SILICON-CARBIDE/BORON-CONTAINING COATINGS FOR THE OXIDATION PROTECTION OF GRAPHITE

被引：86

作者：

FERGUS, JW ^{[1
]}

WORRELL, WL ^{[1
]}

机构：

[1] UNIV PENN,DEPT MAT SCI & ENGN,PHILADELPHIA,PA 19104

来源：

CARBON | 1995年 / 33卷 / 04期

关键词：

GRAPHITE; SILICON CARBIDE; COATINGS; OXIDATION; BORON;

D O I：

10.1016/0008-6223(94)00178-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silicon carbide with its excellent oxidation resistance and chemical compatibility with carbon is an attractive coating material for the high-temperature oxidation protection of graphite and carbon-carbon composites. One of the major challenges in the development of protective SiC coatings is preventing oxidation of the graphite substrate due to crack formation in the SiC coating. A boron-containing inner layer can prevent significant oxidation through cracks in a SiC outer layer in I atm oxygen for up to nine days at 1500 degrees C. The consistency of the oxidation protection is sensitive to the quality and uniformity of the coatings.

引用

页码：537 / 543

页数：7

共 43 条

[1] CHEMICAL VAPOR-DEPOSITION IN THE BORON-CARBON-NITROGEN SYSTEM [J].