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Details of Grant 

EPSRC Reference: GR/R46779/01
Title: J-phase toughening of nitrogen ceramics
Principal Investigator: Thompson, Professor D
Other Investigators:
Researcher Co-Investigators:
Project Partners:
International Syalons (Newcastle) Ltd
Department: Chemical Engineering & Advanced Material
Organisation: Newcastle University
Scheme: Standard Research (Pre-FEC)
Starts: 01 July 2001 Ends: 30 June 2004 Value (£): 241,741
EPSRC Research Topic Classifications:
Materials Characterisation Materials Synthesis & Growth
EPSRC Industrial Sector Classifications:
Aerospace, Defence and Marine Construction
Related Grants:
Panel History:  
Summary on Grant Application Form
Recent research at Newcastle on phase relationships in the Dy-Si-Al-O-N system (9) has shown that betweent he structurally analogous cuspidene-type compounds J-phase (dy(4)Si(2)O(7)N(2) and Dy-YAM (Dy(4)A(2)O(9), the previously-supposed line of continuous solid solution bwetween them is in fact broken up into 5 slightly different cuspidine structural modeifications at different compositions inthe range. Moreover, Shimada and colleagues (3-8) have shown that the end member and several related analogues have low and high-temperature strucural forms, both of the cuspidene tupe for which the lower temperature form has the higher volume.
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Organisation Website: http://www.ncl.ac.uk