The present invention relates to a process for the testing of new blade materials and / or of new blade coating materials (10, 11, 12) for blades (1) of a turbomachine, comprising the steps of: providing a turbomachine, in particular in the form of a gas turbine; providing at least one test component (7, 8, 9), which is made of a blade material to be tested produced and / or with a coating of a coating material to be tested (10, 11, 12) is provided; forming at least one recess (13, 14, 15) in at least one blade (1) of the turbomachine, wherein the dimensions of the at least one recess (13, 14, 15) corresponding to the dimensions of the at least one test component (7, 8, 9) are selected; insertion and fastening of the at least one test component (7, 8, 9) in the at least one recess (13, 14, 15); operating of the turbomachine under actual operating conditions and evaluation of the test component (7, 8, 9) at least a predetermined time period after the expiration.
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