Rotary motion type automatic electrolytic polishing device and method for EBSD test sample

Abstract

The invention discloses a rotary motion type automatic electrolytic polishing method and device for an EBSD test sample. The device comprises a liftable cantilever support (2) with a positioning cone,an electrolytic polishing tank (6) with a hemisphere inner bottom surface , a herringbone clamp (7), a position adjusting chuck (5) and a motor (1). The method comprises the steps of sample grinding,sample (10) installation, sample and anode connection, electrolytic polishing tank and cathode connection, electrolytic polishing solution (9) preparation, electrolytic polishing and sample post-treatment. The electrolytic polishing tank on the inner bottom surface of the hemisphere is used as a cathode for electrolytic polishing, so that voltage and current density contour lines are concentrically and circularly uniformly distributed in the electrolytic polishing solution, the stability of voltage and current of a to-be-polished surface is greatly improved, and the quality of the electrolytic polishing surface is greatly improved.

Description

technical field [0001] The invention relates to a rotary motion type EBSD test sample automatic electrolytic polishing device and method, belonging to the field of metal material analysis and testing. Background technique [0002] Electron Backscatter Diffraction (EBSD) technology is based on scanning electron microscope electron beam on the surface of the inclined sample to excite and form diffraction Kikuchi bands, so as to analyze and determine the crystal structure, orientation and related information. As we all know, microscopic morphology, crystal structure, orientation distribution and phase distribution are important information to characterize crystalline materials, and also the key to determine the properties of crystalline materials. The acquisition of these information is of great help to understand the microscopic mechanism of material properties. Metallographic photographs or scanning electron microscope photographs are the most commonly used microstructure top...

AI Technical Summary

Problems solved by technology

However, if the sample is electrolytically polished in a static state, it is easy to make the surface of the sample adhere to the film, resulting in the failure of electrolytic polishing; manually driving the sample to reciprocate and swing for electrolytic polishing, it is difficult to maintain stable voltage and current, and it is not easy to obtain a high-quality surface.

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