Micro Nano Structure Control And Color Analysis Of Jun Porcelain Iron Glaze

Jun porcelain was a traditional decorative art ceramic with a distinctive and long history in China.Scientific research on it began in the middle of the last century and has made significant progress in the firing methods,cultural inheritance,and color regulation of Jun porcelain.However,there were few reports on the study of microstructure control and color formation mechanism analysis of Jun porcelain glaze.Iron oxide was often used as a colorant for Jun porcelain glaze due to its remarkable coloration effect and low raw material cost.In view of this,based on the transparent glaze of Jun porcelain and using nano iron oxide as the colorant,this article used modern characterization techniques to study the internal relationship between the chemical composition,phase composition,phase separation structure,chemical bonding of the glaze layer,and the coloration mechanism of Jun porcelain glaze,further explaining the coloration mechanism of the glaze layer.The specific research was as follows:(1)Nanometer iron oxide regulated the microstructure and color of Jun porcelain glaze layer.When the amount of nano iron oxide was in the range of 0 wt.% to 1.0 wt.%,the glaze changed from cyan to blue under reducing atmosphere,and the yellow color of oxidation atmosphere deepens;However,as the content of iron oxide continued to increase,the blue color of the glaze decreased in the reducing atmosphere,and the color of the glaze darkened in the oxidizing atmosphere.Adding nano iron oxide can increase the size of phase separation droplets in the Jun porcelain glaze layer,weakened the Rayleigh scattering of the Jun porcelain glaze layer,and weakened the blue color of such structures.(2)Temperature controlled microstructure and color of glaze firing.Under reducing atmosphere,with the increase of firing temperature,the color of Jun porcelain glaze gradually changed from green to blue;Under oxidizing atmosphere,the color of Jun porcelain gradually darkened as the firing temperature increases.Under reducing atmosphere,the control of firing temperature had a significant impact on the microstructure of Jun porcelain glaze layer.The size of phase separation droplets in the glaze microstructure decreased,the number and distribution of phase separation decreased,and the blue color of the glaze structure is enhanced..(3)Nano titanium dioxide control microstructure and color of glaze layer.Under reducing atmosphere,with the increase of the content of titanium dioxide added to the glaze layer,the opalescene of Jun porcelain glaze was obvious;Under oxidation atmosphere,the grain sensation of Jun porcelain glaze was significant.Under reducing atmosphere,nano titanium dioxide had a more significant impact on the microstructure of Jun porcelain glaze layer,which increased the size of fractional phase droplets and weakened the Rayleigh scattering phenomenon of the glaze layer.This article was of significance for the research and application fields of iron based Jun porcelain glaze,enriching the research on the color formation of iron based Jun porcelain glaze using nano colorants.A deep analysis of Jun porcelain color formation was conducted from the perspective of microstructure.The experimental conclusions were applicable to Jun porcelain commodity production,glaze preparation,facility firing process and other application fields.The main innovations of this article were as follows:(1)The introduction of nano iron oxide into Jun porcelain glaze explored the effects of nano iron oxide content,temperature changed,and other factors on the microstructure and color appearance of the glaze layer.(2)Iron based Jun porcelain glaze was doped with nano titanium dioxide,and the effect of nano titanium dioxide on the microstructure and color formation mechanism of Jun porcelain glaze layer was studied.