Passivation Characteristics of Titanium and Titanium Alloys

Titanium and Grade 7 Titanium Plate are active metals, which can easily react with oxygen in the air to form a very thin transparent oxide film, which passivates the surface and forms a passivation film. On the one hand, this passivation film protects the base metal and improves the corrosion resistance of the metal surface; on the other hand, because the formation of the passivation film reduces the activity and electrical and thermal conductivity, it is difficult to coat the surface, which will obviously affect the bonding force between the coating layer and the substrate. Therefore, activation treatment must be performed before the surface of titanium and Grade 3 Pure Titanium Plate, which is a critical step to ensure the bonding force between the plated layer and the substrate.