Abstract:
The present invention relates to a method for manufacturing celadon using Mossbauer spectroscopy according to decisions on plasticity atmosphere conditions of pottery chromacity and, more specifically, to a method for manufacturing celadon using Mossbauer spectroscopy according to decisions on plasticity atmosphere conditions of pottery chromacity which: measures quantitative ionic valency of Fe ions on a ceramic glaze layer using the Mossbauer spectroscopy having 10^-12eV of accuracy in order to decide accurate ion ratio of the Fe metals in Fe^2+ and Fe^3+ produced by reduction reaction of a ceramic glaze layer during a high temperature reduction firing process; gives accurate reduction intensity of the celadon by quantitavely suggesting the reduction intensity according to the amount of LPG gas which is reduction firing gas; quantitavely suggests a decision method of the reduction firing condition which manufactures according to celadon green of the celadon by measuring data of chromacity (L*,a*,b*) of the glaze layer according to the firing reduction condition of the pottery and suggesting quantitative reduction firing condition of the Fe ionic valency and the chromacity; quantitatively controls the Fe ionic valency through reduction firing condition adjustment by a manufacturer; and manufactures desired colored celadon. [Reference numerals] (AA) Step of primary heating white porcelain testing piece in furnace while increasing 3°C per minute from room temperature to 900°C; (BB) Step of cooling the primarily heated white porcelain testing piece from 900°C to room temperature after maintaining at 900°C for one hour; (CC) Step of mixing glaze with the cooled white porcelain testing piece and coating the white porcelain testing piece with the glaze with a density of 1-2 g/cc; (DD) Step of secondary heating the glaze coated white porcelain while increasing 3°C per minute from room temperature to 900°C in the furnace; (EE) Step of tertiary heating the secondarily heated white porcelain while increasing 1°C per minute from 900°C to 1260°C in the furnace which supplies 0-35L/min of LPG gas which is reduction gas and 7L/min of air; (FF) Step of cooling the tertiarily heated white porcelain from 1260°C to room temperature after maintaining at 1260°C for one hour
Abstract:
본 발명은 뫼스바우어 분광법을 이용한 도자기 색도의 소성분위기 조건결정에 따른 청자 제조방법에 관한 것으로서, 더욱 상세하게는 10 -12 eV 의 정확도를 가지는 뫼스바우어 분광법을 이용하여 도자기 유약 층의 정량적인 Fe이온의 이온가를 측정함으로써, 고온의 소성환원과정에서 도자기 유약 층에서 환원반응에 의해 생성되는 Fe 2 + 와 Fe 3 + 의 정확한 Fe금속의 이온 비를 결정할 수 있고, 소성 환원가스인 LPG 가스 량에 따른 환원도를 정량적으로 제시함으로써, 보다 정확한 청자의 환원도를 알 수 있으며, 도자기의 소성환원조건에 따라 유약 층의 색도( L *, a *, b *)를 데이터를 측정하여 Fe이온가와 색도와의 정량적인 소성 환원분위기를 제시함으로써, 청자의 비색에 따른 제조하는 소성환원분위기의 결정방법을 정량적으로 제시할 수 있고, 제조자가 소성환원분위기 조절을 통해 Fe이온가를 정량적으로 조절이 가능함은 물론 원하는 비색의 청자를 제조할 수 있는 효과가 있다.
Abstract:
PURPOSE: A method using Mossbauer spectroscopy for classifying manufacturing conditions of excavated Goryeo celadon is provided to measure an ion change which is interactive between a glaze layer and a basis material layer and to suggest a quantitative firing reduction atmosphere of a Fe ionic valency, thereby suggesting a quantitative firing reduction atmosphere determination method and a standardized Goryeo celadon manufacturing method. CONSTITUTION: A method using Mossbauer spectroscopy for classifying manufacturing conditions of excavated Goryeo celadon includes the following steps of: separating the excavated Groyeo celadon into a glaze layer and a basis material layer and grinding samples of the glaze layer and the basis material layer; packing the ground samples of 20-50 mg by surrounding with a silver foil tape to be in a size of one inch; acquiring Mossbauer spectra from the packed samples of the glaze layer and the basis material layer with Mossbauer spectroscopy equipment respectively; analyzing the Mossbauer spectra with a line and quadruple and classifying the analyzed Mossbauer spectra into a ferrous ion and a ferric ion according to the movement of isomers; calculating a Fe ion rate of the glaze layer to the basis material layer by dividing the glaze layer and the basis material layer, which are classified by the relative rate of the classified ferrous ion and ferric ion, by the Fe ion rate and charting the same on a graph using two point indexes of the ferrous ion and the ferric ion in respect to one Goryeo celadon sample; calculating a relative reduction value by dividing the point index of the ferrous ion by the point index of the ferric ion and filling the relative reduction value on the graph with numbers; and classifying relative reduction values as similar groups by classifying the relative reduction values by similar reduction conditions. [Reference numerals] (AA) Step of separating the excavated Groyeo celadon into a glaze layer and a basis material layer and grinding samples of the glaze layer and the basis material layer; (BB) Step of packing the ground samples of 20-50 mg in a size of one inch by surrounding the samples with a silver foil tape; (CC) Step of acquiring Mossbauer spectra from the packed samples of the glaze layer and the basis material layer with Mossbauer spectroscopy equipment respectively; (DD) Step of analyzing the Mossbauer spectra with a line and quadruple and classifying the analyzed Mossbauer spectra into a ferrous ion and a ferric ion according to the movement of isomers; (EE) Step of calculating and making a graph of a Fe ion rate of the glaze layer to the basis material layer by dividing the glaze layer and the basis material layer, which are classified by the relative rate of the classified ferrous ion and ferric ion; (FF) Step of charting the same on a graph using two point indexes of the ferrous ion and the ferric ion in respect to one Goryeo celadon sample; (GG) Step of calculating a relative reduction value by dividing the point index of the ferrous ion by the point index of the ferric ion and filling the relative reduction value on the graph with numbers; (HH) Step of classifying relative reduction values as similar groups by classifying the relative reduction values by similar reduction conditions