Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-05T00:48:14.987Z Has data issue: false hasContentIssue false
  • English
  • Français

Laser Diagnostics for Investigation of Particle Formation Processes

Published online by Cambridge University Press:  22 February 2011

H. G. Semerjian ,
M. R. Zachariah  and
C. Presser
H. G. Semerjian
Affiliation:
National Bureau of Standards, Center for Chemical Engineering Gaithersburg, MD 20899
M. R. Zachariah
Affiliation:
National Bureau of Standards, Center for Chemical Engineering Gaithersburg, MD 20899
C. Presser
Affiliation:
National Bureau of Standards, Center for Chemical Engineering Gaithersburg, MD 20899
Get access

Abstract

Formation, growth and deposition of particles represent a critical part of several important industrial processes, such as production of carbon black, optical fibers, micro-electronic components, and metal and ceramic powders. Laser diagnostic techniques are utilized to develop a fundamental understanding of these processes.

Formation of carbonaceous soot particles has been studied in laminar, coannular, hydrocarbon diffusion flames. Laser extinction/scattering, laser scattering dissymmetry, and velocimetry measurements have been used to determine particle volume fraction, size, number density and velocity. From this set of data, particle formation and growth rates have been determined for different fuels and at different temperatures. Similar techniques have been used to study silica particle formation in an opposed jet diffusion flame, where silicon is introduced in the form of silane (SiH4) into the fuel stream (H2/Ar); the oxidant is an O2/Ar mixture. The advantage of this geometry is that, along the stagnation point streamline, the flow may be considered one-dimensional. This should allow the extension of the results of this study to practical CVD or MCVD processes for optical fibers. Laser diagnostic techniques are also being used to investigate metal powder atomization processes, and the effect of operating conditions on particle size distribution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 117: Symposium C – Process Diagnostics: Materials, Combustion, Fusion , 1988 , 137
Copyright
Copyright © Materials Research Society 1988

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Ulrich, G.D., Chem. & Eng. News, p. 22, Aug. 6, 1984.CrossRefGoogle Scholar
2. Nagel, S.R., MacChesney, J.B. and Walker, K.L., IEEE J. Quant. Electr. OE–18, 459 (1982).Google Scholar
3. Ulrich, G.D., Comb. Sci. & Tech. 4, 47 (1971).Google Scholar
4. Ulrich, G.D. and Subramanian, N.S., Comb. Sci. & Tech. 17, 119 (1977).CrossRefGoogle Scholar
5. Simpkins, P.G., Greenberg-Kosinski, S. and MacChesney, J.B., J. Appl. Phys. 50, 5676 (1979).CrossRefGoogle Scholar
6. Morse, T.F., Digiovanni, D., Wang, C.Y. and Cipolla, J.W., J. Lightwave Tech. LT–4, 151 (1986).Google Scholar
7. Hanabusa, M., Mat. Sci. Reports 2, 51 (1987).Google Scholar
8. Presser, C., Gupta, A.K., Santoro, R.J. and Semerjian, H.G., Proc. ICALEO '86, 58, 160 (1986).Google Scholar
9. Santoro, R.J., Semerjian, H.C. and Dobbins, R.A., Comb. & Flame 51, 203 (1983).CrossRefGoogle Scholar
10. Presser, C., Gupta, A.K., Semerjian, H.G. and Santoro, R.J., Proc. 2nd ASME/JSME Therm. Eng'g Conf. 1, 73 (1987).Google Scholar
11. Flower, W.L. Hurd, A.J., Appl. Optics, 26, 2236 (1987).Google Scholar
12. Dobbins, R.A., Santoro, R.J. and Semerjian, H.G., in Combustion Diagnostics by Nonintrusive Methods, edited by McKay, J.D. and Roux, J.A., Progr. Astro. & Aero., Vol.92 (AIAA, New York, 1984) p. 208.Google Scholar
13. Zachariah, M.R., Chin, D., Semerjian, H.G. and Katz, J.L., submitted to App. Optics.Google Scholar
14. Swithenbank, J., Beer, J.M., Taylor, D.S., Abbot, D. and McCreath, G.C., in Experimental Diagnostics in Gas Phase Combustion Systems, edited by Zinn, B.T., Progr. Astro. & Aero. Vol.53 (AIAA, New York, 1977) p. 421.Google Scholar
15. Santoro, R.J., Semerjian, H.G., Emmerman, P.J. and Goulard, R., Int. J. Heat & Mass. Tr. 24, 1139 (1981).Google Scholar
16. Semerjian, H.G., Santoro, R.J., Coulard, R. and Emmerman, P.J. in Fluid Mechanics of Combustion Systems, edited by Morel, T., Lohmann, R.P. and Rackley, J.M. (ASME, New York, 1981) p. 119.Google Scholar
17. Dave, J.V., IBM Sci. Center Rpt. No. 320-3237 (1968).Google Scholar
18. Santoro, R.J., Yeh, T.T., Horvath, J.J. and Semerjian, H.G., Comb. Sci. & Tech. 53, 89 (1987).Google Scholar
19. Chung, S.L. and Katz, J.L., Comb. & Flame 61, 271 (1985).Google Scholar
20. Zachariah, M.R., Chin, D., Semerjian, H.G. and Katz, J.L., submitted to 22nd Symp. (Int'l) on Comb. (1988).Google Scholar
21. Ridder, S.D. and Biancaniello, F.S., Proc. 6th Int. Conf., Rapidly Quenched Metals, Montreal (Aug. 1987).Google Scholar
22. Ridder, S.D. and Shechtman, D. in Rapidly Solidified Powder Aluminum Alloyls, ASTM STP 890, Philadelphia, 1985 p. 252.Google Scholar
23. Boettinger, W.J., Bendersky, L. and Early, J.G., Metall. Trans. A, 17A, 781 (1986).CrossRefGoogle Scholar
24. Presser, C., Ridder, S.D. and Biancaniello, F.S., unpublished results.Google Scholar