Surface characteristics and electrical breakdown of alumina materials

被引：13

作者：

Michizono, Shinichiro ^{[1
]}

Saito, Yoshio

Suharyanto

Yamano, Yasushi

Kobayashi, Shinichi

机构：

[1] High Energy Accelerator Res Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[2] Gadjah Mada Univ, Dept Elect Engn, Yogyakarta 55281, Indonesia

来源：

VACUUM | 2007年 / 81卷 / 06期

关键词：

secondary electron; high temperature; insulator; alumina;

D O I：

10.1016/j.vacuum.2005.11.058

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electrical breakdown of alumina materials is one of the difficulties in higher electric field applications. This breakdown takes place due to localized excess heating, which is induced by surface defects, multipactor, and surface discharge. These factors were evaluated for several commercial alumina ceramics using a scanning electron microscope and comparing these observations with high-power rf transmission tests. The results indicate that alumina ceramics without F-center defects and lower surface charging are feasible for higher electric field operation. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：762 / 765

页数：4

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