Structure and properties of TiC/Ti coatings fabricated on NiTi by plasma immersion ion implantation and deposition |
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| Affiliation: | 1. Department of Physics & Materials Science, City University of Hong Kong, Tat Chee Avenue, Kowloon, Hong Kong, China;2. Materials Engineering Department, Faculty of Engineering, Malayer University, P.O. Box 95863-65719, Malayer, Iran;1. Univ. Grenoble Alpes, F-38000 Grenoble, France;2. CEA, LETI, MINATEC Campus, F-38054 Grenoble, France;3. Univ. Grenoble Alpes, LTM, CNRS, F-38000 Grenoble, France;1. Department of Mineral Processing Engineering, Shahid Bahonar University of Kerman, Kerman, Iran;2. Department of Materials Science and Engineering, Shahid Bahonar University of Kerman, Kerman, Iran;1. Materials Research Group, Faculty of Engineering and the Environment, University of Southampton, Southampton SO17 1BJ, UK;2. Department of Control Engineering, Faculty of Electrical Engineering, Czech Technical University in Prague, Technická 2, Prague 6, Czech Republic;3. SEG-CEMUC – Department of Mechanical Engineering, University of Coimbra, Rua Luís Reis Santos, P-3030 788 Coimbra, Portugal;4. Delft University of Technology, Kavli Institute of Nanoscience, National Center for HREM, Lorentzweg 1, 2628CJ Delft, The Netherlands;1. State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi''an Jiaotong University, Xi''an 710049, Shaanxi, China;2. School of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, Henan, China;3. Collaborative Innovation Center of Nonferrous Metals, Henan University of Science and Technology, Luoyang 471023, Henan, China;4. School of Materials Science and Engineering, Central South University, Changsha 410083, Hunan, China;1. Institute of New Energy Science and Technology of Hebei North University, Zhangjiakou 075000, China;2. College of Sciences, Agriculture University of Hebei, Baoding 071001, China |
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| Abstract: | A titanium carbide (TiC) nanostructured coating and Ti intermediate layer are fabricated on NiTi by plasma immersion ion implantation and deposition (PIII&D) to improve the surface properties. The chemical composition and structure are determined by X-ray diffraction, Auger electron spectroscopy, scanning electron microscopy, and atomic force microscopy. Nano-indentation is used to evaluate the mechanical properties of the thin film and the biological characteristics are assessed by electrochemical measurement and soaking tests in simulated body fluids. Based on the potentiodynamic polarization and Ni release data after the polarization test, the Ti/TiC nanostructure coating has better corrosion resistance compared to the NiTi substrate and there is significantly less Ni ion release from the NiTi substrate into the simulated body fluids than the uncoated NiTi alloy. |
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