Patent KR-101303176-B1 (KR)
Title: Manufacturing condition discretion method of excavated koryo celadon relics using the mspectroscopy
Inventor: KIM CHUL SUNG
IPC: G01N33/38
Filed: 2012-07-02
Granted: 2013-09-17
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