DEVELOPMENT OF CERAMIC AND CERAMIC COMPOSITE MATERIALS FOR STRUCTURAL APPLICATIONS AT HIGH TEMPERATURES WITH IMPROVED CREEP RESISTANCE, CHEMICAL STABILITY AND RELIABILITY

Objective

Project partners were not able to achieve their objectives - of forming through a ceramic bushing. While ceramics have good properties at high temperature in isothermal furnaces, they are not yet robust enough to meet the rigorous conditions imposed by the manufacturing of glass fibre. Therefore, no single ceramic is yet versatile enough to act as a substitute for platinum.

An improvement of the creep properties of zircon-based materials and of ZFME has been achieved, to the detriment of their corrosion behaviour.
THE USE OF THERMO-MECHANICAL CERAMICS IN CRITICAL, HIGH TEMPERATURE, STRUCTURAL APPLICATIONS IS CURRENTLY HINDERED BY A COMBINATION OF FACTORS DEPENDING ON THE TYPE OF CERAMIC MECHANICAL DEGRADATION, ENVIRONMENTAL DEGRADATION AND RELIABILITY.

OXIDE CERAMICS POSSESS THE BEST RESISTANCE TO ENVIRONMENTAL DEGRADATION COMPARED WO NON-OXIDE CERAMICS. ALTHOUGH THE LATTER CAN CURRENTLY EXHIBIT BETTER RESISTANCE TO MECHANICAL DEGRADATION. RECENT RESEARCH IN EUROPE HAS INDICATED THAT OXIDE-MATRIX CERAMIC COMPOSITES CAN ALSO POSSESS IMPROVED RESISTANCE TO HIGH-TEMPERATURE MECHANICAL DEGRADATION.

THE PROPOSED RESEARCH WILL THUS BE DIRECTED TOWARDS THE DEVELOPMENT OF NEW OXIDE-BASED CERAMICS AND CERAMIC COMPOSITES FOR STRUCTURAL APPLICATIONS AT ELEVATED TEMPERATURES:
1) CERAMIC SYSTEM DESIGN AND CHARACTERIZATION OF MECHANICAL PROPERTIES AT ELEVATED TEMPERATURES.
2) DETERMINATION OF STRUCTURAL RELIABILITY BY MEANS OF SOPHISTICATED NON-DESTRUCTIVE EVALUATION TECHNIQUES TOGETHER WITH MECHANICAL CHARACTERIZATION BASED ON MATERIAL FLAWS.
3) CHARACTERIZATION OF MATERIALS DEGRADATION IN CORROSIVE ENVIRONMENTS AT HIGH TEMPERATURES.
4) DEVELOPMENT OF DESIGN CRITERIA AND PROCESSING PROCEDURES SPECIFIC TO THE MANUFACTURE OF HIGH-TEMPERATURE STRUCTURAL PARTS.
5) DEMONSTRATION OF THE POTENTIAL OF THE CERAMICS AND PROCESSING PROCEDURES DEVELOPED BY THE PROPOSED RESEARCH IN A CRITICAL, HIGH-TEMPERATURE APPLICATION CURRENTLY SATISFIED BY A COSTLY STRATEGICALLY IMPORTANT METAL.

Programme(s)

• FP1-BRITE - Multiannual research and development programme (EEC) in the fields of basic technological research and the applications of new technologies (BRITE), 1985-1988

Funding Scheme

CSC - Cost-sharing contracts

Coordinator

Vetrotex International SA

Address

Quai Des Allobroges 767
73009 Chambéry
France

Participants (6)

CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS

Spain

Address

Calle Serrano 117
Madrid

Cerámicas Tenaces

Spain

Address

28906 Madrid

FEDERAL INSTITUTE FOR MATERIAL RESEARCH AND TESTING

Germany

Address

87,Unter Der Eichen 87
12205 Berlin

Institut National des Sciences Appliquées de Lyon (INSA)

France

Address

20 Avenue Albert Einstein
69621 Villeurbanne

José Antonio Lomba Camina SA

Spain

Address

36780 La Guardia

Norton Desmarquest Fine Ceramics SA

France

Address

18 Avenue D'alsace
92400 Courbevoie