Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 40, Issue 4, Pages 1111-1118Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2019.11.006
Keywords
titanium diboride; Strong Magnetic Field Alignment (SMFA); Field Assisted Sintering Technology (FAST); texture; anisotropy
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Funding
- Slovak Research and Development Agency [APVV-17-0328]
- MVTS project of SAS UltraCom within the scheme of Support of the Seal of Excellence projects
- Joint Mobility Project within Czech-Slovak scheme for the period 2018-2020 under the ASCR-SAS agreement
- Thousand Talents Program of China
- Sichuan Province
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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.
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