| Titre : |
Seeing red : Colour space and potential in hematites |
| Type de document : |
texte imprimé |
| Auteurs : |
Larissa Schaufler, Auteur ; Christine Kathrein, Auteur ; Kai Bütje, Auteur ; Peter Köhler, Auteur ; Carsten Rosenhahn, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 132-137 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Colorimétrie
Hématite
Oxyde de fer
Pigments métalliques
Rouge (couleur)
Spectroscopie d'absorption
|
| Index. décimale : |
667.2 Colorants et pigments |
| Résumé : |
We examined in detail how different colour nuances come about and where the coloristic potentials and limits are for iron oxide red pigments. First, the complex electronic structure of α-Fe2O3 was derived as an illustrative model and visuallised by the absorption spectrum of a hematite single crystal. In the case of the almost isometric hematite red pigments, the specific variation in particle size was used to explain the reasons for the changes in hue by means of the absorption spectra, with their characteristic values. |
| Note de contenu : |
- Colour changes with particle size variation
- Absorption spectra and spectroscopic parameters
- Correlating spectroscopic parameters with colour values
- The colour space of hematite red pigments : potential and limits
- Fig. 1 : Electronic structure (a) and single crystal absorption spectrum (b) of hematite
- Fig. 2 : Colour values of hematite as a function of specific surface area Sbet*
- Fig. 3 : Absorption spectra of hematite pigments with different particles sizes
- Fig. 4 : Correlation of the i(II)/I(AP) intensity relation with specific surface area
- Fig. 5 : Corelation of colour values with intensity relations I(AP)/i(II)
- Fig. 6 : Colour space of hematite red pigments in Alkydal L64 (full shade)
- Fig. 7 : b*/a* as a function of I(AP)/i(II)
- Fig. 8 : Colour space of hematite red pigments in Alkydal L64 (1:5 reduction with TiO2)
- Table 1 : Spectroscopic parameters of isometric hematite red pigments
- Table 2 : Colour values of hematite red pigments with different particles sizes |
| En ligne : |
https://drive.google.com/file/d/1VLkL3xX-DFGIWsDmQoZiAr2SLGsIFy_Y/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32027 |
in EUROPEAN COATINGS JOURNAL (ECJ) > N° 3 (03/2019) . - p. 132-137
Aller sur edunet
Accueil
Seeing red in EUROPEAN COATINGS JOURNAL (ECJ), N° 3 (03/2019)
