[article]
| Titre : |
Nickel - an alternative |
| Type de document : |
texte imprimé |
| Auteurs : |
Tony Hart, Auteur |
| Année de publication : |
2004 |
| Article en page(s) : |
p. 17-18 |
| Langues : |
Anglais (eng) |
| Catégories : |
Nickel Le nickel est un élément chimique, de symbole Ni et de numéro atomique 28.
Le nickel est un métal blanc argenté qui possède un éclat poli. Il fait partie du groupe du fer. C'est un métal ductile (malléable). On le trouve sous forme combinée au soufre dans la millérite, à l'arsenic dans la nickéline.
Grâce à sa résistance à l'oxydation et à la corrosion, il est utilisé dans les pièces de monnaie, pour le plaquage du fer, du cuivre, du laiton, dans certaines combinaisons chimiques et dans certains alliages. Il est ferromagnétique, et est fréquemment accompagné de cobalt. Il est particulièrement apprécié pour les alliages qu'il forme.
Pigments métalliques
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
It is worth considering nickel and nickel based pigments says the author.
Metallic pigments have, for a number of decades, provided an essential tool in the hand of the formulators and manufacturers of organic based coatings. A number of different metals and alloys have been used for this type of application including aluminium, silver, gold, copper, bronze, stainless steel and nickel. Since many applications of organic-based metallic coatings are ones that depend on their decorative properties, the pigments are most usually employed in the form of flakes of varying sizes and thicknesses.
The inherent visual properties of the various types of metallic pigments generally determine the applications in which they are used. For example, aluminium flakes exhibit an extremely high level of reflectivity and have a very 'white' hue which makes them ideal for many applications where very bright coatings are required. Copper and bronze flakes however, which are available in a very wide range of colour shades, are extensively used in printing inks to simulate a 'gold' or 'gilt' appearence. Other types of flake pigment may be specified on the basis of properties other than just appearance, such as resistance to corrosion or chemical attack. For example, stainless steel flakes, whilst not showing such high level of brightness as aluminium, are frequently used in situations in which their excellent durability in aggressive environments is essential. |
| Note de contenu : |
- Versatility
- Decorative/functional coatings
- Electrically conductive coatings
- The future of nickel pigments
- Figure : Nickel - containing coatings for magnetic applications |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27770 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 194, N° 4473 (02/2004) . - p. 17-18
[article]
|
Aller sur edunet
Accueil
Nickel - an alternative in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 194, N° 4473 (02/2004)
