Multilayer TiN/TiCN/TiCN/TiC/TiN and TiN/TiCN/TiCN/TiC/Al₂O₃ hard coatings with total thicknesses of 15.7 μm and 9.3 μm were deposited on WC-10Co substrates using a chemical vapor deposition system. Evaluation of surface, cross-section morphologies, chemical composition and phases of coatings were analyzed by field emission scanning electron microscopy (FESEM), energy dispersive spectrometry (EDS) and X-ray diffraction (XRD) analyses respectively. Corrosion properties were evaluated in 3.5 wt% NaCl medium using potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Tribological properties of fabricated multilayer hard coatings were evaluated using pin-on-disk tests. Results show that active dissolution of the WC-10Co occurred while the coated samples showed more anodic slopes as well as lower corrosion current densities. The corrosion current densities of 3.3 × 10⁻⁷ A/cm² and 7.5 × 10⁻⁸ A/cm² were obtained for the TiN/TiCN/TiCN/TiC/TiN and TiN/TiCN/TiCN/TiC/Al₂O₃ coated specimens which are much lower than 4 × 10⁻⁶ A/cm² of substrate. EIS analysis confirmed the results of potentiodynamic polarization curves. Delamination of the TiN coating and formation of titanium oxide compounds on the surface of the TiN/TiCN/TiCN/TiC/TiN coating revealed that oxidative wear mechanism is dominant for this sample, while adhesive wear mechanism was dominant for the TiN/TiCN/TiCN/TiC/Al₂O₃ coated sample.

多层TiN / Ti C N / TiC N / TiC / TiN和TiN / Ti C N / TiC N / TiC / Al ₂ O ₃使用化学气相沉积系统将总厚度分别为15.7μm和9.3μm的硬质涂层沉积在WC-10Co基底上。分别通过场发射扫描电子显微镜（FESEM），能谱仪（EDS）和X射线衍射（XRD）分析来评估涂层的表面，截面形态，化学成分和相。使用电位动力学极化和电化学阻抗谱（EIS）在3.5 wt％NaCl介质中评估腐蚀性能。使用针盘试验评估了制成的多层硬质涂层的摩擦学性能。结果表明，WC-10Co发生了主动溶解，而涂层样品显示出更大的阳极斜率和更低的腐蚀电流密度。腐蚀电流密度为3.3×10对于TiN / Ti C N / TiC N / TiC / TiN和TiN / Ti C N / TiC N / TiC / Al ₂ O ₃涂层样品，获得了^-7  A / cm ²和7.5×10 ^-8  A / cm ²远低于基板的4×10 ^-6  A / cm ²。EIS分析证实了电位动力学极化曲线的结果。TiN涂层分层并在TiN / Ti C N / TiC N表面上形成氧化钛化合物/ TiC / TiN涂层显示该样品占主导地位的是氧化磨损机理，而TiN / Ti C N / TiC N / TiC / Al ₂ O ₃涂层样品占主导地位的是粘合剂磨损机理。