Synthesis and Possibilities of Utilization of Orthoferrites With Praseodymium

Abstract

In this study, the orthoferrite PrFeO3 was prepared by calcination of initial mixture of raw materials Fe2O3 and Pr6O11 at the temperature 1000-1400°C with the duration 3 h. The calcined products were investigated as inorganic pigments. The particle size distribution was measured by the device Mastersizer 2000/MU (Malvern Instr., GB). The phase composition was verified by the X-ray diffraction analysis using the apparatus D8 Advance (Bruker, GB). A heating microscope with automatic image analysis EM201-12 (Hesse-Instruments, Germany) was used for study of the thermal stability. The main attention was concentrated on assessment of colour properties. The colour properties were determined for powders and pigments applied into two binder systems. The acrylate matrix and the transparent leadless glaze P 07410 were selected. The compounds were dosed into binders in weight ratio in the mass tone, 10 wt. % respectively. The ColourQuest XE (HunterLab, USA) was used for characterization of colour properties.