Preparation and corrosion behavior of electrodeposited Ni–TiN composite coatings |
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| Affiliation: | 1. School of Mechanical Science and Engineering, Northeast Petroleum University, Daqing 163318, PR China;2. School of Electronics Science, Northeast Petroleum University, Daqing 163318, PR China;3. No.4 oil production plant, Petrochina Daqing Oilfield, Daqing, 163000, PR China;1. Hunan Provincial Key Laboratory of Thin Film Materials and Devices, School of Materials Science and Engineering, Xiangtan University, Xiangtan 411105, China;2. Faculty of Science, Charles University in Prague, 128 43 Prague 2, Czech Republic;1. Government Engineering College, Haveri 581110, Karnataka, India;2. Indian Institute of Information Technology, Dharwad, IT Park, Hubballi, Karnataka, India;3. University BDT College of Engineering, Davanagere, Karnataka, India;1. Composite Materials & Technology Center, Malek Ashtar University of Technology (MUT), Tehran, Iran;2. Department of Materials Engineering, Imam Khomeini International University (IKIU), Qazvin, Iran;3. University Complex of Material and Manufacturing Malek Ashtar University of Technology (MUT), Tehran, Iran;4. Department of Ceramic, Shahreza Branch, Islamic Azad University, Shahreza, Iran;5. Islamic Azad University, West Tehran Branch (WTIAU), Tehran, Iran |
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| Abstract: | Ni–TiN composite coatings were successfully prepared by direct current (DC), pulse current (PC) and ultrasonic pulse current (UPC) deposition methods. The morphology, mechanical properties and the corrosion behavior of Ni–TiN composite coatings were investigated using atomic force microscope (AFM), scanning electronic microscope (SEM), X-ray diffraction (XRD) and gravimetric analysis. The results show that the Ni–TiN composite coatings synthesized by UPC deposition method possess a compact and exiguous surface morphology. The XRD results demonstrate that the average grain diameter of Ni and TiN in composite coating prepared by UPC deposition is 52.6 and 35.7 nm, respectively. In the corrosion tests, the coating prepared by UPC deposition exhibits the best corrosion resistance, whereas the coating fabricated by DC deposition suffers the most serious damage. |
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