Titanium boride equation of state determined by in-situ X-ray diffraction. Issue 12 (December 2016)

• Record Type: Journal Article
• Authors: Ono, Shigeaki; Kikegawa, Takumi
• Is Part Of: Heliyon. Volume 2:Issue 12(2016)
• Publication Date: 2016-12
• Subjects: Materials Science -- Condensed Matter Physics; Research -- Periodicals; Medical sciences -- Periodicals; Natural history -- Periodicals; Social sciences -- Periodicals; Earth sciences -- Periodicals; Physical sciences -- Periodicals; 507.2
• DOI: 10.1016/j.heliyon.2016.e00220
• Languages: English
• ISSNs: 2405-8440

Abstract

Abstract: The equation of state (EOS) of titanium boride, TiB2, was investigated by in situ X-ray diffraction in a diamond anvil cell and multianvil high-pressure apparatus. The pressure-volume-temperature ( P-V-T ) data were collected at up to 111 GPa and room temperature for the diamond-anvil cell experiments and at up to 15 GPa and 1300 K for the multianvil experiments. No phase transition was observed through the entire range of experimental conditions. The pressure-volume data at room temperature were fitted using a Vinet EOS to obtain the isothermal bulk modulus, BT0 = 256.7 GPa, and its pressure derivative, B ' T0 = 3.83. When fitting a thermal EOS using the P-V-T data for the multianvil experiments, we find that ( ∂ B T / ∂ T ) V = 0.095 (GPa/K) and α 0 = 2.49 × 10 −5 K −1 .