磁器中の微量炭素定量と磁器の透光度

概要

論文の詳細を見る
The carbon content in porcelain was determined by the application of the micromethod proposed by M. H. Kalina and T. L. Joseph (Blast Furnace and Steel Plant, 1939, 345-351) for carbon in steel. Specimens of porcelain were powdered to pass 130 mesh per inch and fused with red lead in a platinum boat in a current of oxygen. The carbon dioxide evolved was absorbed with barium hydroxide solution. Excess barium hydroxide was titrated back.As a measure of translucency, the extinction coefficient of porcelain thin plate was measured by a Hartmann microphotometer.A few examples of the measured results are shown in the following.Specimens were taken out from several parts of a working tunnel kiln. The water absorption and the carbon content of these specimens were measured. The results are shown in Fig. 3 (I&II). It was shown that the carbon content of specimens fired the range of 900° to 1000°C was about 0.03%, and it was reduced to about 0.01% before the beginning of the vitrification.
社団法人日本セラミックス協会の論文