ThO_2-ZrO_2-Y_2O_3系焼結体の高温電導性 : 酸化物発熱体に関する研究(第1報)

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The electrical conductivity of the systems ThO_2-ZrO_2,ThO_2-Y_2O_3 and ThO_2-stabilized ZrO_2 were measured covering the temperature range 400℃〜1400℃ by d.c. two terminal technique in order to develop oxide-resistor elements, whose low activation energy of conduction would give the materials allowing easier furnace operation. The influence of activation energy on the auxiliary heating temperature of the furnace was discussed. ThO_2-ZrO_2 gave low activation energy of 0.56〜0.65 e.V. while ThO_2-Y_2O_3 and ThO_2-stabilized ZrO_2 gave the higher values, namely, 1.04〜1.16 e.V. and 1.38〜1.46 e.V, respectively. The possibility of using ThO_2-ZrO_2 for developing oxide-resister heating elements was discussed. (Received Oct. 5,1962)
社団法人日本セラミックス協会の論文
1963-03-01