Aqueous dispersion characteristics of PMN-PT powder prepared by partial oxalate route-Reference-Cited by-同舟云学术

Aqueous dispersion characteristics of PMN-PT powder prepared by partial oxalate route

Published:2009-04 Issue:3 Volume:108 Page:145-148
ISSN:1743-6753
Container-title:Advances in Applied Ceramics: Structural, Functional and Bioceramics
language:en
Short-container-title:Advances in Applied Ceramics: Structural, Functional and Bioceramics

Author:

Prabhakaran K.¹,Jayasingh E. M.¹,Raghunath S.¹,Durgaprasad C.¹,Sharma S. C.¹

Affiliation:

1. Naval Materials Research Laboratory, Addl. Ambernath, Thane 421 506, India

Abstract

Aqueous dispersion of PMN-PT powder prepared by partial oxalate process has been studied using ammonium poly(acrylate) dispersant. Parameters such as dispersant concentration and pH to achieve well dispersed suspensions have been determined by measurement of viscosity and gravitational sediment density. Suspension with PMN-PT powder loading in the range of 50 to 58 vol.-% showed very low viscosity in the range of 0·125–0·325 Pa s at a shear rate of 93 s−1. The suspensions are shear thinning and obey Casson model. PMN-PT powder suspensions of solids loading in the range of 50 to 58 vol.-% showed yield stress in the range of 0·625 to 9·5 Pa respectively. The green body prepared by casting the suspensions in an open mould followed by drying in air showed high density (63·4% TD) and narrow pore size distribution with a median pore size of 0·14 μm.

Publisher

SAGE Publications

Link

http://journals.sagepub.com/doi/pdf/10.1179/174367613X13789812363902

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