Tribological behavior of NiTi alloy produced by spark plasma sintering method

0553043 - FZÚ 2022 RIV CH eng J - Journal Article
Samal, Sneha Manjaree - Cibulková, J. - Čtvrtlík, Radim - Tomáštík, Jan - Václavek, Lukáš - Kopeček, Jaromír - Šittner, Petr
Tribological behavior of NiTi alloy produced by spark plasma sintering method.
Coatings. Roč. 11, č. 10 (2021), č. článku 1246. E-ISSN 2079-6412
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA20-14114S; GA TA ČR(CZ) TH04030206; GA TA ČR TN01000038; GA MŠMT LM2018110
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : NiTi alloy * annealing * indentation * wear * scratch test
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.236, year: 2021
Method of publishing: Open access

The tribological behaviors of NiTi alloy produced by the spark plasma sintering (SPS) method before and after annealing were investigated at various loading conditions via indentation, scratch, and wear tests. Indentation tests were performed by a pyramidal Berkovich indenter, while scratch and wear tests were carried out by a diamond Rockwell spherical indenter at room temperature. The annealing of the as-prepared samples was performed at 350, 450, and 550C in the ambient atmosphere. The alloy annealed at 350 C showed a higher hardness compared to the other annealed alloys. The scratch and wear resistance of the annealed sample at 350C showed a better performance in comparison to the other samples under a constant load. The high wear resistance of the annealed NiTi alloy may be attributed to its metastable R-phase.
Permanent Link: http://hdl.handle.net/11104/0328095