Material Analysis by Ultrasonic Atomic Force Microscopy

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.

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References

  1. 1.

    S. J. Lukasiewicsz, “Spray-Drying Ceramic Powders”, Journal of the American Ceramics Society, Vol. 72, No. 4, 1989, pp. 617–624

    Article  Google Scholar 

  2. 2.

    Y. Zhang, M. Kawasaki, K. Ando, Z. Kato, N. Uchida and K. Uematsu, “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

    CAS  Article  Google Scholar 

  3. 3.

    U. Rabe, and W. Arnold, “Acoustic Microscopy by Atomic Force Microscopy”, Applied Physics Letters, Vol. 64, No. 12, 1994, pp. 1493–1495

    Article  Google Scholar 

  4. 4.

    W. Gao, B. R. Tittmann, and C. Miyasaka, “Contrast Mechanism of Ultrasonic-Atomic Force Microscope”, presented at IEEE 1999 Ultrasonic Symposium (1999)

    Google Scholar 

  5. 5.

    L. Jia, M. Mandanas, C Miyasaka, B. R. Tittmann, and G.L. Messing, “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. 6.

    M. C. Bhardwaj, “Nondestructive testing of green ceramics by contact-free ultrasound”, ULTRAN’s sales materials.

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Correspondence to Chiaki Miyasaka.

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Miyasaka, C., Jia, L. & Tittmann, B.R. Material Analysis by Ultrasonic Atomic Force Microscopy. MRS Online Proceedings Library 627, 18 (2000). https://doi.org/10.1557/PROC-627-BB1.8

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