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Examining Impact of Particle Deagglomeration Techniques on Microstructure and Properties of Oxide Materials Through Nanoindentation

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Nanomechanical Analysis of High Performance Materials

Part of the book series: Solid Mechanics and Its Applications ((SMIA,volume 203))

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Abstract

Microstructure and properties of sintered components produced from nanoparticulate materials are critically dependent on degree of deagglomeration of particulates prior to their consolidation. While all nanoparticulate materials have an inherent tendency to agglomerate owing to attractive Van der Waals forces the impact of agglomeration on sintering behavior/sintered density of powder compacts and associated properties is significant. Although a lot of work has been carried out on developing approaches to deagglomeration of nanopowders it is a challenging task to evaluate the extent of deagglomeration by examining powder compacts. Microscopy of powders (TEM) or of compacts (SEM) is unable to provide any clear distinction between powders with different degrees of particulate agglomeration/deagglomeration. The present chapter cites two case studies from processing of dye sensitized solar cells and synthesis of nanocrystalline yttria stabilized zirconia (YSZ) powders respectively to illustrate that nanoindentation can be an effective way of characterizing the impact of deagglomeration approaches and the consequent deagglomeration extent on powders and compact characteristics. Electrical characterization of the titania based dye-sensitized solar cells, characteristics of green and sintered compacts prepared from synthesized nano YSZ powders are supported by observations from nanoindentation studies.

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Authors and Affiliations

  1. Metallurgical Engineering and Materials Science, IIT Bombay, Mumbai, India

    Sharanabasappa B. Patil, Ajay Kumar Jena & Parag Bhargava

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  1. Sharanabasappa B. Patil
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  2. Ajay Kumar Jena
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  3. Parag Bhargava
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Correspondence to Parag Bhargava .

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Editors and Affiliations

  1. Mechanical Engineering, University of Hawaii, Honolulu, USA

    Atul Tiwari

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Patil, S.B., Jena, A.K., Bhargava, P. (2014). Examining Impact of Particle Deagglomeration Techniques on Microstructure and Properties of Oxide Materials Through Nanoindentation. In: Tiwari, A. (eds) Nanomechanical Analysis of High Performance Materials. Solid Mechanics and Its Applications, vol 203. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-6919-9_12

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  • DOI: https://doi.org/10.1007/978-94-007-6919-9_12

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  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-007-6918-2

  • Online ISBN: 978-94-007-6919-9

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