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Journal of Ceramic Science and Technology

The Journal of Ceramic Science and Technology publishes original scientific articles on all topics of ceramic science and technology from all ceramic branches. The focus is on the scientific exploration of  the relationships between processing, microstructure and properties of sintered ceramic materials as well as on new processing routes for innovative ceramic materials. The papers may have either theoretical or experimental background. A high quality of publications will be guaranteed by a thorough double blind peer review process.

The Journal is published by Göller Verlag GmbH on behalf of the Deutsche Keramische Gesellschaft (DKG). Edited by Yu-Ping Zeng, Shanghai Institute of Ceramics, Chinese Academy of Sciences, China.

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Effect of Particle Size on the Blue Chromate Pigment CoAl2O4

Y. Wang1, Q. Wang1, Q. Chang1, S. Hu1, X. Wang2, K. Yang1

1 School of Materials Science and Engineering, Jingdezhen Ceramic Institute, Jingdezhen 333403, P. R. China;
2 College of Science and Art, Jingdezhen Ceramic Institute, Jingdezhen 333001, P. R. China

received Juli 24, 2017, received in revised form August 30, 2017, accepted October 2, 2017

Vol. 9, No. 1, Pages 43-46   DOI: 10.4416/JCST2017-00060

Abstract

A stable ceramic ink for inkjet printing requires ultrafine pigment powders. However, the decreased particle size of the ceramic pigment has an uncertain effect on the chromate. To understand this effect, a series of CoAl2O4 powders with different particle sizes was prepared with the nitrate-glycine combustion method followed by bead milling. The results show that the average particle size (d50) of the CoAl2O4 powder decreases from 6.4 μm to 0.33 μm after milling for 10 h. The particle size has a clearly negative effect on the color of CoAl2O4 pigment. The chromate value changes from L* = 49.82, a* = 0.05, b* = -50.90 to L* = 56.42, a* = -13.15, b* = -28.02. Accordingly, the CoAl2O4 pigment changes from dark blue into sky blue. However, this rule is weak for CoAl2O4 pigment used in transparent glaze. The chromate of glaze changes only from L* = 29.65, a*= 25.07, b* = -52.12 to L* = 20.61, a* = 22.28, b* = -41.35. The glaze changes from dense blue into bright blue.

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Keywords

Inkjet printing, pigment, CoAl2O4, particle size, chromate

References

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