蛍光体又はナトリウムランプを利用したグラスライニングにおけるにじみ検査方法

概要

論文の詳細を見る
Concerning the pull-through defect, which is a sort of defect of the glass-lining, the following two inspection methods were investigated. One inspection method is to detect the fluorescent pull-through defect by adding a fluorescent substance to the ground coat. Another inspection method is to detect the difference in color between the pull-through defect and the cover coat under a sodium lamp, as a monochromatic light source. This latter method utilizes the difference in the absorption coefficient of the light of the sodium lamp between the pull-through defect and the cover coat. In case of the luminescence substance addition, the fluorescence is not detected after 3-h firing and the cost of products increases 20% because of the expensive luminescence substance. Therefore it is difficult to apply the luminescence substance addition to the inspection method. In case of the phosphor addition, the fluorescence is detected after long firing and the cost of products increases under 0.5%. In case of using the sodium lamp, it is necessary to take the conventional light source or 450 nm monochromatic light source together with the sodium lamp to distinguish between the pull-through defect and a large bubble. The phosphor addition and the sodium lamp utilization are useful as a pull-through defects inspection method.
社団法人日本セラミックス協会の論文
1999-07-01