Structural properties of the red-color overglazes on the Kakiemon-style porcelains produced in the later 17th century by means of X-ray diffraction (I)

Abstract

Kakiemon-style porcelains produced at Arita areas (SAGA) in Kyushu Island are famous Japanese porcelains. The porcelain-techniques creating its elegant and bright red-color underglaze and overglaze were found and developed in 1650's (early Edo period) first by Kakiemon kiln. Red-color overglaze and transparent glaze of the Kakiemon-style porcelains have been investigated by means of X-ray diffraction using synchrotron radiation. The results suggest that the red-color brightness is mainly induced by micro-structural correlation between α-Fe2O3 fine particles, as red-color emission elements, and other oxides of SiO2, Al2O3, CaO, KNaO, PbO. The stability of the red-overglaze on the porcelain surface is related to interfacial fusion of the glasses existing in the fritted red-overglaze and the transparent glaze on the porcelain body. The ancient porcelain-techniques of the Kakiemon-style porcelains are clearly based on the micro-structural and material properties of the overglazes, the underglazes, and the transparent glazes, though the techniques were experimentally and accidentally found and developed in the Edo period.

Local structures and electronic band states of α−Fe2O3 polycrystalline particles in the glazes of the HIZEN celadons produced in the Edo period of Japan, by means of X-ray absorption spectra (II)

“…At the present, many Japanese celadon potters thought that fine air-bubbles in the celadon glaze contribute to a diffused reflection of blue-green light. Recently, we have studied the correlation between the red-colored brightness and the structural and electronic properties for the overglaze of the HIZEN colored porcelains, which were produced at Arita areas from the 17 th to 18 th century, by means of X-ray diffraction (XRD) and X-ray absorption spectrum (XAS), using synchrotron radiation [17][18][19]. In this paper, we study the geographical and historical correlations among the glaze-colors of the HIZEN celadons produced at Aita and Imari areas in the Edo period.…”

Controlling the Color of Lead-Free Red Overglaze Enamels and a Process for Preparing High-Quality Red Paints

“…In the early 18th century, a high-quality red pigment (Fukiya bengala) was developed in Japan and used by pottery producers throughout Japan, such as in Arita, Kutani, and Kyoto. − However, manufacturing of Fukiya bengala was prohibited by an antipollution law in 1970, eliminating this pigment from the market. Recently, we analyzed existing Fukiya bengala in detail and found that its main component is fine hematite particles containing 1 mol % Al .…”

“…Here we define “high quality”, “beautiful”, or “vivid” akae as akae with high L *, a *, and b * values on the CIE 1976 color space . For example, Fukiya bengala, − a red pigment produced in Japan in the 18th century, has values of L * = 41.6, a * = 34.6, and b * = 27.5 . Then, similar and slightly higher values are considered to be “high quality”.…”

Well-Dispersed α-Fe2O3Particles for Lead-Free Red Overglaze Enamels through Hydrothermal Treatment

“…Although leaded glass frit with low melting points is conventionally used in traditional akae porcelain, the use of glass frit containing lead is now regulated owing to concerns for human health and the environment. In addition, the high-quality red pigment Fukiya bengala, ,− which had the largest market share in Japan, went out of use when antipollution laws came into effect in the 1970s. The porcelain industry has since been seeking new lead-free frit and high-quality hematite pigments.…”