Thin-film coating pretreatment
Ti coating film formation
What is "thin film coating pretreatment" by wet blasting?
When wet blasting is used as pretreatment for coating, a strong coating film can be formed on the surface by the anchor effect, which provides nano-level fine unevenness having no time dependency.
Wet blasting is a physical process and compatible with a wide range of organic and inorganic materials.
Four features of wet blasting
- No time dependency - There is no time dependency due to the wettability improved by surface area expansion.
- No deterioration - Since processing heat is not generated, no deformation or deterioration occurs.
- Nano anchor formation - Nano-level fine uneven surfaces are formed and an anchor effect can be expected.
- Fast batch processing - The etching rate is larger than that of other surface etching methods. The desired etching amount can be obtained in a short time.
Wet Blasting Image
Wet blasting is a technique to project a mixture of abrasive and water at high speed with compressed air against a material to clean, process, and modify its surfaces. This technique allows fine abrasives to be used due to wet processing, and is good at forming a fine uneven surface while grinding the surface of the workpiece while silmutaneously removing dirt and foreign matter.
In addition, this chemical-free technique is eco-friendly and environmentally friendly, and it is also effective in reducing industrial waste.
Evaluating the cleaning power of wet blasting
A comparison of untreated and wet-blasted surfaces shows that the amount of carbon (contamination) on the surface was reduced.
Comparison of element concentrations before and after wet blasting
Glass x SiO2 Coating
Cross-Cut Test Results
- Processing condition / abrasive: Polygonal alumina / Air pressure: 0.20 MPa
Scratch Test Results
Substrate plating prewash
Removes surface contamination during manufacturing of printed circuit boards, to improve the adhesion of gold plating.