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Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method

Received: 14 August 2017     Accepted: 25 August 2017     Published: 19 September 2017
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Abstract

In this study, effect of wheel cooling on magnetic properties of Nd15Fe77B8 alloy powders produced by melt spinning method has been investigated. The present method includes the cooling of the copper wheel by externally contacting a coolant block which is cooled by internally circulating freon gas. Within this framework, the effect of wheel temperature on the microstructure and magnetic properties of Nd15Fe77B8 powders have been investigated. The temperatures of cooling block and melt spinning wheel were measured as -15°C and -5°C, before experimental run, separately. Produced powders exhibited different morphologies depending on the powder sizes. The smallest size of powders was formed as spherical, ligamental and fiber-like morphologies. As powders get larger, the amount of spherical, ligamental and fiber-like shaped powders decreased and the length of the fibers declined. The microstructural cell sizes for 5 µm and 48 µm size powders were measured as 0.22 µm and 1.23 µm, respectively. The cooling rates of 4 µm, 28 µm and 52 µm sized powders were measured as 5.95 x 106 K/s, 0.85 x 106 K/s and 0.45 x 106 K/s, respectively. The Curie temperature of produced powders was 321.5°C. The coercivity value of melt-spun powders was obtained as 2.842 kOe.

Published in International Journal of Materials Science and Applications (Volume 6, Issue 5)
DOI 10.11648/j.ijmsa.20170605.13
Page(s) 241-249
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), 2017. Published by Science Publishing Group

Keywords

Melt Spinning, Cooled Wheel, Nd15Fe77B8 Magnetic Alloy

References
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    Sultan Öztürk, Kürşat Icin, Bülent Öztürk, Uğur Topal, Hülya Kaftelen Odabaşi. (2017). Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method. International Journal of Materials Science and Applications, 6(5), 241-249. https://doi.org/10.11648/j.ijmsa.20170605.13

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    ACS Style

    Sultan Öztürk; Kürşat Icin; Bülent Öztürk; Uğur Topal; Hülya Kaftelen Odabaşi. Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method. Int. J. Mater. Sci. Appl. 2017, 6(5), 241-249. doi: 10.11648/j.ijmsa.20170605.13

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    AMA Style

    Sultan Öztürk, Kürşat Icin, Bülent Öztürk, Uğur Topal, Hülya Kaftelen Odabaşi. Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method. Int J Mater Sci Appl. 2017;6(5):241-249. doi: 10.11648/j.ijmsa.20170605.13

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  • @article{10.11648/j.ijmsa.20170605.13,
      author = {Sultan Öztürk and Kürşat Icin and Bülent Öztürk and Uğur Topal and Hülya Kaftelen Odabaşi},
      title = {Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method},
      journal = {International Journal of Materials Science and Applications},
      volume = {6},
      number = {5},
      pages = {241-249},
      doi = {10.11648/j.ijmsa.20170605.13},
      url = {https://doi.org/10.11648/j.ijmsa.20170605.13},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijmsa.20170605.13},
      abstract = {In this study, effect of wheel cooling on magnetic properties of Nd15Fe77B8 alloy powders produced by melt spinning method has been investigated. The present method includes the cooling of the copper wheel by externally contacting a coolant block which is cooled by internally circulating freon gas. Within this framework, the effect of wheel temperature on the microstructure and magnetic properties of Nd15Fe77B8 powders have been investigated. The temperatures of cooling block and melt spinning wheel were measured as -15°C and -5°C, before experimental run, separately. Produced powders exhibited different morphologies depending on the powder sizes. The smallest size of powders was formed as spherical, ligamental and fiber-like morphologies. As powders get larger, the amount of spherical, ligamental and fiber-like shaped powders decreased and the length of the fibers declined. The microstructural cell sizes for 5 µm and 48 µm size powders were measured as 0.22 µm and 1.23 µm, respectively. The cooling rates of 4 µm, 28 µm and 52 µm sized powders were measured as 5.95 x 106 K/s, 0.85 x 106 K/s and 0.45 x 106 K/s, respectively. The Curie temperature of produced powders was 321.5°C. The coercivity value of melt-spun powders was obtained as 2.842 kOe.},
     year = {2017}
    }
    

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  • TY  - JOUR
    T1  - Effect of Chill Wheel Cooling on Magnetic Properties of Nd15Fe77B8 Alloy Powders Produced by Melt Spinning Method
    AU  - Sultan Öztürk
    AU  - Kürşat Icin
    AU  - Bülent Öztürk
    AU  - Uğur Topal
    AU  - Hülya Kaftelen Odabaşi
    Y1  - 2017/09/19
    PY  - 2017
    N1  - https://doi.org/10.11648/j.ijmsa.20170605.13
    DO  - 10.11648/j.ijmsa.20170605.13
    T2  - International Journal of Materials Science and Applications
    JF  - International Journal of Materials Science and Applications
    JO  - International Journal of Materials Science and Applications
    SP  - 241
    EP  - 249
    PB  - Science Publishing Group
    SN  - 2327-2643
    UR  - https://doi.org/10.11648/j.ijmsa.20170605.13
    AB  - In this study, effect of wheel cooling on magnetic properties of Nd15Fe77B8 alloy powders produced by melt spinning method has been investigated. The present method includes the cooling of the copper wheel by externally contacting a coolant block which is cooled by internally circulating freon gas. Within this framework, the effect of wheel temperature on the microstructure and magnetic properties of Nd15Fe77B8 powders have been investigated. The temperatures of cooling block and melt spinning wheel were measured as -15°C and -5°C, before experimental run, separately. Produced powders exhibited different morphologies depending on the powder sizes. The smallest size of powders was formed as spherical, ligamental and fiber-like morphologies. As powders get larger, the amount of spherical, ligamental and fiber-like shaped powders decreased and the length of the fibers declined. The microstructural cell sizes for 5 µm and 48 µm size powders were measured as 0.22 µm and 1.23 µm, respectively. The cooling rates of 4 µm, 28 µm and 52 µm sized powders were measured as 5.95 x 106 K/s, 0.85 x 106 K/s and 0.45 x 106 K/s, respectively. The Curie temperature of produced powders was 321.5°C. The coercivity value of melt-spun powders was obtained as 2.842 kOe.
    VL  - 6
    IS  - 5
    ER  - 

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