Manufacturing method of high-contrast and high-strength high-temperature-resistant grating

The invention discloses a manufacturing method of a high-contrast and high-strength high-temperature-resistant grating.The manufacturing method includes the steps that grating frequency is estimated, a process with a mask or a process without a mask is selected according to the grating frequency, an orthogonal grating with a certain groove depth and needed frequency is manufactured on the surface of a test piece through a laser marking machine, high-temperature-resistant nano-particles are selected and adsorbed to grooves in the surface of the grating of the test piece in a spraying mode, high-temperature-resistant nano-particles adsorbed to protruding parts of the grating are wiped away, and finally high-temperature sintering is carried out, so that the high-contrast and high-strength high-temperature-resistant grating is obtained.The manufacturing method is easy to implement and feasible, and the manufactured high-temperature-resistant grating is high in contrast, excellent in high temperature stability and suitable for deformation measurement in complex and hostile high temperature environments.