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Inconel
Specimen Preparation (Class 6 Procedures)
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Corrosion resistant materials such as Inconel are relatively easy to polish by standard metallographic techniques. However, the results can be significantly improved by using finely graded nanometer alpha alumina polishing solutions.
SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-D or MAX-I series)
MOUNTING
Compression Mounting with Phenolic, Epoxy or Diallyl Phthalate compression mounting resins
POLISHING
| Abrasive/surface | Lubricant | Force/ sample | Speed (Head/base) |
Time | Individual Force mode |
Central Force mode |
|---|---|---|---|---|---|---|
| 120 grit SiC paper* 240 grit SiC paper* |
Water | 5-10 lbs | 200/200 rpm | Planar 1 min |
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| 360 grit SiC paper 600 grit SiC paper |
Water | 5-10 lbs | 200/200 rpm | 1 min 1 min |
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| 9 um DIAMAT diamond on POLYPAD polishing pad |
DIALUBE Purple Extender |
5 lbs | 200/200 rpm | 3 min | |
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| 6 um DIAMAT diamond on TEXPAN polishing pad |
DIALUBE Purple Extender |
5 lbs | 200/200 rpm | 3 min | |
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| 1 um DIAMAT diamond on GOLDPAD polishing pad |
DIALUBE Purple Extender |
5-10 lbs | 200/200 rpm | 2 min | |
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| 0.05 um Nanometer alumina on NAPPAD polishing pad |
5-10 lbs | 200/200 rpm | 30 sec | |
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*Required for central polishing force. Click here for more information on central vs. individual polishing force polishing.
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| Inconel-625, Mag. 100X, Etchant-Carpenters-few seconds |
ETCHING
Common Etchants
CAUTION:Safety is very important when etching. Be sure to wear the appropriate protective clothing and observe all WARNINGS on chemical manufacuters SDS (Safety Data Sheets). Also review the COMMENTS and CONDITIONS Section for each etchant.
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