Pure Molybdenum
Purpose：Pure Molybdenum Metallographic Sample Preparation Method.Molybdenum and its alloys are known for their high melting point, low thermal expansion coefficient, high strength and hardness at elevated temperatures, and excellent resistance to acids and alkalis. Referred to as the "energy metal," they are widely used in steel, aerospace, nuclear power, petroleum, solar, and wind energy industries.
Basic Guide：
Cutting：1.Choose A30 alumina oxide cutting disc cutting for pure molybdenum, and refer to the Trojan’s cutting guide for specific model selection.
2.Choose the constant speed cutting mode for cutting the sample, and the maximum cutting speed is recommended to be ≤ 0.25mm/s.
Mounting：Hot mounting or cold mounting resin can be used, and hot mounting is preferred.
Grinding：1.Use SiC abrasive paper to grind from P400 until the sample is flat and the damaged cutting layer is completely removed.
2.Use POS disc with 9um PD-WT polycrystalline diamond polishing solution for fine grinding.
3.After each grinding step, it is necessary to clean the sample, sample holder, and the hands.
Polishing：1.Before starting polishing, it is necessary to clean the polishing cloth, fixed sample holder, and hands. After each step of polishing, the cleaning steps need to be repeated.
2.Polishing clothes with different particle sizes using different polishing solutions cannot be mixed.
3.Rinse and dry the surface of the sample with alcohol and use a hair dryer to remove any residual water stains.
4.After each polishing step, observe on a metallographic microscope whether the thickness of the polishing scratches corresponds to the polishing particle size and whether the direction is random.
5.After use, the polishing cloth needs to be cleaned with running water and a soft bristled brush, and then drained and stored.
6.Pure molybdenum polishing cloth is only used for polishing pure molybdenum samples and should not be mixed with polishing other material samples.
