The equation of state and the shear modulus data of sintered Nd2Fe14B were investigated up to
140 GPa by the Gruneisen’s model, the volume superposition principle and the Hugoniot’s relations.
Then, the results were compared to the prior experiments with a standard deviation of
0.125% from 18 GPa to 78 GP; and then, the loading pressure was extended to higher. Meanwhile,
the softening feature has not been observed both in adiabat and shear modulus throughout the
interested range.
References
[1]
Yang, H.F. (2005) The Present Situation of and Existing Problems in the Development of Chinese Permanent-Magnet Material Nd-Fe-B. Science and Technology Information of Development and Economy, 15, 126-129.
[2]
Shkuratov, S.I., Talantsev, E.F., Dickens, J.C. and Kristiansen, M. (2003) Currents Produced by Explosive Driven Transverse Shock Wave Ferromagnetic Source of Primary Power in Coaxial Single Turn Seeding Coil of a Magnetocumulative Generator. Journal of Applied Physics, 93, 4529-4535. http://dx.doi.org/10.1063/1.1558968
[3]
Li, Q.Y., Shi, S.C., Yang, J.W. and Sun, Y. (2007) Shock Compression Behavior of Nd2Fe14B. Chinese Journal of High Pressure Physics, 21, 210-214.
[4]
Zh, D.H., Kim, H.J., Li, W. and Koh, C.S. (2013) Analysis of Magnetizing Process of a New Anisotropic Bonded NdFeB Permanent Magnet Using FEM Combined with Jiles-Atherton Hysteresis Model. IEEE Transactions on Magnetics, 49, 2221-2224. http://dx.doi.org/10.1109/TMAG.2013.2245499
[5]
Rabchuk, J. (2003) The Gauss Rifle and Magnetic Energy. The Physics Teacher, 41,158-161. http://dx.doi.org/10.1119/1.1557504
[6]
Jing, F.Q. (1999) Introduction to Experimental Equation of State. Science Press, Beijing, 25-29.
[7]
Li, A.H., Dong, S.G. and Li, W. (2003) Anisotropy of Mechanical Properties and Fracture Behaviour in Sintered NdFeB Permanent Magnetic Materials. Rare Metal Materials and Engineering, 32, 631-634.
