Published 1994 | Version v1
Book Metadata-only

Modelling of devitrification kinetics in sintered silicon nitride ceramics

Creators

  • 1. Technical Univ. of Hamburg-Harburg, Advanced Ceramics Group, Hamburg (Germany)

Description

The mechanical properties of sintered silicon nitride ceramics at high temperatures are limited by a low viscous amorphous phase present in the grain boundaries of the crystalline silicon nitride matrix. An analytical model based on an energy consideration of the localized crystallization process was derived to describe the devitrification kinetics of small quantities of glass. Transformation induced elastic stress as well as limitations of the pocket and crystal geometries were taken into account to calculate the fraction of amorphous to crystalline transformation as a function of time. (orig.)

Part of:
Silicon nitride 93

Additional details

Publishing Information

Publisher
Trans Tech Publ.
Imprint Place
Aedermannsdorf (Switzerland)
ISBN
0-87849-668-8
Imprint Title
Silicon nitride 93
Imprint Pagination
782 p.
Journal Volume
89-91
Series
Key Engineering Materials.
Journal Page Range
p. 357-360.
ISSN
1013-9826
CODEN
KEMAEY

Conference

Title
International conference on silicon nitride-based ceramics.
Dates
4-6 Oct 1993.
Place
Stuttgart (Germany).

INIS

Country of Publication
Switzerland
Country of Input or Organization
Switzerland
INIS RN
25057741
Subject category
S36: MATERIALS SCIENCE;
Resource subtype / Literary indicator
Conference
Descriptors DEI
AMORPHOUS STATE; CERAMICS; CRYSTALLIZATION; GLASS; GRAIN BOUNDARIES; KINETICS; MECHANICAL PROPERTIES; MICROSTRUCTURE; SILICON NITRIDES; SINTERED MATERIALS; SINTERING; STRESSES; TEMPERATURE DEPENDENCE; VISCOSITY
Descriptors DEC
CRYSTAL STRUCTURE; FABRICATION; MATERIALS; NITRIDES; NITROGEN COMPOUNDS; PHASE TRANSFORMATIONS; PNICTIDES; SILICON COMPOUNDS

Optional Information