陶磁器からの鉛溶出に及ぼす水蒸気雰囲気焼成の効果

概要

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The effects of firing in a water Vapor atmosphere on lead leaching from porcelain tableware were investigated. The amount of lead leached out from the porcelain tableware fired in a water vapor atmosphere have decreased to about one-thirds compared with the porcelain tableware fired in air. Three straight lines appeared on the plot of the quantity of lead leached out from the porcelain tableware fired in air against the square root of leaching time. Number of straight lines on the plot of the quantity of lead leached out against square root of leaching time was decreased from three to two by firing in a water vapor atmosphere. These results were explained on the basis of the reaction occurred during firing in a water vapor atmosphere as follows. Lead in the surface layer of the porcelain tableware was released and the silica-rich layer which contains α-quartz was formed at the surface during firing in a water vapor atmosphere.
長岡工業高等専門学校の論文
1997-10-31