Skip to main content

ORGANOMETALLIC PRECURSORS FOR THE PREPARATION OF HIGH PERFORMANCE NON-OXIDE CERAMICS AND CERAMIC-MATRIX COMPOSITES

Objective


The proposal is concerned with 4 principal lines of research:
the synthesis of polymeric, organometallic precursors with a high ceramic yield and the study of their pyrolysis and conversion to ceramic;
the direct conversion of the precursors into dense ceramic materials;
the use of precursors as an interparticulate bond as well as acting as an injection moulding binder in the fabrication of pressureless sintered silicon nitride;
the infiltration of precursors into unidirectional, 2-dimensional and 3-dimensional fibres, preforms to fabricate carbonitride bonded fibre composites.

A small pilot plant has been built to produce 5 to 6 kg of ceramic precursor per batch. A fusible solid precursor has been developed for the injection moulding phase. Dense ceramics have been successfully produced from pressed, crosslinked ceramic precursor powders. Work is underway on the fabrication of pressureless sintered silicon nitride using precursors and the injection of fabric preforms by precursors.
This proposal is concerned with four principal lines of research:
-the synthesis of polymeric, organometallic precursors with a high ceramic yield and the study of their pyrolysis and conversion to ceramic
-the direct conversion of the precursors into dense ceramic materials
-the use of precursors as an interparticulate bond as well as acting as an injection-moulding binder in the fabrication of pressureless-sintered silicon nitride
-the infiltration of precursors into unidirectional, 2D and 3D fibres, preforms to fabricate carbonitride-bonded fibre composites.

Coordinator

Fairey Tecramics Ltd
Address
Filleybrooks Stone
ST15 0PU Stafford
United Kingdom

Participants (3)

Atochem SA
France
Address
4 Cours Michelet
92091 Paris La Défense
Brochier SA
France
Address
33 Avenue Franklin Roosevelt
69150 Décines-charpieu
Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
Germany
Address
Seestraße 92
70174 Stuttgart