On the Structure and Properties of AlMgB14-TiB2 Composites Obtained from SHS Powders by Spark Plasma Sintering

Pavel Nikitin; Ilya Zhukov; Aleksey Matveev; Sergei Sokolov; Mikhail Grigoriev; Alexander Vorozhtsov

doi:10.3390/ma14195521

On the Structure and Properties of AlMgB₁₄-TiB₂ Composites Obtained from SHS Powders by Spark Plasma Sintering

Materials (Basel). 2021 Sep 24;14(19):5521. doi: 10.3390/ma14195521.

Authors

Pavel Nikitin¹, Ilya Zhukov¹, Aleksey Matveev¹, Sergei Sokolov¹, Mikhail Grigoriev¹, Alexander Vorozhtsov¹

Affiliation

¹ Laboratory of Metallurgy Nanotechnologies, National Research Tomsk State University, Lenin Avenue, 36, 634050 Tomsk, Russia.

Abstract

AlMgB₁₄-TiB₂ composite materials were fabricated by self-propagating high-temperature synthesis (SHS) followed by spark plasma sintering of the obtained SHS products. It was found that, during the SHS, the AlMgB₁₄ phase is formed at a donor (Ti + 2B) to acceptor (Al₁₂Mg₁₇-B) mass ratio of 3:7 and 4:6, respectively. The specimen sintered from the SHS powder with the donor:acceptor mass ratio of 5:5 at a temperature of 1470 °C has a uniform skeletal structure. The average hardness of the obtained specimen is 30.1 GPa.

Keywords: AlMgB14; SHS; TiB2; composites; spark plasma sintering; titanium diboride.

Grants and funding

19-79-10042/Russian Science Foundation