| abstract |
The invention relates to a process for the preparation of a metal part pressurized under uniaxial shock-like deformation or isentropic compression type (1) conditions in order to measure its temperature by optical pyrometry, the method comprising the formation of an emitting coating (2) on one face (3) of the metal part and being characterized in that the emissive coating comprises a first amorphous carbon layer (4) and a second amorphous carbon layer (5), the first layer being interposed between the face of the metal part and the second layer, and having a higher sp3 carbon hybridization rate than the sp3 carbon hybridization rate of the second layer. It also relates to a method for measuring, by means of optical pyrometry, the temperature of a metal part pressurized under uniaxial deformation conditions of the shock type or of the isentropic compression type, which comprises the preparation of the metal part obtained by setting implementation of the preparation method according to the invention, the application on the metal part (1) of a pressure under conditions of uniaxial deformation of shock type or isentropic compression type, the measurement of the intensity of radiation infrared emitted by the emissive coating (2) and the conversion of the intensity thus measured into a value of the temperature of the metal part under pressure. |