Synthesis of Copper Based Pigments

Light turquoise pigment was synthesized by solution combustion of a mixture containing Al(OH) 3 , solutions of boric, citric, and phosphoric acids, and copper nitrate and subsequent annealing at temperatures up to 900°C. To increase the thermal stability of pigments, the synthesis was carried out us...

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Bibliographic Details
Published in:International journal of self-propagating high-temperature synthesis 2023-12, Vol.32 (4), p.326-331
Main Authors: Radishevskaya, N. I., Nazarova, A. Yu, L’vov, O. V., Minin, R. P.
Format: Article
Language:English
Subjects:
Aluminum phosphate
Annealing
Borates
Chemistry and Materials Science
Copper
Corrosion prevention
Materials Science
Phosphates
Phosphides
Phosphoric acid
Pigments
Synthesis
Thermal stability
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Summary:Light turquoise pigment was synthesized by solution combustion of a mixture containing Al(OH) 3 , solutions of boric, citric, and phosphoric acids, and copper nitrate and subsequent annealing at temperatures up to 900°C. To increase the thermal stability of pigments, the synthesis was carried out using an aluminophosphate binder. The synthesized pigments were found to contain amorphous borates, boron phosphate, phosphates and pyrophosphates of aluminum and copper. The copper phosphide CuP 2 impurity formed during the synthesis process and subsequent annealing at 700°C gives the pigment a grayish tint but increases its anticorrosion properties.
ISSN:1061-3862
1934-788X
DOI:10.3103/S1061386223040167