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Details of Grant 

EPSRC Reference: GR/M12001/01
Title: HIGH CAPACITY SPRAY PYROLYSIS ROUTE FOR THE PRODUCTION OF SUB-MICRON PZT POWDERS FOR THICK-FILM APPLICATIONS
Principal Investigator: Milne, Dr SJ
Other Investigators:
Hampartsoumian, Dr E Brydson, Professor RMD
Researcher Co-Investigators:
Project Partners:
Morgan Matroc Oxley Developments Co Ltd
Department: Institute of Materials Research
Organisation: University of Leeds
Scheme: Standard Research (Pre-FEC)
Starts: 01 May 1999 Ends: 30 April 2002 Value (£): 210,232
EPSRC Research Topic Classifications:
Particle Technology
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
Spray pyrolysis, SP, in contrast to most wet-chemical routes, has the potential to produce chemically homogeneous ceramic starting powders on an industrial scale, but using existing commercially practicable pressure atomisation techniques, particle sizes are too large for direct use in high-grade technical ceramic processing. In preliminary work initiated to test the feasibility of reducing particle size by engineering improved twin fluid atomisation systems, we have demonstrated that it is possible to produce zirconia powders with an average particle size, d(av) = 0.5 um. This is the smallest particle size ever reported for pressure atomisation-spray pyrolysis. There is a technological demand from UK manufacturers of miniaturised actuators and sensors to develop a cost-effective method for synthesising PZT powders with this d(av) value but with a lower d(max) of 1-2 um, than has been achieved so far. We propose a practicable method for achieving this. The new powders would enable a major reduction in the thickness of PZT layers fabricated by screen printing and tape casting, the target being 5-10 um. Internationally it is projected that reducing the layer thickness of multilayer devices will be one of the main challenges facing the electronic ceramics industry over the next 2-5 years.
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Organisation Website: http://www.leeds.ac.uk