There are many preparation methods in the laboratory, and the methods for preparing different materials also vary greatly. Today, the editor of Kemai wants to share with everyone the preparation methods of laboratory iron and how to prevent the occurrence of corrosion pits during the preparation process. The details are as follows:


Material: Electrical pure iron


Requirement: After polishing, the mirror surface should have no scratches on the surface; 500X observation


Method number: Iron - Preventing the occurrence of corrosion pits


Preparation method:


Cutting: CRE-10-1535 grinding wheel cutting blade


Embedding: EpoPowder G epoxy resin is used for hot pressing inlay; Cold inlay using AcryQuick acrylic resin and curing agent


Grinding and polishing: manual polishing machine Qpol-M1; Automatic polishing machine METPOL-A

Precautions:


1. Iron is prone to corrosion, and using water-based polishing and cooling fluids can cause corrosion pits. Instead, use oil-based polishing and cooling lubricants.


2. If the surface quality of the sample cut is good, only one layer of metallographic sandpaper is used.


3. After completion, immediately rinse and blow dry with anhydrous alcohol.


4. At the end of each step, clean the sample, hands, fixtures, polishing disc, and polishing machine chassis thoroughly to prevent particle contamination.


To learn more detailed information about other sample preparation methods, please log in to the official website www.qmaxis.cn for technical exchange with the application engineers of Kemai Testing, or visit the Nanjing Laboratory of Kemai Testing for on-site testing.