Mössbauer Spectroscopic Study on Colorative Mechanism of Celadon Glaze

김종영,; 노형구,; 전아영,; 김응수,; 조우석,; 김경자,; 김진모,; 김철성,

doi:10.4191/kcers.2011.48.1.034

Cited by 5 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, as the sintering temperature is increased in the reducing atmosphere, the whiteness is increased, because Fe 2 O 3 is reduced to FeO. [5][6][7] The whiteness is the lowest when the sintering is completed. When the temperature is continuously increased beyond the sintering point, the whiteness is increased by the appearance of the glass phase.…”

Section: Chromaticitymentioning

confidence: 99%

Properties of Kaolinite as a Raw Material for Porcelain

Kim¹,

Hwang²

2019

J. Korean Ceram. Soc

Self Cite

View full text Add to dashboard Cite

In this work, we investigated kaolinite raw materials from China, Vietnam, and Seongju (Korea) used for the manufacture of porcelain products in Korea. According to chemical analysis results, for the kaolinites from Seongju, more feldspar components containing CaO, K 2 O, and Na 2 O are found than in those from China or Vietnam, of which the composition is close to that of pure kaolinite. Through X-ray Rietveld quantitative analysis, kaolinite and muscovite are found to be the main phases for all the raw materials. Halloysite, quartz, gibbsite, and andesine are found at more than 5% for KM-85 (China), LKC-60 (Vietnam), KC-009 (China), and WA (Seongju). Absorption rate is on order of LKC-60 < KC-009 < KM-85 < PA < WA, and the sample, sintered in reductive atmosphere, exhibits the lowest absorption rate. Comparing the color of the sintered samples, kaolinites of KM-85, LKC-60, and KC-009 (L * : 94-97%) show higher whiteness value than those of WA and PA (L * : 82-91%).

show abstract

Section: Chromaticitymentioning

confidence: 99%

Properties of Kaolinite as a Raw Material for Porcelain

Kim¹,

Hwang²

2019

J. Korean Ceram. Soc

Self Cite

View full text Add to dashboard Cite

show abstract

“…Glaze Colorations can be classified into three types using the Fe form (Hwang, 2008), i.e., ionic colorations (as in the celadon glaze), colloid colorations (as in the tenmoku glaze), and crystal colorations (as in the iron crystal glaze). Scientific analysis of the iron oxide phases during the coloring of a celadon glaze and iron glaze has been conducted using a Mössbauer spectrometer (Hwang, 2008;Jeon et al, 2011;Kim et al, 2010;Pyon, 2005). Raman spectroscopy analysis has also been carried out on Cheolwha Buncheong ware and blackware (Lim, 2013;Park, 2018).…”

Section: Introductionmentioning

confidence: 99%

A Preliminary Study on the Roles of Fe Content and Neoformed Ca-rich Minerals in the Coloration of Ceramic Glazes

2020

View full text Add to dashboard Cite

Iron oxides are the essential coloring oxides in traditional ceramic glazes. However, when Fe is involved in the coloration in the form of ions or colloids in glazes with low Fe content, it is difficult to identify the iron oxide phases. Generally, in many these glazes, Ca-rich minerals are observed by X-ray diffraction (XRD) or microscopic images, owing to their devitrification by the high Ca content. This study attempts to elucidate the correlation between the crystalline structure and coloration in the glazes while mainly focusing on neoformed Ca-rich minerals and Fe content. An experimental firing was carried out to produce tree ash glazes, with pine tree ash and Buyeo feldspar. In the case of oxidation glazes, the scanning electron microscopy (SEM) images and XRD patterns did not exhibit any Ca-rich crystals, and all the visible light reflectance spectra lines exhibited a similar shape. In contrast, the reduction glazes divided into blue glazes and other colored glazes according to the shapes of their reflectance spectra. It was confirmed that the influence of Ca-rich minerals on the glaze color was more pronounced than the blue color of the reduction glazes when the Ca and feldspar contents were sufficiently high and low, respectively, to form wollastonite. As the Ca content increased and the elemental composition of the reduction glazes changed, the neoformation of the Ca-rich minerals, such as wollastonite, anorthite, diopside, and akermanite was sequentially observed.

show abstract

“…[4] Additionally, ZnO maintains stable chemical and thermal properties during the hydrogen plasma sputtering process. The electrical and optical properties of TCO films have been enhanced by using ZnO films [5,6] In this report, therefore, we describe the effects of sputtering parameters on the electrical and optical properties of AZO thin films according to the thickness of Al content, and sputtering temperature.…”

Section: Introductionmentioning

confidence: 99%

A Study on the Physical Properties of AZO Films as Variation of Sputtering Conditions

Kim

et al. 2011

AMR

View full text Add to dashboard Cite

TCO (transparent conducting oxide) films are widely used as photoelectric devices in flat panel displays and solar cells. Until now, ITO (indium-tin oxide) films have been used as TCO films. However, with the increase in the cost of ITO films , researchers have been searching for new materials to use as TCO films .Transparent and conductive aluminum-doped zinc oxide films were prepared by DC magnetron sputtering at different substrate temperatures. The electric and optical properties of these films were studied by Hall measurement and optical spectroscopy, respectively. All of the films that were deposited at temperatures higher than 200 °C substrate temperature demonstrated over 80% transmittance in the range of the visible spectrum. Since the surface mobility of a particle is limited at a low temperature, the growth rate of AZO thin films would be higher than that at a high temperature. And the films showed minimum resistivity of 6.77 × 10-3Ω•cm at substrate temperature of 200 °C.

show abstract

Mössbauer Spectroscopic Study on Colorative Mechanism of Celadon Glaze

Cited by 5 publications

References 3 publications

Properties of Kaolinite as a Raw Material for Porcelain

Properties of Kaolinite as a Raw Material for Porcelain

A Preliminary Study on the Roles of Fe Content and Neoformed Ca-rich Minerals in the Coloration of Ceramic Glazes

A Study on the Physical Properties of AZO Films as Variation of Sputtering Conditions

Contact Info

Product

Resources

About