Carbon-Steel / Titanium Weld
Specimen Preparation (Class 6 Procedures)
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Welding of disimilar metals can be challenging due to the individual properties, including melting temperatures and chemical compositions of the various metals. By analyzing the microstructure and the heat affected zone (HAZ), the quality, strength and properties of the metal interface can be examined.
SECTIONING
MAXCUT Abrasive blade (Cat. No. MAX-C 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 MICROPAD or MICROPAD 2 polishing pad |
5-10 lbs | 100/100 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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| Carbon-steel / Titanium Weld, 1500X, etched Sarajan's Reagent (73% DI water, 16% HF, 6% HNO3, 5% HCl) |
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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