Magnesium alloys, as the lightest structural metal materials, are widely used in various fields due to their low density, high specific strength, good thermal conductivity, and electromagnetic shielding properties. They are applied in aerospace (such as satellite brackets, aircraft landing gear components), automotive industry (engine blocks, transmission housings), electronic equipment (laptop computer shells, mobile phone frames), and biomedicine (degradable implant devices). Their applications not only promote the lightweighting and energy conservation of transportation vehicles but also enhance the performance and reliability of components in high-end equipment manufacturing, making them a key material for the green development of modern industry. Due to their high chemical activity and tendency to deform, the preparation of metallographic samples for magnesium alloys presents certain challenges. The following are the sample preparation methods for your reference.
1. P400 metallographic sandpaper is used for rough grinding until the sample becomes flat.
2. P800, P1200, and P2000 metallographic sandpapers are used for fine grinding.
3. The sample is polished with SC + 3μm PD-WT anhydrous diamond polishing liquid.
4. The sample is polished with ZN + 0.05μm AO-WF anhydrous base alumina polishing liquid.