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Synthesis and characterization of inorganic pigments based on transition metal oxynitrides

Published online by Cambridge University Press:  03 March 2011

R. Pastrana-Fábregas ,
J. Isasi-Marín  and
R. Sáez-Puche
R. Pastrana-Fábregas
Affiliation:
Departamento Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040-Madrid, Spain
J. Isasi-Marín
Affiliation:
Departamento Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040-Madrid, Spain
R. Sáez-Puche*
Affiliation:
Departamento Química Inorgánica I, Facultad de Ciencias Químicas, Universidad Complutense, 28040-Madrid, Spain
*
a) Address all correspondence to this author. e-mail: [email protected]
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Abstract

Tantalum zirconium oxynitrides in the Ta–Zr–O–N system of Ta(3−x)Zrx(O/N)6 and Ta(3−x)ZrxN(5−x)Ox (0 ≤ x ≤ 0.6) compositions have been synthesized by the nitridation of the amorphous tantalum zirconium oxides, obtained by sol-gel technique, with flowing ammonia at temperatures in the range 1023–1123 K for several hours. Different coloration has been obtained, going from yellow to red, whose intensity is a function of the nitrogen content in each sample. The structure of these oxynitrides has been refined from powder x-ray diffraction by the Rietveld method. The present study shows that the baddeleyite phase is formed in the preliminary stages of the nitridation and then transformed to the Ta3N5-type phase. Below 1123 K, a baddeleyite-type structure with a monoclinic symmetry, space group P21/c, is observed in these phases. When the nitration temperature increases, a marked increase in the nitrogen content takes place, and these materials adopt the Ta3N5 structure, space group C2/m. Diffuse reflectance spectra and CIE-LAB color coordinates suggest that the solid solutions Ta(3−x)Zrx(O/N)6 and Ta(3−x)ZrxN(5−x)Ox (0 ≤ x ≤ 0.6) are expected to be promising candidates for new ecological pigments.

Keywords

Optical propertiesSol-gelTa
Type
Articles
Information
Journal of Materials Research , Volume 21 , Issue 9 , September 2006 , pp. 2255 - 2260
Copyright
Copyright © Materials Research Society 2006

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References

REFERENCES

1Buxhaum, G.: Industrial Inorganic Pigments (VCH, Germany, 1993).Google Scholar
2Color for Art Science and Technology, (Azimuth 1), edited by Nassau, K., (Elsevier Science B.V., Amsterdam, The Netherlands, 1998).Google Scholar
3Diot, N., Larcher, O., Marchand, R., Kempf, J.Y., and Macaudiere, P.: Rare-earth and tungsten oxynitrides with a defect fluorite-type structure as new pigments. J. Alloys Compd. 45–48, 323 (2001).Google Scholar
4Bertaux, S., Reynders, P., Heintz, J.M., and Lerch, M.: New (oxy) nitride pearlescent pigments. Mater. Sci. Eng. B 121, 137 (2005).CrossRefGoogle Scholar
5Grins, J., Käll, P-O., and Svensson, G.J.: Phases in the ZrxTa1−x(O,N)y system, formed by ammonolysis of Zr–Ta gels: Preparation of a baddeleyite-type solid solution phase ZrxTa1−xO1+xN1-x, 0 ≤ x ≤ 1. J. Mater. Chem. 4, 1293 (1994).CrossRefGoogle Scholar
6Jansen, M. and Letschert, H.P.: Inorganic yellow-red pigments without toxic metals. Nature 404, 980 (2000).CrossRefGoogle ScholarPubMed
7Guenther, E. and Jansen, M.: Optical properties of Ta(3−x)ZrxN(5−x)Ox semiconductor pigments. Mater. Res. Bull. 36, 1399 (2001).CrossRefGoogle Scholar
8Orhan, E., Tessier, F., and Marchand, R.: Synthesis and energetics of yellow TaON. Solid State Sci. 4, 1071 (2002).CrossRefGoogle Scholar
9Jansen, M., Letschert, H.P., and Speer, D.: Method of producing tantalum (V) nitride and its use. European Patent No. 592876 (1993).Google Scholar
10Guenther, J.M. and Letschert, H.P.: Verfahren zur Herstellung von gelben und roten Pigmenten auf der Basis von Nitriden und Oxinitriden, German Patent No. 199907618.9 (1999).Google Scholar
11Guenter, E.: Dissertation, Bonn, Germany (2000).Google Scholar
12http://www.lecoinstrumentos.es.Google Scholar
13 Rodríguez-Carvajal: in Abstracts of the Satellite Meeting on Powder Diffraction of XVth Congress of the Int. Union of Crystallography (Toulouse, 1990), p. 127.Google Scholar
14Armytage, D. and Fender, B.E.F.: Anion ordering in TaON: A powder neutron-diffraction investigation. Acta Crystallogr., Sect. B 30, 809 (1974).CrossRefGoogle Scholar
15Howard, C.J., Hill, R.J., and Reichert, B.E.: Structures of the ZrO2 polymorphs at room temperature by high-resolution neutron powder diffraction. Acta Crystallogr., Sect. B 44, 116 (1988).CrossRefGoogle Scholar
16Strähle, J.: Die Kristallstruktur des Tantal(V)-nitrids Ta3N5. Z. Anorg. Allg. Chem. 402, 47 (1973).CrossRefGoogle Scholar
17Terao, N.: C.R. Acad. Sci. C 285, 17 (1977).Google Scholar