Published 1994 | Version v1
Journal article Metadata-only

Hot-pressed ceramics of ultradispersed composite powders

Creators

Description

Consideration is given to regularities of change of microstructure, phase composition, crystallinity degree and properties of hot-pressed ceramics, depending on the ratio of β and α phases of Si3N4 and Y2O3 content in ultradispersed composite powders in Si3N4-Y2O3 system. Increase of Y2O3 content in composite powders up to 15-18 % and decrease of β-Si3N4/α-Si3N4 phase ratio lead to change of composition of secondary crystal phases with growth of their refractoriness, to reduction of glass-phase content, increase of crystallinity degree and content of enlarged grains in ceramics structure

Additional details

Additional titles

Original title (Russian)
Горячепрессованная керамика из ультрадисперсных композиционных порошков

Publishing Information

Journal Title
Ogneupory
Journal Issue
no.2
Journal Page Range
p. 13-20.
ISSN
0369-7290
CODEN
OGNPA2

INIS

Country of Publication
Russian Federation
Country of Input or Organization
Russian Federation
INIS RN
26020029
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CERAMICS; COMPOSITE MATERIALS; CONCENTRATION RATIO; FRACTURES; HOT PRESSING; MICROSTRUCTURE; PHASE STUDIES; SILICON NITRIDES; SYNTHESIS; YTTRIUM OXIDES
Descriptors DEC
CHALCOGENIDES; CRYSTAL STRUCTURE; FABRICATION; FAILURES; MATERIALS; MATERIALS WORKING; NITRIDES; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PNICTIDES; PRESSING; SILICON COMPOUNDS; TRANSITION ELEMENT COMPOUNDS; YTTRIUM COMPOUNDS