Microstructure and properties of an HfB2-SiC composite for ultra high temperature applications

被引：114

作者：

Monteverde, F ^{[1
]}

Bellosi, A ^{[1
]}

机构：

[1] CNR, Inst Sci & Technol Ceram, I-48018 Faenza, Italy

来源：

ADVANCED ENGINEERING MATERIALS | 2004年 / 6卷 / 05期

关键词：

D O I：

10.1002/adem.200400016

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An ultra-high-temperature ceramic (UHTC) based on HfB2 was produced. The microstructure consisted of fine and regular diboride grains (2 μm average size), with SiC particulate distributed intergranularly, not rarely in clustered formation, and low levels of secondary phases were identified. The resulting thermo-mechanical properties proved interesting results for microhardness and fracture toughness. The microstructural alteration experienced within the explored temperature range renders the material unsuitable for service in extreme conditions of temperature and-pressure.

引用

页码：331 / 336

页数：6