Evaluation and improvement of coating adhesion after Titanium plating
Publish Time: 2024-04-30
Titanium plating technology is widely used in many fields because of its excellent corrosion resistance, decoration and wear resistance. However, the adhesion of the coating is one of the important indicators to measure its performance. This article will explore how to evaluate the adhesion of coatings and ways to improve their adhesion.
1. Evaluation of coating adhesion
Commonly used methods to evaluate the adhesion of coatings include scratching, drawing and peeling. Among them, the scratch method is to evaluate the adhesion by applying a certain pressure on the surface of the coating and observing whether scratches appear; the pull-out method is to apply a pulling force between the coating and the base material, and evaluate the adhesion by measuring the maximum required pulling force. ; The peeling rule is to apply peeling force on the surface of the coating and observe whether the coating is easy to peel off to evaluate its adhesion.
2. Methods to improve coating adhesion
Surface preparation: Before Titanium plating, the surface of the stainless steel substrate should be thoroughly cleaned and polished to remove oil, oxides and other impurities and improve the finish and flatness of the substrate surface.
Pickling treatment: Pickling can remove oxide scale and rust on the surface of stainless steel, and improve the contact area and adhesion between the coating and the substrate.
Titanium plating solution adjustment: According to process requirements, adjust the composition, temperature, pH value and other parameters of the titanium plating solution to optimize the adhesion and quality of the coating.
Pre-plating treatment: For some stainless steel materials, a suitable pre-plating layer, such as copper plating or nickel plating, can be performed first to improve the adhesion and sealing between the coating and the base material.
Follow-up treatment: After Titanium plating, appropriate follow-up treatment, such as heat treatment or chemical treatment, can be performed to further improve the adhesion and durability of the coating.
In short, by optimizing the Titanium plating process and taking appropriate measures, the adhesion of the coating after Titanium plating can be effectively improved.
