Surface coating is a complex combination of raw materials. Researchers at Alfa Chemistry mixed it and applied it to the prepared substrate, dried and cured it to maximize its performance.
Coating product surfaces are challenging in many ways and may suffer premature failure and/or exhibit defects. Determining the cause of coating surface defect is often not straightforward. The unqualified products of the coating may come from substrate defects, surface contaminants or coating material defects, which require further evaluation and analysis by professionals.
In order to determine the cause of coating defects, Alfa Chemistry’s chemists and coating experts use specialized laboratory equipment to evaluate all possible contributing factors for you. The following is a list of some surface defects and their solutions.
Coating Delamination
The loss of adherence of the coating to the surface or between the coatings is referred to as delamination. The failure interface characterizes the delamination of the coating, which is linked to the adhesive failure. Delamination commonly happens at uneven pairs of materials when insufficient glue is employed or moisture penetrates and weakens the interface. Delamination wreaks havoc on the coating's strength and longevity, as well as the material's looks. As a result, the substrate is prone to corrosion.
You can choose the chemical composition analysis provided by Alfa Chemistry analysis service to characterize the chemical composition of the fault interface, which allows you to better understand such problems.
For a variety of materials, Alfa Chemistry can use its own professional coating platform technology to provide you with customized interface glue chemicals.
Coating Decolorization
Coating products are usually defined by their appearance. Color is an important parameter. There are many reasons for the color change, for example, the surface is covered by another layer, or the material decomposes when irradiated.
Alfa Chemistry can use sophisticated surface analysis tools to help you understand the color changes on the product surface. We have two important instruments-X-ray Photoelectron Spectroscopy (XPS) and Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS).
Technical Pollution
Contamination has the potential to result in significant losses in the manufacturing of high-quality coated products. The classic coating "fouling" is a sort of contamination that can be detected using normal techniques, including microscopy where appropriate. Chemical pollution of environmental compounds, on the other hand, can lead to more serious issues, such as carbon or silicon pollution in manufacturing plants.
Alfa Chemistry can provide analytical services to identify and solve coating contamination problems. Our experts often measure up to 40 At-% of carbon pollution on surfaces that are considered "clean" when using microscopy techniques to inspect, especially when the components are sourced from outside. Without X-ray photoelectron spectroscopy (XPS) inspection, it is almost impossible to clearly and completely know the surface of the part.
Alfa Chemistry is an expert in surface coatings. Do not hesitate to discuss with us any related requirements for your specific application via the contact form.
