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Chromium single crystal 24Cr51.996
Discovered and isolated in 1780 by Nicholas Louis Vauquelin at Paris, France.
[Greek: chroma = colour]
French: chrome
German: chrom
Italian: cromo
Spanish: cromo
Description: Chromium is a hard, blue-white metal. It will dissolve in HCl and H2SO4 but not in HNO3, H3PO4 or HClO4 due to reaction and formation of a protective layer on the surface. Chromium can be polished to a high shine and resists oxidation in air. It main uses are in alloys, chrome plating and metal ceramics.
| Metal single crystal properties | ||
|---|---|---|
| State: | single crystal | |
| Crystal structure: | bcc | |
| Production method: | Floating zone | |
| Standard size: | diameter 6-10mm thickness 1-2mm |
|
| Orientation: | (100), (110) and (111) | |
| Orientation accuracy: | <2°, <1°, <0.5° or <0.1d° | |
| Polishing: | as cut, one or two sides polished | |
| Roughness of surface: | <0.03µm | |
| Purity: | 99.999% | |
| Typical analysis (ppm): | Ag < 0.10 C 10.0 Ca 0.01 Cd < 0.10 Cl 1.60 Co < 0.10 Cu < 0.10 Fe 18.0 H < 2.00 |
Mg < 0.10 Mn < 0.10 Mo < 0.20 N < 5.00 Na < 0.10 Ni 3.00 O < 5.00 Si 4.80 Cr balance |