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| Test and analysis of needle-like metallographic sample in micro-nano scale |
| YANG Xiao1, PAN Hengpei1, WANG Shining1, LI Xuefeng1,2, ZHANG Xinyao1,2, GAO Lingqing1,2 |
1. Luoyang Ship Material Research Institute, Luoyang 471023, China;
2. Henan Key Laboratory of Technology and Application Structural Materials for Ships and Marine Equipments, Luoyang 471023, China |
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Abstract In the process of metallographic analysis, the insetting of needle-like sample in micro-nano scale will easily cause the capillary phenomenon, which leads to the limited resolution of metallographic structure. As a result, it is difficult to accurately evaluate the micro structure. The needle-like sample in micro-nano scale were treated by grinding and polishing, and then eroded with the chemical reagents. After that, the sample was placed in ethanol and acetone solution for ultrasonic treatment followed by drying with a hair dryer. The results showed that due to the low melting point and high volatility of acetone solution, the addition of ultrasonic treatment in acetone solution in the process of conventional micro-nano metallographic sample could effectively remove the residual solution between the mosaic material and the sample. The occurrence of capillary phenomenon was reduced, which could ensure the clear observation of metallographic sample as well as the effective characterization of microstructure.
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Received: 26 August 2022
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2023, Vol. 41 
