Method for preparing thin metal film samples for transmission electron microscopy from rapidly thinned 1500mpa grade martensitic steel
By employing chemical etching thinning and electrolytic dual-jet technology, the problem of low mechanical grinding efficiency in the preparation of martensitic steel samples for transmission electron microscopy was solved, achieving rapid, low-cost, and high-quality sample preparation.
CN122409280APending Publication Date: 2026-07-17ANGANG STEEL CO LTD
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANGANG STEEL CO LTD
- Filing Date
- 2026-05-12
- Publication Date
- 2026-07-17
Smart Images
Figure CN122409280A_ABST
Abstract
This invention belongs to the field of metallic material sample preparation, and particularly relates to a method for rapidly thinning 1500MPa grade martensitic steel metal thin film samples for transmission electron microscopy. The sample is first wire-cut into thin sheets, cleaned with sandpaper, and then thinned to 120–150 μm on both sides using a chemical etching reagent. Next, it is manually thinned to 50–60 μm on both sides using sandpaper. Finally, the sample is electrolytically thinned using a double-jet electrolytic thinning instrument until a central perforation is achieved, followed by washing with anhydrous ethanol. The advantages are: stable internal sample structure, strict control of reaction conditions, avoidance of surface hardening layer formation, and shortened sample preparation time.
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