Pb(Mg1/3Nb 1/3)O3-PbTiO3 Nano-powders by Continuous Attrition Milling for Ceramic Texturing

Mai PhamThi 1Erling Ringgaard 2Annette F. Pedersen 2

1. Thales Research & Technology (Thales TRT), Domaine de Corbeville, Orsay 91404, France
2. Ferroperm Piezoceramics A/S, Hejreskovvej 18A, KvistgƄrd, Denmark

Abstract

Ceramic texturing via Template Grain Growth (TGG) consists in orientating a number of large anisotropic template particles in an ultrafine particle matrix in the green state by tape casting. During sintering, densification of the matrix followed by grain growth consumes the surrounding matrix grains and creates a crystallographically oriented ceramic. Reactivity of the ceramic matrix is the key condition during grain growth. Therefore, large batches of nanopowders are necessary for the textured ceramic process. This work presents the industrial preparation of PMN-PT nano-particles by using the Labstar instrument. PMN-PT powder was synthesized via the columbite precursor method by calcination of oxide precursors at 1050C, mixing and milling with PbO and TiO2 and re-calcining at 800C to form the perovskite powder. Ultrafine and nano-powders were prepared by using attrition milling. Conventional attrition and continuous attrition milling will be performed and compared. Nano-powders will be characterized by TEM, XRD and specific surface area. Influence of grain size on relaxor ceramic properties will be presented

 

Presentation: oral at E-MRS Fall Meeting 2004, Symposium G, by Mai PhamThi
See On-line Journal of E-MRS Fall Meeting 2004

Submitted: 2004-05-24 15:57
Revised:   2009-06-08 12:55