X-ray diffractometry and mathematical processing of diffraction patterns by the A. N. Tikhonov regularization method, which enhances the resolution, are used to study the kinetics of formation of phases in the forward reaction of the HDDR process in its early stages (the first minutes) in alloys based on Nd – Fe – Co – B – Zr.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
H. Yamomoto, S. Hirosawa, S. Fujimura, et al., “Metallographic study on Nd – Fe – Co – B sintered magnets,” J. IEEE Trans. Magn., 23(5), 2100 – 2104 (1987).
P. P. Pashkov, D. V. Pokrovskii, and A. A. Fridman, “Phase diagram of the Fe – Nb – B system and special features of the structure of its alloys,” in: IV All-Russia Conf. on Permanent Magnets, Suzdal, 20 – 23 September, 1988, Abstracts [in Russian], Infelektro, Moscow (1988), pp. 93 – 120.
T. Takeshita and R. Nakayama, in: Proc. 11th Int. Workshop on Rare-Earth Magnets and Their Applications, Carnegie-Mellon University, Pittsburgh (1990), pp. 49 – 59.
H. Nakamura, R. Suefuji, S. Sujimoto, et al., “Effects of HDDR treatment conditions on magnetic properties of Nd – Fe – B anisotropic powders,” J. Appl. Phys., 76(10), 682 – 686 (1994).
V. V. Kotunov and D. A. Shumakov, “Highly anisotropic powders of alloys of the Nd – Fe – B system with magnetic energy up to 27 MGOe obtained by the method of hydrogenationdehydrogenation,” Metalloved. Term. Obrab. Met., No. 4, 30 – 33 (2005).
R. S. Sheridan, R. Sillitoe, M. Zakotnik, et al. “Anisotropic powder from sintered NdFeB magnets by the HDDR processing route,” School Metall. Mater. University of Birmingham, J. Magn. Magn. Mater., 324(1), 63 – 67 (2012).
P. M. Ahmed and I. R. Harris, “Improvement of microstructure and magnetic properties of Nd – Fe – B alloys by Nd and Co additions,” School Metall. Mater. University of Birmingham, J. Magn. Magn. Mater., 320(21), 2808 – 2813 (2008).
B. E. Vintaikin and R. N. Kuz’min, “Discrimination of instrumental broadening and the Kα2 component and Kα -doublet in two-dimensional maps of distribution of intensity of x-ray scattering by direct variational computer procedures,” Kristallografiya, 31(4), 656 – 660 (1976).
B. E. Vintaikin and A. A. Loboiko, “Structural states in Fe – Nd – B-base alloys during HDDR process,” Fund. Probl. Radio-Elektr. Priborostr., 13, 141 – 142 (2013).
M. Xing, J. Han, Z. Lin, et al., “Anisotropic ternary Ce13Fe80B7 powders prepared by hydrogenation-disproportionation-desorption- recombination process and the diffusion of Ce – Cu eutectic alloys,” J. Magn. Magn. Mater., 331, 140 – 145 (2013).
R.-C. He, F.-L. Wang, and J.-F. Hu, “Magnetic moment angle error and alignment degree of sintered Nd – Fe – B magnet. Gongneng Cailiao,” J. Funct. Mater., 43(20), 2863 – 2866 (2012).
Y. Ma, D. Chen, A. Zhou, et al., “Enhanced alignment and magnetic properties of die-upset nano-crystal Nd2Fe14B magnets with Nb addition,” Phys. B, Condensed Matter, 407(23), 4562 – 4566 (2012).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 11, pp. 36 – 38, November, 2019.
Rights and permissions
About this article
Cite this article
Vintaikin, B.E., Boruta, V.S. & Litvinov, O.S. Special Features of Formation of Phase State in Nd – Fe – Co – B – Zr-Base Alloys in Early Stages of the HDDR Process. Met Sci Heat Treat 61, 709–711 (2020). https://doi.org/10.1007/s11041-020-00487-3
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11041-020-00487-3