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Powder Metallurgy and Metal Ceramics

, Volume 57, Issue 7–8, pp 447–457 | Cite as

Wear Characterization of Biomedical Porous Alloy (Ni50–xTi50Cux) at Elevated Temperature

  • N. Sharma
  • K. Kumar
  • G. Singh
  • P. Sharma
SINTERED METALS AND ALLOYS
  • 9 Downloads

In today’s scenario a small amount of wear can change the dimensions of devices, especially in micro-devices. Equiatomic NiTi alloy has its applications in engineering and medical due to shape memory, pseudoelasticity, biocompatibility and corrosion resistance. In the present research copper is mixed at different proportion from 0 to 10% in NiTi alloy to study the wear behavior and its mechanism at different loads and temperature environments (37 to 250°C). The wear results (WC/Ni50–xTi50Cux couple) show that the wear rate increases with increasing load and temperature. After a certain temperature the wear rate decreases due to formation of mechanically mixed layer. Microhardness of NiTi alloy also increases after increasing copper contents. X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDS) and scanning electron microscopy (SEM) techniques were used to check the phases of wear pins and WC disk. Ni40Ti50Cu10 pin was suggested for the biomedical application due to its low wear rate; the same surface was evaluated at different load to study the wear mechanisms. Defragmented particles were studied to investigate the morphology of debris at different loads. XRD analysis reveals that with the addition of copper content in NiTi alloy, the wear resistance increases due to intermediate phase TiNi0.8Cu0.2 matrix

Keywords

microhardness NiTi NiTiCu wear characteristics 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringMaharishi Markandeshwar (Deemed to be University)MullanaIndia
  2. 2.Department of Mechanical EngineeringPunjab Engineering College (Deemed to be University)ChandigarhIndia
  3. 3.Amity Institute of TechnologyAmity UniversityNoidaIndia
  4. 4.Department of Mechanical EngineeringPanipat Institute of Engineering and TechnologySamalakhaIndia

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