Oxidation-resistant ZrB2-SiC composites at 2200 °C

被引：303

作者：

Han, Jiecai ^{[1
]}

Hu, Ping ^{[1
]}

Zhang, Xinghong ^{[1
]}

Meng, Songhe ^{[1
]}

Han, Wenbo ^{[1
]}

机构：

[1] Harbin Inst Technol, Ctr Composite Mat, Harbin 150001, Peoples R China

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2008年 / 68卷 / 3-4期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金;

关键词：

ultra-high-temperature ceramic (UHTC); ZrB2; SiC; oxidation resistance;

D O I：

10.1016/j.compscitech.2007.08.017

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Oxidation resistance tests were carried out on hot-pressed Zi-B-2-20 vol%SiC using an oxyacetylene torch. The temperature of the oxidized specimens exceeded 2200 degrees C. The mass and linear oxidation rates of the ZrB2-20 vol%SiC composites for 10 min were -0.23 mg/s and 0.66 mu m/s, respectively. The surface layer appeared dense and adherent with the exception of a few burst bubbles and craterlets. No macro-cracks or spallation were detected after oxidation, suggesting that these composites possess a super oxidation resistance. The microstructure of the surface and cross-section of the oxidized specimens were studied by scanning electron microscopy along with energy dispersive spectrometry and X-ray diffraction. The oxidation mechanism was also discussed. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：799 / 806

页数：8

共 16 条

[11] The thermal stability in air of hot-pressed diboride matrix composites for uses at ultra-high temperatures [J].

Monteverde, F .

CORROSION SCIENCE, 2005, 47 (08) :2020-2033

[12] Microstructure and properties of an HfB2-SiC composite for ultra high temperature applications [J].

Monteverde, F ;

Bellosi, A .

ADVANCED ENGINEERING MATERIALS, 2004, 6 (05) :331-336

[13] Oxidation of ZrB2-based ceramics in dry air [J].

Monteverde, F ;

Bellosi, A .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2003, 150 (11) :B552-B559

[14] Oxidation-based materials selection for 2000°C plus hypersonic aerosurfaces:: Theoretical considerations and historical experience [J].

Opeka, MM ;

Talmy, IG ;

Zaykoski, JA .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (19) :5887-5904

[15]

Opila EJ, 2001, CERAM ENG SCI PROC, V22, P221

[16] The hypersonic environment: Required operating conditions and design challenges [J].

Van Wie, DM ;

Drewry, DG ;

King, DE ;

Hudson, CM .

JOURNAL OF MATERIALS SCIENCE, 2004, 39 (19) :5915-5924

← 1 2 →