1. Formation of Ni–Ti intermetallics during reactive sintering at 500–650 °C.
- Author
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Novák, Pavel, Pokorný, Petr, Vojtěch, Vladimír, Knaislová, Anna, Školáková, Andrea, Čapek, Jaroslav, Karlík, Miroslav, and Kopeček, Jaromír
- Subjects
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NICKEL-titanium-carbon alloys , *SINTERING , *CHEMICAL kinetics , *NICKEL-plating , *MICROSTRUCTURE , *ELECTRON microscopy - Abstract
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 Ti 2 Ni phase forms already at 500 °C. At 650 °C this phase undergoes a reaction with nickel to NiTi and Ni 3 Ti. The reactions were determined to be diffusion-controlled. The formation of Ni 3 Ti contributes to the porosity evolution during reactive sintering production of NiTi alloy. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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