Study on Adhesion Strength of Tin Coated Biomedical Ti-13zr-13nb Alloy

Abstract

One of the crucial factors which determine the success of coated implantation and stability in the long run is the strength of adhesion between the coating and substrate. After implantation, a weakly adhered coating may delaminate and this might seriously restrict the implant’s effectiveness and longevity. Based on past studies, the quality of TiN coating is directly influenced by the process parameters. The objective of this research is to evaluate the effect of N2 gas flow rate on adhesion strength of biomedical grade Ti-13Zr-13Nb alloy. In this research, N2 gas flow rate of 100, 200 and 300 sccm were varied while the other parameters (substrate temperature and bias voltage) were fixed. The scratch testing method was used to examine the adhesion strength of the TiN coating. This research used the calibrated optical images to verify the total coating failures on the scratched coated samples. The results indicated that the micro droplet form on the TiN coating decreases as the flow rate of the N2 gas increases. In contrast, the TiN coating’s adhesion strength increases with the increase of N2 gas flow rate. It can be concluded that N2 gas flow rate was significant factor in improving the coating properties of TiN on Ti-13Zr-13Nb alloy.

Computational structural analysis of 3D printed hip joint implant and comparison of bio-compatible coating materials for design parameters: Coating thickness, hardness, and adhesion requirements

“…Similarly, experimental investigations indicate that the TiN coatings of approximately 3-3.5 mm show promisingly good adhesion values. [64][65][66][67] The adhesion frictional force in all these studies is above 10 N, and the scratch adhesion values of TiN coatings are well above Table 5. Maximum shear stresses and recommended shear force for the pelvis (for considered coating thickness of 3.3 mm).…”

“…Similarly, experimental investigations indicate that the TiN coatings of approximately 3-3.5 mm show promisingly good adhesion values. [64][65][66][67] The adhesion frictional force in all these studies is above 10 N, and the scratch adhesion values of TiN coatings are well above 68 These experimental results [63][64][65][66][67] along with 3D scanned bone simulations and analysis technique give the basic design criterion and a design strategy for any type of wear-resistant coatings in 3D printed implants.…”

“…One such example is of BryCoat incorporation which has a typical TiN coating thickness of 3 mm. 68 These experimental results [63][64][65][66][67] along with 3D scanned bone simulations and analysis technique give the basic design criterion and a design strategy for any type of wear-resistant coatings in 3D printed implants.…”

Effect of DC power on the thickness, hardness and adhesion strength of Ti-51 at% Ni coated Ti/TiN

“…The coating failure was determined by matching the critical load (Lc2) in the micrograph to the onset of coating failure. Lc2 indicates the adhesive failure point and indicates the strength of the interfacial adhesion in this coating/substrate system and is known as scratch adhesion strength [26].…”

The Influence of Ultrasonic Vibration Frequency on the Properties of TiN Coated Biomedical Ti–13Zr–13Nb

“…Common surface modification techniques include Chemical Vapor Deposition (CVD) [10], Physical Vapor Deposition (PVD) [11][12][13][14], Ion Implantation [15], Plasma Spray coating [16], Sol Gel [17,18], Nitriding [19], and Thermal Oxidation [20,21]. Among these, the PVD technique shows promising results by offering a low processing temperature (<500 • C) over a wide range of coating thicknesses as compared to other methods.…”