| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1603541 | International Journal of Refractory Metals and Hard Materials | 2012 | 5 Pages |
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.
► Ni-TiN composite coatings were successfully prepared by DC, PC and UPC deposition. ► The diameters of Ni and TiN in the coating are 52.6 and 35.7nm, respectively. ► The import of ultrasonication can improve the compactness of the coating.
