Freeform fabrication by controlled droplet deposition of powder filled melts
Source abstract
Abstract
A method of directly delivering highly filled hot-melt particulate suspensions using piezoelectric droplet generators is presented. Highly fluid suspensions of alumina in a mixture of long and short chain n-alkanes containing up to 40% by volume solids have been prepared. These fluids were subsequently used to deposit ceramic objects using a commercial ink-jet printer. These objects were then successfully sintered to near full density. The deposition mechanism is controlled by the propagation of acoustic waves in a droplet generating chamber. We have observed the change in resonance of this chamber with the introduction of particles into a fluid. A simple model is developed to explain these observations in terms of changes in the speed of sound of the fluid on the addition of solid particles in suspension.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrohydrodynamics and Fluid Dynamics · Fluid Dynamics and Heat Transfer · Microfluidic and Bio-sensing Technologies
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References (11)
Show source-provided references
1. E. SACHS, M. CIMAA, P. WILLIAMA, D. BRANCAZIO and J. CORNIE, Journal of Engineering for Industry-Transactions of the ASME 114 (1992) 481.10.1115/1.2900701 ↗
2. P. F. BLAZDELL and J. R. G. EVANS, Journal of Materials Processing Technology 99 (2000) 94.10.1016/S0924-0136(99)00392-1 ↗
3. C. E. SLADE and J. R. G. EVANS, J. Mater. Sci. Lett. 17 (1998) 1669.10.1023/A:1006666718653 ↗
4. Q. F. XIANG, J. R. G. EVANS, M. J. EDIRISINGHE and P. F. BLAZDELL, Proceedings of the Institution of Mechanical Engineers B 211 (1997) 211.10.1243/0954405971516194 ↗
5. K. A. M. SEERDEN, N. REIS, J. R. G. EVANS, P. S. GRANT, J. W. HALLORAN and B. DERBY, J. Amer. Ceram. Soc. 84 (2001) 2514.10.1111/j.1151-2916.2001.tb01045.x ↗
6. N. REIS, K. A. M. SEERDEN, B. DERBY, P. S. GRANT, J. W. HALLORAN and J. R. G. EVANS, in “Solid Freeform and Additive Fabrication,” edited by D. Dimos, S. C. Danforth and M. J. Cima, MRS Symp. Proc. 542 (1999) 147.
7. N. REIS and B. DERBY, in “Solid Freeform and Additive Fabrication-2000,” edited by S. C. Danforth, D. Dimos and F. B. Prinz, MRS Symp. Proc. 625 (2000) 117.
8. B. DERBY, N. REIS, K. A. M. SEERDEN, P. S. GRANT and J. R. G. EVANS, in “Solid Freeform and Additive Fabrication-2000,” edited by S. C. Danforth, D. Dimos and F. B. Prinz, MRS Symp. Proc. 625 (2000) 195.10.1557/PROC-625-195 ↗
9. T. A. RING, “Fundamentals of Ceramic Powder processing and Synthesis” (Academic Press, San Diego, USA, 1996).
10. E. B. WYLIE, V. L. STREETER and L. SUO, “Fluid Transients in Systems” (Prentice Hall, Englewood Cliffs, NJ, 1993).
11. Sanders Design International, Merrimack, NH, USA, private communication.