Open AccessSynthesis of FexZn1-xCr2O4 brown ceramic pigment by starch-assisted sol-gel process
Author(s) -
Trần Ngọc Tuyền,
Nguyễn Đức Vũ Quyên,
Trần Bảo Lâm
Publication year - 2019
Publication title -
tạp chí khoa học đại học huế: khoa học tự nhiên/tạp chí khoa học đại học huế: khoa học tự nhiên (online)
Language(s) - English
Resource type - Journals
eISSN - 2615-9678
pISSN - 1859-1388
DOI - 10.26459/hueuni-jns.v128i1b.5245
Subject(s) - pigment , spinel , crystallinity , scanning electron microscope , sintering , materials science , ceramic , starch , sol gel , chemical engineering , phase (matter) , mineralogy , nuclear chemistry , chemistry , composite material , metallurgy , nanotechnology , organic chemistry , engineering
In the present paper, the ceramic pigments of Fe x Zn 1-x Cr 2 O 4 (x = 0 ¸ 1) were synthesized by the starch assisted sol-gel method. The resulting pigments were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), CIE L*a*b* color measurement. The results showed that the preparation pigments of Fe x Zn 1-x Cr 2 O 4 , calcinated at 1100 o C for 60 minutes, obtained phases of spinel ACr 2 O 4 (A: Zn, Fe) and perovskite FeCrO 3 with excellent crystallinity. The brown color intensity was gradually increased as a function of the amount of substituted Fe 2+ ion. The achieved pigments met industrial requirements in terms of physicochemical characteristics.