Effect of heat treatment on dielectric properties of X7R designated MLCs with Ni internal electrodes

被引：23

作者：

Shoji, H

Nakano, Y

Matsushita, H

Onoe, A

Kanai, K

Yamashita, Y

机构：

[1] Nippon Chemicon Corp, R&D Dept 2, Tokyo 198, Japan

[2] Toshiba Corp, Mat & Devices Res Lab, Saiwai Ku, Kawasaki, Kanagawa 210, Japan

来源：

JOURNAL OF MATERIALS SYNTHESIS AND PROCESSING | 1998年 / 6卷 / 06期

关键词：

MLC; X7R; Ni electrode; heat treatment; insulation resistance;

D O I：

10.1023/A:1021885006938

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The heat treatment of base-metal Ni electrode multilayer capacitors (MLCs) in air was investigated with a view to reducing manufacturing costs. This treatment was found to recover the insulation resistance in the same way as heat treatment under low oxygen partial pressure. At temperatures above 800 degrees C, heat treatment in air was associated with cracking as a result of volumetric expansion of Ni through oxidation. TG-DTA analysis revealed that the oxidation behavior of Ni electrodes in MLCs differs from that of Ni plates or Ni fine powder. The capacitance of 1.2 mu F MLCs in ELA 1206 size was successfully manufactured by the novel process.

引用

页码：415 / 418

页数：4