Which factor is described as a property of titanium that improves bonding?

Which factor is described as a property of titanium that improves bonding?

• A. Reduced density
• B. Higher density
• C. Lower hardness
• D. Increased wettability

Answer: (D)

Wettability is the key to bonding on titanium. Bond strength depends on how well an adhesive can spread and flow over a surface, which is governed by surface energy. Titanium’s oxide layer can be made more hydrophilic through surface treatments, increasing surface energy and lowering the contact angle. When the surface is more wettable, the adhesive can better wet and penetrate the micro-roughness of the titanium, promoting stronger micromechanical interlock and any available chemical bonding. Density and hardness describe bulk material properties and don’t directly influence how an adhesive spreads, so they don’t enhance bonding. Increased wettability directly improves the adhesive’s contact with the surface, leading to a stronger bond.

Wettability is the key to bonding on titanium. Bond strength depends on how well an adhesive can spread and flow over a surface, which is governed by surface energy. Titanium’s oxide layer can be made more hydrophilic through surface treatments, increasing surface energy and lowering the contact angle. When the surface is more wettable, the adhesive can better wet and penetrate the micro-roughness of the titanium, promoting stronger micromechanical interlock and any available chemical bonding. Density and hardness describe bulk material properties and don’t directly influence how an adhesive spreads, so they don’t enhance bonding. Increased wettability directly improves the adhesive’s contact with the surface, leading to a stronger bond.