An Investigation on TiNi Intermetallic Produced by Electric Current Activated Sintering

• Authors: N. Ergin , O. Ozdemir
• Languages of publication: EN

Abstracts

EN

In this study, TiNi intermetallic compounds were produced by electric current activated sintering in open air under an uniaxial pressure of 200 MPa at a maximum of 1200 A for 10 min using Ni powder (99.8% purity, 4-7 μm), Ti powder (99.5% purity, less than 44 μm). The elemental powders were mixed in the stoichiometric ratio corresponding to the TiNi intermetallic at molar proportion of 1:1. Scanning electron microscopy and X-ray diffraction analysis were used to characterize produced samples. X-ray diffraction studies revealed that the dominant phases are TiNi, NiTi_2, Ni_3Ti, TiO, and Ni_2Ti_3. Scanning electron microscopy examinations showed a dense microstructure with very low amount of porosity. The relative density of test materials measured according to Archimedes' principle was 96.8%, and the microhardness of materials was about 773.6 ± 123 HV_{0.05}.

Keywords

EN

81.20.Ev; 81.40.Pq

Discipline

• 81.40.Pq: Friction, lubrication, and wear
• 81.20.Ev: Powder processing: powder metallurgy, compaction, sintering, mechanical alloying, and granulation

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2013
• Volume: 123
• Issue: 2
• Pages: 248-249

Dates

published

2013-02

Contributors

author

N. Ergin

• Technology Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

author

O. Ozdemir

• Technology Faculty, Department of Metallurgy and Materials Engineering, Sakarya University, Esentepe Campus, 54187 Sakarya, Turkey

References

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Identifiers

DOI

10.12693/APhysPolA.123.248