Highly textured and strongly anisotropic TiB2 ceramics prepared using magnetic field alignment (9T)

0524432 - ÚFM 2021 RIV GB eng J - Článek v odborném periodiku
Tatarko, P. - Grasso, S. - Kovalčíková, A. - Medveď, D. - Dlouhý, Ivo - Reece, M.J.
Highly textured and strongly anisotropic TiB2 ceramics prepared using magnetic field alignment (9T).
Journal of the European Ceramic Society. Roč. 40, č. 4 (2020), s. 1111-1118. ISSN 0955-2219. E-ISSN 1873-619X
Institucionální podpora: RVO:68081723
Klíčová slova: titanium diboride * Strong Magnetic Field Alignment (SMFA) * Field Assisted Sintering Technology (FAST) * texture * anisotropy
Obor OECD: Ceramics
Impakt faktor: 5.302, rok: 2020
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S0955221919307514?via%3Dihub

Highly textured TiB2 ceramics were prepared by slip casting an aqueous suspension in a magnetic field of 9 T, followed by sintering using Field Assisted Sintering Technology (FAST). Particle size refinement by ball milling improved both the degree of texturing and densification of the material (RD > 98 %). The sintered material exhibited a Lotgering orientation factor of 0.90, with the c-axis of TiB2 oriented parallel to the magnetic field and FAST pressing direction. The texturing effect induced by the uniaxial pressing was negligible. The textured TiB2 material exhibited a significant anisotropy in mechanical properties, the values of hardness and indentation elastic modulus measured along directions transverse to the c-axis of TiB2 were 37 % and 13 % higher than the ones measured along the c-axis direction. Moreover, the specific wear rate of a surface of textured TiB2 parallel to the field was one order of magnitude lower than a surface perpendicular to the field.
Trvalý link: http://hdl.handle.net/11104/0308819