Laboratory Equipment

Coating Thickness Measurement Calotest


Fast and easy layer thickness measurement Measurement of single layer and layer systems Measurement independent of the material Comfortable operation Precise measurement without calibration The ball crater test (Calotest) 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.

Coating Thickness Measurement Calotest

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