Multi-element Analysis of Coating Thickness & Composition by EDXRF - Metal - Metal Finishing

The type of metal coating applied depends on the end-use of a product. Some metal coatings serve as barriers for dirt and debris and protect against rust and corrosion. These types of coatings are imperative for products like vehicles, aircraft, boats, trains, heavy industrial equipment, building materials, and outdoor equipment. Other types of coatings act as lubricants for products like nuts, bolts, and screws, making them easier to loosen or tighten. Coatings are sometimes both cosmetic and functional, such as coatings applied to planes and automobiles. Aerodynamic performance hinges on smooth surfaces, whereas the color choice is aesthetic.

XRF (X-ray fluorescence) technology was initially developed, in part, because the deep X-ray penetration depths enable measurements that are unachievable by using other methods (e.g., eddy current testing). The application reach of X-ray based non-destructive testing (NDT) continues to grow because the measurement of coatings and thin films continues to be an ideal and widespread use of EDXRF. Many facilities rely on EDXRF-based quality control technology — from general plating shops, including plating baths — to aerospace, marine, automotive, and military manufacturing.

To achieve reliable QA/QC (quality assurance/quality control), Rigaku offers the NEX QC Series high-value benchtop EDXRF analyzers. By simply placing a test coupon in the analysis chamber, the NEX QC Series EDXRFs provide QC technicians with an ideal tool for quickly checking coating thickness and composition. Specially designed for quality control applications, the NEX QC Series analyzers combine superior performance capabilities with affordability. The intuitive touchscreen interface and built-in printer make these instruments easy to use and convenient. NEX QC Series elemental analyzers help maintain consistent product quality while keeping inventory costs in-balance and minimizing the chances of product rejection.

For in-line process control needs, Rigaku offers the NEX LS scanning multi-element coatings analyzer. The NEX LS linear scanner provides real-time coat weight profiling of your process. The NEX LS consists of a measurement head mounted to a motorized frame, which carries the head back and forth across a moving web or coil. Real-time data display as a graphical cross direction and machine direction profile. Users input basic information about samples, and the advanced NEX LS software supports all aspects of process control. To maintain consistent quality, improve efficiency, and minimize cost, the NEX LS is engineered to solve the challenges found in coating and converting processes.

For conditions found in aqueous chemical bath solutions, the Rigaku NEX OL process analyzer is an advanced EDXRF instrument for on-line, multi-element analysis of plating bath composition. Chemical baths require continuous monitoring to ensure the highest quality surface treatments, and the NEX OL offers high-throughput manufacturers with a real-time analysis system for quantifying the elemental composition of their process stream.

• Single-layer coatings; one coating over a substrate (Zr, P, Zn, Ni, Cr, Cu, etc.)
• Binary alloy coatings
• Multilayer coatings; two or more layers over a substrate
• Composite coatings over a substrate
• Solution analysis of plating baths