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

摘要: PVD process as a thin film coating method is highly applicable for both metallic and ceramic materials, which faced with the necessity of choosing correct parameters to achieve optimal results. In present study, GEP-based model first time was proposed safe accurate predict adhesion strength hardness Nb coated aimed at growing mixed oxide nanotubular arrays on Ti67. Here, training testing analysis were executed hardness. The optimum parameter combination scratch micro determined by maximum mean S/N ratio, 350W, 20 sccm, DC bias 90V. Results showed that values calculated in GEP very close actual experiments designed Taguchi. as-sputtered highest microhardness electrochemically anodized 20V 4h. From FESEM images EDS results annealed sample, thick layer bone-like apatite formed sample surface after soaking SBF 10 days, can be connected development ordered nanotube arrays. This novel approach provides an outline future design nanostructured coatings wide range applications.