グラスライニング製放電電極用ガラスに関する検討

概要

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In this work, we studied the effect of various elements on the relative dielectric constant, ε_r, by adding 1-3 Mol% of an element to soda glass, 15Na_2O・15CaO・70SiO_2, the mother glass. The structure of the dielectric coating layer for the glass-lined discharge electrode was investigated in terms of the breakdown voltage and ε_r. It was found that most rare-earth elements (Pr. Lu, Eu, Gd, Sm) are more effective in increasing ε_r than other elements. From the viewpoint of the breakdown voltage of the glass-lined layer, it is desirable that a cover coating with a high ε_r is directly coated onto the base metal without using a ground coating with low ε_r, to obtain the optimum improvement effects. As the results of experiments, the 3CoO・3NiO・3MnO_2・3Pr_6O_<11>・30Bi_2O_3・20BaO・50B_2O_3 (mol%; CNMPBBB) glass was found to have a high ε_r of 16 and good adhesion with steel. CNMPBBB glass is highly promising for use in glass-lined discharge electrodes.
社団法人日本セラミックス協会の論文
1998-06-01