High temperature deformation behavior of crystallized precursor-derived Si-B-C-N ceramics

被引：20

作者：

Christ, M

Zimmermann, A

Zern, A

Weinmann, M

Aldinger, F

机构：

[1] Univ Stuttgart, Pulvermet Lab, Max Planck Inst Met Forsch, D-70569 Stuttgart, Germany

[2] Univ Stuttgart, Pulvermet Lab, Inst Nichtmet Anorgan Mat, D-70569 Stuttgart, Germany

来源：

JOURNAL OF MATERIALS SCIENCE | 2001年 / 36卷 / 24期

关键词：

D O I：

10.1023/A:1012991618775

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Annealing of amorphous precursor-derived Si-B-C-N ceramics for 3 h at 1800 degreesC in 15 bar nitrogen yielded a material consisting of SiC with a mean grain size of about 100 nm, embedded in a turbostratic B-C-N phase. The deformation behavior of this material was investigated by compression tests at 1400 degreesC in air. Dependent on the applied stress the strain rate decreased with time. The deformation rate consists of a stress dependent component that is proportional to the applied stress, which indicates that this part of the deformation mechanism is based on viscous flow. Furthermore, the influence of oxidation on the deformation behavior is investigated. (C) 2001 Kluwer Academic Publishers.

引用

页码：5767 / 5772

页数：6

共 21 条

[1]

An LA, 1998, J AM CERAM SOC, V81, P1349

[2]

Baldus HP, 1997, ANGEW CHEM INT EDIT, V36, P329

[3] High temperature deformation of precursor-derived amorphous Si-B-C-N ceramics [J].