Surface Tension of Nd-Fe-B and B-Co-Fe Alloys 

The surface tension thermophysical property data is included with the TCS Permanent Magnetic Materials Database (TCPMAG).

Nd-Fe-B

Noguchi et al. [2021Nog] have measured the surface tension of Nd-rich ternary Nd-Fe-B alloys by means of a constrained drop method. The calculations show good agreement with these measurements.

Calculated surface tension of Nd-Fe-B ternary alloy compared with experimental data

Figure 1: Calculated surface tension of Nd-Fe-B ternary alloy compared with experimental data from [2021Nog].

B-Co-Fe

Sidorov et al. [2000Sid] measured the surface tension of B-Co-Fe alloy using the sessile drop method and the magnetic susceptibility. The calculation shows a good agreement with the reported measurements.

Calculated surface tension of B-Co-Fe ternary alloy compared with experimental data

Figure 2: Calculated surface tension of B-Co-Fe ternary alloy compared with experimental data from [2000Sid].

References

[2000Sid] V. E. Sidorov, M. Calvo-Dahlborg, U. Dahlborg, P. S. Popel, S. Chernoborodova, Physical properties of some iron based alloys in liquid and amorphous states. J. Mater. Sci. 35, 2255–2262 (2000).

[2021Nog] D. Noguchi, O. Takeda, H. Zhu, S. Sugimoto, Surface tension measurement of Nd−Fe−B−X melts (X = O, Cu, Ga, In) as simulated substances of Nd-rich phase in Nd magnet. J. Magn. Magn. Mater. 539, 168407 (2021).