Preparation of Cast Iron Specimens
- Grind with 220-320 grit SiC (P240-P400), 240-300 rpm, 6 lbs/specimen, complementary rotation, until all samples in holder are co-planar
- Polish with 9-µm Metadi Supreme Diamond on an Ultra-Pol psa cloth, at 150 rpm, comp. rotation, 5 minutes
- Polish with 3-µm Metadi Supreme Diamond on a Texmet 1000 psacloth at 150 pm, comp. rotation, 4 minutes
- (Optional) Polish with 1-µm Metadi Supreme Diamond on a Trident psacloth at 150 rpm, comp. rotation, for 3 minutes
- Final polish with 0.05-µm Masterpolish alumina suspension on Microcloth psa pad, 120-150 rpm, contra rotation, for 2 minutes
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