Microstructural observation of ZrO2 scales formed by oxidation of ZrC single crystals with formation of carbon

被引：27

作者：

Shimada, S ^{[1
]}

机构：

[1] Hokkaido Univ, Fac Engn, Dept Appl Chem, Sapporo, Hokkaido 060, Japan

来源：

SOLID STATE IONICS | 1997年 / 101卷

关键词：

microstructure; zirconia scale; oxidation; carbon formation;

D O I：

10.1016/S0167-2738(97)00326-3

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：

Microstructure of cubic-ZrO2 (c-ZrO2) scale formed by oxidation of ZrC single crystals at 600 degrees C under an oxygen pressure of 2.6 kPa was observed by backscattered electron imaging in SEM and high resolution transmission electron microscopy equipped with EDX. The oxide scale was divided into two subscales, zones 1 and 2. It was revealed that an amorphous, carbon-rich phase 10 to 20 nm in width is formed near the interface between ZrC and zone 1 and that c-ZrO2 crystallites of 2 to 10 nm in size exist away from the interface in zone 1 while some growth of c-ZrO2 crystallites occurs in zone 2.

引用

页码：749 / 753

页数：5

共 4 条

[1]

BARNIER P, 1988, EUR J SOL STATE INOR, V25, P495

[2]

DUFOUR LC, 1967, CR ACAD SCI C CHIM, V265, P171

[3] OXIDATION-KINETICS OF ZIRCONIUM CARBIDE AT RELATIVELY LOW-TEMPERATURES [J].

SHIMADA, S ;

ISHII, T .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1990, 73 (10) :2804-2808

[4] FORMATION AND MICROSTRUCTURE OF CARBON-CONTAINING OXIDE SCALES BY OXIDATION OF SINGLE-CRYSTALS OF ZIRCONIUM CARBIDE [J].

SHIMADA, S ;

NISHISAKO, M ;

INAGAKI, M ;

YAMAMOTO, K .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 1995, 78 (01) :41-48

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