Formation of Ni-Ti intermetallics during reactive sintering at 500-650 degrees C

0486479 - FZÚ 2018 RIV CH eng J - Článek v odborném periodiku
Novák, P. - Pokorný, P. - Vojtěch, V. - Knaislová, A. - Školáková, A. - Čapek, J. - Karlík, M. - Kopeček, Jaromír
Formation of Ni-Ti intermetallics during reactive sintering at 500-650 degrees C.
Materials Chemistry and Physics. Roč. 155, Apr (2015), s. 113-121. ISSN 0254-0584. E-ISSN 1879-3312
Grant CEP: GA ČR(CZ) GA14-03044S
Institucionální podpora: RVO:68378271
Klíčová slova: intermetallic compounds * powder metallurgy * electron microscopy * microstructure
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.101, rok: 2015

In this work, the formation of intermetallics in Ni–Ti system by reactive sintering at 500 and 650 °C was studied. Mechanism and kinetics of the reactions leading to Ni–Ti phases were determined by DTA and the application of an experimental model consisted of nickel-plated titanium. It was found that Ti2Ni phase forms already at 500 °C. At 650 °C this phase undergoes a reaction with nickel to NiTi and Ni3Ti. The reactions were determined to be diffusion-controlled. The formation of Ni3Ti contributes to the porosity evolution during reactive sintering production of NiTi alloy.

Trvalý link: http://hdl.handle.net/11104/0281282