Si) phase is 5.78 eV. After annealing the activation energy is found 0.164 eV. In the optimized annealing condition the grain size has been obtained in the range of 50 - 69nm. The peak shift indicates the change of the values of Si-content of nanograins. The activation energy is decreased after proper annealing at various temperatures. The crystallization phases of amorphous Fe72.5Ag2Nb3Si13.5B9 alloy annealed at temperature in the range of 550°C to 750°C for 2 hrs. is α-Fe(Si) phases with average grain size 47 to 69 nm. These facts reveal that heat treatment temperature should be limited only 600°C at grain size 50nm to obtain optimum soft magnetic behavior, From XRD experiment, the crystallization onset temperature for the sample is around 600°C which coincides well with the value obtained DTA.},
year = {2018}
}
TY - JOUR T1 - Investigation of the Nanocrystalline Formation with Activation Energy in Fe72.5Ag2Nb3Si13.5B9 Metallic Ribbon Comparing with Fe73.5Ag1Nb3Si13.5B9 AU - Mohammad Mahmuduzzaman Tawhid AU - Rabiul Hassan AU - Shibendra Shekher Sikder AU - Mohammad Abdul Gafur Y1 - 2018/11/27 PY - 2018 N1 - https://doi.org/10.11648/j.ep.20180202.12 DO - 10.11648/j.ep.20180202.12 T2 - Engineering Physics JF - Engineering Physics JO - Engineering Physics SP - 41 EP - 47 PB - Science Publishing Group SN - 2640-1029 UR - https://doi.org/10.11648/j.ep.20180202.12 AB - This research focuses on the experimental investigation of nanocrystalline structure formation of Fe72.5Ag2Nb3Si13.5B9 alloys in the amorphous and annealed states. The sample like amorphous ribbon has been prepared by rapid solidification technique and their amorphous nature has been confirmed by X-ray diffraction (XRD). The crystallization behavior and the nanocrystal formation have been studied by Differential Thermal Analysis (DTA) and X-ray diffraction (XRD). The activation energy for crystallization is evaluated by Kissinger’s plot. The ribbon sample has been annealed in a controlled way in the temperature range 550°C to 750°C for 2 hours. DTA runs for the sample show the existence of one exothermic peak for α-Fe(Si) phase. Thermal analysis experiment and from the obtained data activation energy of primary crystallization products α-Fe(Si) phase is 5.78 eV. After annealing the activation energy is found 0.164 eV. In the optimized annealing condition the grain size has been obtained in the range of 50 - 69nm. The peak shift indicates the change of the values of Si-content of nanograins. The activation energy is decreased after proper annealing at various temperatures. The crystallization phases of amorphous Fe72.5Ag2Nb3Si13.5B9 alloy annealed at temperature in the range of 550°C to 750°C for 2 hrs. is α-Fe(Si) phases with average grain size 47 to 69 nm. These facts reveal that heat treatment temperature should be limited only 600°C at grain size 50nm to obtain optimum soft magnetic behavior, From XRD experiment, the crystallization onset temperature for the sample is around 600°C which coincides well with the value obtained DTA. VL - 2 IS - 2 ER -
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