How to use a metallographic microscope to observe conductive particles
By using the metallographic microscope series in conjunction with polarization, calibration, and DIC differential interference, it is possible to observe the conductive particles on the screen well and confirm whether the number of conductive particles meets the requirements.
Firstly, it is necessary to observe conductive particles using a metallographic microscope equipped with DIC and polarizer. For observing conductive particles, the generally selected lens is required to be no more than 20 times, which may cause blurring of the observation effect due to depth of field issues, making it impossible to observe the desired effect.
After preparing the metallographic microscope and necessary screens, you can start observing the conductive particles. Firstly, pull out the DIC and deviation detection, then place the screen on the stage, adjust the focal length, and move it through the stage to find the observation position. Now insert the polarizer and calibrator, observe the position on the screen through the eyepiece, and adjust the calibrator until the light is at its darkest, then stop adjusting the calibrator. Finally, insert the DIC and adjust it to polarize until the conductive particles are clear, and then stop.
Cleaning and maintenance of microscopes:
1. When holding a microscope, both hands should be used simultaneously; When replacing the specimen slide, remember to convert it to a low magnification objective first.
When maintaining a microscope, first remove the dust from the microscope; When cleaning the objective lens, only use wiping paper dipped in clean water or lens cleaning solution (ethanol: acetate: ether=4:4:4:1, V/V/V).
3. Non oil contaminated lenses should not be contaminated with oil stains. If accidentally contaminated, it should be immediately wiped clean with lens cleaning solution; After each use of the oil immersion lens, it must be wiped clean before being put into the microscope box.
4. Do not remove the eyepiece to prevent spores from falling off the tube and mold growth.
5. Anti mold disposal: Mold on the lens is a potential problem for the microscope. Often, when you become aware of this problem, it quietly seeps into the surface of the lens and affects the observation quality. Moisture proof boxes and other moisture-proof products are common anti mold treatments.
