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PACE Technologies Metallographic Preparation CLASS Chart icon

20% SiC particles in 80% Zirconium Diboride Matrix (CMC)
Specimen Preparation (Class 10 Procedures)
Metallographic Class 10 sample preparation

The key to proper specimen preparation of hard / brittle ceramic matrix composite materials is to first section the sample with the appropriate diamond wafer blade, rough grind with as fine a semi-fixed abrasive as possible, followed by the use of CMP (chemical mechanical polishing) techniques.



SECTIONING

Diamond Wafering blade - medium grit / low concentration

MOUNTING
Castable Mounting with Epoxy or Acrylic resins.

POLISHING
Abrasive/surface Lubricant Force/ sample Speed
(Head/base)
Time Individual
Force mode
Central Force
mode
70 micron diamond grinding disk*
Water 5-10 lbs 200/200 rpm Planar
  Metallographic central polishing force
30 um DIAMAT diamond
suspension on CERMESH Metal
Mesh cloth
  5-10 lbs 200/200 rpm 5 min Metallographic individual polishing force Metallographic central polishing force
9 um DIAMAT diamond on
POLYPAD polishing pad
DIALUBE Purple
Extender
5-10 lbs 200/200 rpm 5 min Metallographic individual polishing force Metallographic central polishing force
6 um DIAMAT diamond
on TEXPAN polishing pad
SIAMAT
colloidal silica
10 lbs 200/200 rpm 5 min Metallographic individual polishing force Metallographic central polishing force
1 um DIAMAT diamond
on GOLDPAD or ATLANTIS
polishing pad
SIAMAT
colloidal silica
10 lbs 200/200 rpm 5 min Metallographic individual polishing force Metallographic central polishing force
SIAMAT Colloidal silca on
BLACKCHEM 2 polishing pad
  10 lbs 200/200 rpm 5 min Metallographic individual polishing force Metallographic central polishing force

*Required for central polishing force. Click here for more information on central vs. individual polishing force polishing.

Metallographic micrograph of SiC particles in ZrB2 matrix
20% SIC - 80% ZrB2 Ceramic, 1000X (DIC),
as polished condition

Common Etchants
PACE Technologies Recommended Etchants

PACE Technologies Etchant Database

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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3601 E. 34th St.
Tucson, Arizona 85713
+1-520-882-6598
FAX +1-520-882-6599
email: pace@metallographic.com
https://www.metallographic.com


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Metallographic
Consumables

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PACE TECHNOLOGIES® - 3601 E. 34th St., Tucson, AZ 85713, USA
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