Mechanoactivation and Colour Properties of Malayaites Doped with Lanthanoid
ČlánekOmezený přístuppeer-reviewedpostprintDatum publikování
2015
Vedoucí práce
Oponent
Název časopisu
Název svazku
Vydavatel
Abstrakt
The study deals with the preparation of the inorgan ic pigments of general formula CaSn0,855Cr0,045Ln0,1SiO5±δσ belonging to the group of the malayaites, where Ln = La, Ce, Pr, Nd, Sm, Eu and Gd (LMREE). The malayaite samples were prepared in powdered form by the solid state reaction. As initial components were used the following basic raw materials: calcium carbonate, tin oxide, chromium oxide,silicon oxide, and oxide of the respective lanthanoid serving as the dopant. The reaction mixtures were homogenised and ground in the planetary mill for five hours. After mechanoactivation, they were calcinate in the planetary mill for five hours. After mechanoactivation, they were calcinated at the temperatures from1200 °C to 1450 °C in the electric furnace for four hours. All the prepared pigments were applied / converted into a ceramic glaze P07410 and very interesting colours obtained: brown pink, deep burgundy, and red carmina shades. The colour characteristics were described by CIE L*a*b* system (1976). From the particle size distribution, it is evident that all three parameteres d(0.1) μm, d(0.5) μm, and d(0.9) μm, have increased with temperature. Finally, as confirmed experimentally, the mechanoactivation has led to very thin granules, increasing the brightness (L*).
Rozsah stran
p. 97-105
ISSN
1211-5541
Trvalý odkaz na tento záznam
Projekt
Zdrojový dokument
Scientific Papers of the University of Pardubice, Series A, Faculty of Chemical Technology, volume 21, issue: září
Vydavatelská verze
Přístup k e-verzi
Práce není přístupná
Název akce
ISBN
Studijní obor
Studijní program
Signatura tištěné verze
Umístění tištěné verze
Přístup k tištěné verzi
Klíčová slova
Mechanoactivation, Malayaite, Solid State Reaction, Color Properties, Color Area System, Mechanoaktivace, malayait, reakce v pevné fázi, barevné vlastnosti, barevný prostor