Temperature and corrosion resistant materials such as Hasteloy Nickel Based Superalloys are prepared mostly with standard metallographic techniques. However, the results can be significantly improved by using finely graded CMP (chemical mechanical polish) polishing solutions on a high napped polishing pad.
SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-E or MAX-VHS series)
MOUNTING
Compression Mounting with Phenolic, Epoxy or Diallyl Phthalate compression mounting resins
POLISHING
Abrasive/surface |
Lubricant |
Force/ sample |
Time |
240 grit SiC paper |
Water |
5 lbs |
Until plane |
1 um DIAMAT diamond on ATLANTIS polishing pad |
DIALUBE Purple Extender |
5 lbs |
3-5 minutes |
CMP polishing slurry on MICROPAD polishing pad (vibratory polishing is recommended for final step) |
|
5 lbs |
30-60 seconds (standard polishers) 10-15 minutes (vibratory polishing) |
Hastelloy etched with Adlers etchant, Mag. 200X (DIC). Composition: Molybdenum: 8-10%, Chromium: 20.5-23%, Iron: 17-20%, Tungsten: 0.2-1%, Cobalt: 0.5-2.5%, Carbon: 0.05-.015%, Silicon: 1%, Manganese: 1%, Boron: 0.01%, Phosphorus: 0.04%, Sulfur: 0.03%, Nickel: Remainder
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