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S. Lavrynenko, E. Gevorkyan, W. Kucharczyk, L. Chalko and M. Rucki

two types of Al2O3/TiC ceramic cutting tool material at room and elevated temperatures. Ceramics International, 43 (2017) 13869-13874. 10. Basu B., Lee J.H., Kim D.Y.: Development of WC-ZrO 2 nanocomposites by spark plasma sintering. J. Am. Ceram. Soc., 87(2) (2004) 317–319. 11. Malek O., Lauwers B., Perez Y., Baets P., Vleugels J.: Processing of ultrafine ZrO 2 toughened WC composites. J. Eur. Ceram. Soc., 29(16) (2009) 3371–3378. 12. Pedzich Z., Haberko K., Piekarczyk J., Faryna M., Litynska L.: Zirconia matrix-tungsten carbide particulate

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S. Sobieszczyk

-filled pores. J. Mater. Res., 16 (2001) 1508-1539. Li J. P., Li S. H., Van Blitterswijk C. A., De Groot K.: A novel porous Ti 6 Al 4 V: characterization and cell attachment. J. Biomed. Mater. Res., 73A (2005), 223-233. Miyao R., Omori M., Watari F., Yokoyama A., Matsumo H., Hirai T., Kawasaki T.: Fabrication of functionally graded implants by spark plasma sintering and their properties. J. Japan Soc. Powder Metall., 47 (2000), 1239-1242. Groza J. R., Zavaliangos A.: Sintering activation by external

Open access

Yuqi Chen, Liang Li and Shinji Hirai

Abstract

Single-phase Eu3S4 was obtained via CS2 gas sulfurization of Eu2O3 nanospheres at 773 K for longer than 0.5 h. The primary particle size of Eu3S4 became larger than that of Eu2O3 during the sulfurization process. Pure synthetic Eu3S4 powders were unstable and transformed to EuS at 873 K under vacuum. Eu3S4 compacts were sintered in temperature range of 773 K to 1173 K and they transformed to EuS at 1473 K during spark plasma sintering. Specific heat of sintered Eu3S4 did not show an anomalous behavior in the range of 2 K to 50 K. The magnetic susceptibility of polycrystalline Eu3S4 followed a Curie-Weiss law from 2 K to 300 K. Magnetization of polycrystalline Eu3S4 was larger than that of single crystal Eu3S4 when the magnetic field was less than 3.5 kOe.