Objective This work has shown that the field of oxynitride glass ceramics is larger than originally thought, and that many new phases exist which merit further exploration. Whereas the properties of the materials explored in the present programme are at least comparable with current oxide glass ceramics, the present results show that further development of the newer glass ceramics studied in this programme may be beneficial.Novel glasses and glass-ceramics are under development for devices for use in opto-electronic, biomedical/chemical and thermal/mechanical applications in a wide range of high technology industries. The ease of shaping glasses and the possibility of controlling the crystallisation to produce glass-ceramics containing more refractory crystalline phases with low coefficients of thermal expansion offer significant advantages for fabrication. In addition, the occurrence of oxynitride glasses as grain boundary phases in silicon nitride based ceramics merits their further study ad materials in their own right and as the basis for production of oxynitride glass-ceramics. This proposal combines expertise in three member states to carry out the following objectives :1. Study of the formation and characteristics of oxynitride glasses (in M-Si-Al-O-N systems where M is Y or R.E.).2. Study of the effect of N and the rare earth cations on properties.3. Characterisation of the structure of the glasses using NMR,Raman scattering, XRD, EXAFS, and Neutron Diffraction.4. Optimisation of the nucleation and crystallisation of these glasses in order to develop glass-ceramics with tailored properties and beneficial microstructures.5. Use of the Knowledge acquired to optimise grain-boundary phases in nitrogen ceramics. Fields of science agricultural sciencesagriculture, forestry, and fisheriesagriculturegrains and oilseedsnatural scienceschemical sciencesinorganic chemistrymetalloidsengineering and technologymaterials engineeringceramics Programme(s) FP3-BRITE/EURAM 2 - Specific programme (EEC) of research and technological development in the field of industrial and materials technologies, 1990-1994 Topic(s) 1.3.2 - Ceramics, ceramic matrix composites and advanced glasses Call for proposal Data not available Funding Scheme CSC - Cost-sharing contracts Coordinator UNIVERSITY OF LIMERICK Address National technological park Limerick Ireland See on map EU contribution € 0,00 Participants (3) Sort alphabetically Sort by EU Contribution Expand all Collapse all University of Newcastle upon Tyne United Kingdom EU contribution € 0,00 Address NE1 7RU Newcastle upon tyne See on map Université de Limoges France EU contribution € 0,00 Address 123 avenue albert thomas 87060 Limoges See on map École Nationale Supérieure de Céramiques Industrielles de Limoges France EU contribution € 0,00 Address 47-73 avenue albert thomas 87065 Limoges See on map
