Skip to main content Accessibility help
×
Home

Homogeneity, Anisotropy, and Texture In Si3n4 Ceramics made by Fused Deposition

  • S. Rangarajan (a1), I. Pozsgai (a1), J. McIntosh (a1), R. McCuiston (a1), B. L. Harper (a1), N. Langrana (a1), A. Safari (a1), S. C. Danforth (a1), R. B. Clancy (a2), C. Gasdaska (a2) and P. J. Whalen (a2)...

Abstract

The Fused Deposition of Ceramics (FDC) process is an extrusion based layered manufacturing technique. In this study, the microstructural and property homogeneity of GS44-Si3N4 parts made by FDC is examined. The feedstock, green, and sintered parts were examined using characterization techniques such as optical and scanning electron microscopy, x-ray radiography, and x-ray diffraction. In addition, mechanical properties (σf, and Klc), shrinkage, and warpage results were used to characterize the FDC parts. It was found that by using proper build parameters and tool paths, dense, homogenous, near-net-shape GS44-Si3N4 parts can be fabricated. While the mechanical properties of these parts are shown to be isotropic, there is some degree of texturing detected with XRD. Si3N4 filament feedstock intentionally textured with 5.5 vol% of β-seed particles has also been made.

Copyright

References

Hide All
1. Comb, J. W. and Priedeman, W. R. in Solid Freeform Fabrication Proceedings, 4, edited by Marcus, H. L., Beanman, J. J., Barlow, J. W., Bourell, D. L. and Crawford, R. H., Austin, TX, pp. 8691 (1992).
2. U. S. Patent No. 5, 121,329 (June 1992).
3. Rangarajan, S., Qi, G., Bandyopadhyay, A., Dai, C., Han, J. W., Bhargava, P., Wu, S., Safari, A., and Danforth, S. C. in The Role of Materials Processing Variables, in the FDC Process, edited by Bourell, D. L., Beaman, J. J., Crawford, R. H., Marcus, H. L., and Barlow, J. W. (Solid Freeform Fabrication Symposium, Austin, TX, 1997) pp. 431440.
4. Dai, C., Qi, G., Rangarajan, S., Wu, S., Langrana, N. A., Safari, A., and Danforth, S. C. in High Quality, Fully Dense Ceramic Components Manufactured Using Fused Deposition of Ceramics (FDC), edited by Bourell, D. L., Beaman, J. J., Crawford, R. H., Marcus, H. L., and Barlow, J. W. (Solid Freeform Fabrication Symposium, Austin, TX, 1997) pp. 411420.
5. Bhargava, P., Bandyopadhyay, A., Rangarajan, S., Qi, G., Dai, C., Wu, S., Danforth, S. C., and Safari, A. in Shrinkage, Weight Loss and Crack Prevention During Binder Burn Out of Components Produced by Fused Deposition of Ceramics (FDC), edited by Bourell, D. L., Beaman, J. J., Crawford, R. H., Marcus, H. L., and Barlow, J. W. (Solid Freeform Fabrication Symposium, Austin, TX, 1997) pp. 395402.
6. Hirao, K., Nagsoka, T., Brito, M. E., and Kanzaki, S., J. Am. Ceram. Soc., 77[7]1857–62(1994).
7. Hirao, K., Ohashi, M., Brito, M. E., and Kanzaki, S., J. Am. Ceram. Soc., 78[6]1687–90(1995).
8. McIntosh, J. J., Danforth, S. C., and Jamalabad, V. in Shrinkage and Deformation in Components Manufactured by Fused Deposition of Ceramics, edited by Bourell, D. L., Beaman, J. J., Crawford, R. H., Marcus, H. L., and Barlow, J. W. (Solid Freeform Fabrication Symposium, Austin, TX, 1997) pp. 159166.
9. Clancy, R., Jamalabad, V., Whalen, P., Bhargava, P., Dai, C., Rangarajan, S., Wu, S., Danforth, S., Langrana, N., and Safari, A. in Fused Deposition of Ceramics: Progress Towards a Robust and Controlled Process for Commercialization, edited by Bourell, D. L., Beaman, J. J., Crawford, R. H., Marcus, H. L., and Barlow, J. W. (Solid Freeform Fabrication Symposium, Austin, TX, 1997) pp. 185194.
10. Cima, M. J., Lewis, J. A., and Devoe, A. D., J. Amer. Ceram. Soc., 72, pp. 1192–99(1989).
11. Lee, F. and Bowman, K. J., J. Am. Ceram. Soc., 75[7]1748–55(1992).

Homogeneity, Anisotropy, and Texture In Si3n4 Ceramics made by Fused Deposition

  • S. Rangarajan (a1), I. Pozsgai (a1), J. McIntosh (a1), R. McCuiston (a1), B. L. Harper (a1), N. Langrana (a1), A. Safari (a1), S. C. Danforth (a1), R. B. Clancy (a2), C. Gasdaska (a2) and P. J. Whalen (a2)...

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed