Zeynep GÜNER, BSc. Student
Metallurgical and Materials Engineering
Yıldız Technical University
Development of Yttrium oxide red pigment doped with Al3+ and Cr3+
Supervisor: Emre Aslan, Assoc Prof. Dr. Buğra Çiçek
Hence currently available red ceramic pigment does not satisfy the existing needs of the ceramic industry, the study of red inorganic pigment has been developed to color products. In a perovskite structure like YAlO3, substitution of Al3+ by some Cr3+ ions can change the initial colorless structure to a red color one, depending on the extent of substitution. A variety of metal oxides like Y2O3, Al2O3 and, Cr2O3 was used to produce red pigment. The solid-state reaction method was used to synthesize inorganic pigment. Y2O3, Al2O3, Cr2O3 and mineralizers were homogenously mixed in different ratios. This mixture was calcined at 1500°C. The resulting red pigment was milled with Alumina ball mill to reduce the particle size. The glaze, enamel and glass applications were applied with the obtained Yttrium oxide pigment. Color values of synthesized red pigment were measured in CIE L*a*b* color index. XRF and XRD analyses were used to determine chemical composition and phase structures.
 Shirpour, M., Sani, M. A. F. and Mirhabibi, A. (2007) ‘Synthesis and study of a new class of red pigments based on perovskite YAlO3 structure’, Ceramics International, 33(8), pp. 1427–1433. doi: 10.1016/j.ceramint.2006.04.023.