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Ultrasonic Atomic Force Microscopy on Spray Dried Ceramic Powder

  • Chiaki Miyasaka
  • Bernhard R. Tittmann
Conference paper
Part of the Acoustical Imaging book series (ACIM, volume 27)

Abstract

Spray-dried ceramic powders (e.g., Al2O3) are composed of a plurality of granules, each of which includes ceramic particles and organic binders. It is assumed that the binders become concentrated in the surface layer of the granule in accordance with its type or its volume mixed into a ceramic portion of the granule. However, evidence to prove the assumption was limited because conventional microscopes were not able to clearly visualize the segregation. This paper presents a technique for imaging detailed structure of the spray-dried ceramic powders with the ultrasonic-atomic force microscope (UAFM). The distribution of binder vis-a-vis Al2O3> particles is highly resolved with good contrast. The distribution was confirmed by nano-indentation. Thus, the U-AFM is shown to be a useful diagnostic tool for the development of approaches to spray-dried process evaluation.

Keywords

Ceramic Powder Organic Binder Alumina Ceramic Conventional Microscope Toughness Index 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media Dordrecht 2004

Authors and Affiliations

  • Chiaki Miyasaka
    • 1
  • Bernhard R. Tittmann
    • 1
  1. 1.Department of Engineering Science and MechanicsThe Pennsylvania State UniversityUniversity ParkUSA

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