kaloMAX IISpherical cap grinder for the determination of layer thickness • Measurement of single layer and layer systems • Measurement independent of the material • Comfortable operation • Precise measurement without calibration EJBAQ GmbH • Hermann-Schlichting-Str. 14 • D-38110 Braunschweig (Germany) • Phone: +49 (0)5307 95102-0 • www.baq.de coating analysis

■■■ kaloMAX II Spherical cap grinder for the determination of layer thickness of coatings and layer systems The ball crater test is a well established method for the determination of layer thickness. With a rotating steel ball and an abrasive slurry, a spherical cap is ground through the coating into the base material of the sample. When examined with a microscope, the layer/base material interface appears as a circle or, in case of a multilayer coating, a system of concentric circles. The layer thickness can be calculated from the diameters of these circles and the diameter of the grinding ball. This...