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Material Analysis by Ultrasonic Atomic Force Microscopy

Published online by Cambridge University Press:  01 February 2011

Chiaki Miyasaka ,
Lily Jia  and
Bernhard R. Tittmann
Chiaki Miyasaka
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, 227 Hammond Building, University Park, PA 16802, USA
Lily Jia
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, 227 Hammond Building, University Park, PA 16802, USA
Bernhard R. Tittmann
Affiliation:
Department of Engineering Science and Mechanics, The Pennsylvania State University, 227 Hammond Building, University Park, PA 16802, USA
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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 (U-AFM). 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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 627: Symposium BB – The Granular State , 2000 , BB1.8
Copyright
Copyright © Materials Research Society 2000

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References

REFERENCES

1. Lukasiewicsz, S. J., “Spray-Drying Ceramic Powders”, Journal of the American Ceramics Society, Vol. 72, No. 4, 1989, pp. 617–624 Google Scholar
2. Zhang, Y., Kawasaki, M., Ando, K., Kato, Z., Uchida, N. and Uematsu, K., “Surface Segregation of PVA during Drying of PVA-Water-Al2O3 Slurry”, Journal of the Ceramic Society of Japan, Vol. 100, No. 8, 1992, pp. 1070–1073 Google Scholar
3. Rabe, U., and Arnold, W., “Acoustic Microscopy by Atomic Force Microscopy”, Applied Physics Letters, Vol. 64, No. 12, 1994, pp. 1493–1495 Google Scholar
4. Gao, W., Tittmann, B. R., and Miyasaka, C., “Contrast Mechanism of Ultrasonic-Atomic Force Microscope”, presented at IEEE 1999 Ultrasonic Symposium (1999)Google Scholar
5. Jia, L., Mandanas, M., Miyasaka, C, Tittmann, B. R., and Messing, G.L., “Analysis of Organic Binder Distribution in Spray Dried Granules by Ultrasonic-Atomic Force Miceroscopy,” Proceedings of SPIE's International Symposium on Nondestructive Evaluation Techniques for Aging Infrastructure & Manufacturing, 1999, pp. 270–281 Google Scholar
6. Bhardwaj, M. C., “Nondestructive testing of green ceramics by contact-free ultrasound”, ULTRAN's sales materials.Google Scholar