Calotest
The Calotest, or calotte test, is a laboratory procedure used in surface engineering to assess the wear resistance and thickness of thin coatings on substrates. It is commonly applied to ceramic, carbide, and metal coatings in order to compare coating performance or to determine coating thickness with a small sample.
Principle and method: A small hemispherical cap (the calotte) or a corresponding abrasive tool is pressed against
Equipment and procedure: The test uses a Calotest apparatus with a calibrated calotte, a sample stage, and
Applications: The Calotest is employed to evaluate protective coatings on metals and ceramics, thin film coatings
Advantages and limitations: The method is compact, inexpensive, and suitable for small samples and rapid screening.