Device for preparing three-dimensional atom probe sample through temperature control

The invention belongs to the technical field of three-dimensional atom probes, and particularly relates to a device for preparing a three-dimensional atom probe sample through temperature control. A rack, a turntable, a ring gear, a motor, a straight gear, an electric push rod, a fixed frame and a negative ring are arranged; the electric push rod drives the sample to reciprocate up and down and sequentially enter and exit from the rough polishing electrolyte and the fine polishing electrolyte for electrolysis, and the sample moves to drive the electrolyte around the sample to move, so that the probability that the concentration of the electrolyte in the sample is not uniform is reduced, and the surface smoothness and uniformity of the sample during electrolysis are improved; after electrolysis is completed, the sample is immersed into anhydrous alcohol in the cleaning barrel, and the sample after electrolysis is completed is cleaned, so that the probability that the sample is continuously corroded is reduced;