Deutsch
Wir sind führender Hersteller und Lieferant von Forschungsmaterialien
1751 von A.F. Cronstedt in Stockholm, Schweden, entdeckt.
[Kommt von Kupfer-Nickel und bedeutet entweder Teufels-Kupfer oder St. Nikolaus-Kupfer]
French: nickel
English: nickel
Italian: nichel
Spanish: niquel
Beschreibung: Silberweißes Metall, glänzend, verformbar und duktil. Korrodiert nicht, ist löslich in Säuren, außer konzentrierter HNO3, wird nicht von Alkalien angegriffen. Verwendung: Legierungen, Münzen, Katalysatoren, Elektroplattierung von Metallen.
| State: | single crystal |
|---|---|
| Crystal structure: | fcc |
| Production method: | Czochralski |
| Standard size: | diameter 10-20mm thickness 1-2mm |
| Orientation: | (100), (110) and (111) |
| Orientation accuracy: | <2°, <1°, <0.4° or <0.1° |
| Polishing: | as cut, one or two sides polished |
| Roughness of surface: | <0.03µm |
| Purity: | 99.99% |
| Typical analysis (ppm): | C 3 H < 1 O 9 N < 5 Cu 1.60 Fe 1.80 Ni < 1 Pb 0.30 Si 0.30 Ga, Hf and Ta are below the detection limit |
| Density: | 8.9 g/cm3 |
|---|---|
| Melting point: | 1452.85 °C / 1726 °K |
| Boiling point: | 2731.85 °C / 3005 °K |
| Molar volume: | 6.59 cm3 |
| Thermal conductivity: | 90.7 [300 K] Wm-1K-1 |
| Coefficient of linear thermal expansion: | 13.3 x 10-6 K-1 |
| Electrical resistivity: | 6.84x 10-8 [293 K] Wm |
| Mass magnetic susceptibility: | ferromagnetic |
| Young's modulus: | 199.5 GPa |
| Rigidity modulus: | 76.0 GPa |
| Bulk modulus: | 177.3 GPa |
| Poisson's ratio: | 0.312 GPa |
| Radii: | Ni3+ 62; Ni2+ 78; atomic 125; covalent 115 |
| Electronegativity: | 1.91 (Pauling); 1.75 (Allred); 4.40 eV (absolute) |
| Effective nuclear charge: | 4.05 (Slater); 5.71 (Clementi); 7.86 (Froese-Fischer) |
| Number of Isotopes (incl. nuclear isomers): | 14 |
| Issotope mass range: | 53 -> 67 |
| Crystal structure, (cell dimentions / pm), space group | fcc |
| X-ray diffraction: mass absorption coefficients: | CuKα 45.7 (µ/r) / cm2g-1 MoKα 46.6 (µ/r) / cm2g-1 |
| Neutron scattering length: | 1.03 b/10-12 cm |
| Thermal neutron capture cross-section: | 4.49 sa / barns |
| Biological role: | Essential to some species, and can act to stimulate metabolism. |
|---|---|
| Toxicity | |
| Toxic intake: | 1 - 3 mg kg-1 |
| Lethal intake: | LD50 (acetate, oral, rat)= 350 mg kg-1 |
| Hazards: | Nickel and many of its compounds are poisonous, carcinogenic and teratogenic. Nickel carbonyl is extremely tzoxic. |
| Level in humans | |
| Blood: | 0.01 - 0.05 mg dm-3 |
| Bone: | <0.7 p.p.m. |
| Liver: | 0.02 - 1.8 p.p.m. |
| Muscle: | 1 - 2 p.p.m. |
| Daily dietary intake: | 0.3 - 0.5 mg |
| Total mass of element in average [70 kg] person: | < 15 mg |
| Mineral | Formula | Density | Hardness | Crystal apperance |
|---|---|---|---|---|
| Garnierite | (Ni, Mg)6Si4O10(OH)8 | 2.3 - 2.5 | 2 - 4 | mon., aggregates, bright green |
| Nickeline | b-NiS | 5.27 | 3 - 3.5 | hex., met. copper-red |
| Pentlandite | (Ni, Fe)9S8 | 4.8 | 3.5 - 4 | cub., met., bronze-yellow |
| Chief ore: | garnierite, pentlandite (nickeline is rare but was the first mineral from which nickel was extracted |
|---|---|
| World production: | 510 000 tonnes/year |
| Main mining areas: | garnierite in Russia, South Africa, USA; pentlandite in Cananda, South Africa |
| Reserves: | 70 x 106 tonnes |
| Specimen: | available as foil, powder, rod, slugs, spheres and wire. Safe. |
| Abundances | |
|---|---|
| Sun: | 1.91 x 106 (relative to H = 1 x 1012) |
| Earth's crust: | c. 80 p.p.m. |
| Seawater: | |
| Residence time: | |
| Classification: | recycled |
| Oxidation state: | II |