GEP-based method to formulate adhesion strength and hardness of Nb PVD coated on Ti-6Al-7Nb aimed at developing mixed oxide nanotubular arrays

- A GEP model was developed to formulate adhesion strength and hardness of Nb PVD coated on Ti67.
- Values in the training and testing were very close to the actual experiments designed by Taguchi.
- A homogenous and high-purity structure was achieved after annealing at 440 °C for 30 min.
- A bone-like apatite layer was formed after soaking in SBF for 10 days.