2011 International Conference on Alternative Energy in Developing Countries and Emerging Economies
- 125 -
4.3. Analysis of obtained aluminum powder
The crystal structure of the aluminum powder is
characterized by XRD (RIGAKU model RINT 2000)
diffractometer using Cu/K Į radiation (Ȝ=1.54056 Aº with
40kV, 40mA), scan speed of 4º/min, in the 2ș range of 10º
to 70º. The XRD patterns of aluminum powder are
observed at 2ș angles of 39.11º (111), 45.32º (200), 65.67
º
(220). The typical XRD pattern of product aluminum
powder is shown in Fig. 9. The sizes of the particles were
estimated by calculation using Scherrer’s equation. The
result shows that the distribution size is narrowest at 710ºC
with the minimum size of 71nm and maximum of 86nm.
Fig.9. X-ray Diffraction pattern of product aluminum
powder
5. CONCLUSIONS
In this paper, aluminum powders were obtained under
75 microns by using hybrid atomization method. The
smallest sizes of 71-86nm were obtained from powder
synthesize at 710ºC. The result of product yield (48%)
can be obtained at gas pressure 0.7 MPa. It has been
shown that increasing the pressure leads to decrease the
powder particle size. From the result, aluminum powder
can be apply as an energetic material for the production of
solid propellant.
6. REFERENCES
[1]K.Grjotheim and B.J. Welch,
Ü
Aluminum smelter
technology- a pure and applied approach,
Á
1998, pp. 1-
10.
[2]B. Verlinden and L. Froyen,
Ü
Aluminum powder
metallurgy,
Á
1994, pp. 1-26.
[3] E. Klar and J.W. Fesko,
Ü
Gas and water atomization,
Á
ASM Handbook, ASM International, USA, 1984, pp.
25-39.
[4] J.J. Dukley,
Ü
Atomization, powder metal technologies,
Á
ASM International, Ohio,1998, pp.35-52.
[5] Y.Z. LIU, K. Minagawa, H. Kakisawa and H. Halada,
Ü
Melt film formation and disintegration during novel
atomization process,
Á
vol. 17, September 2007, pp.
1276-1281.
[6] K. Minagawa, H. Kakisawa, H. Halada, Y. Osawa and
S. Takamori,
Ü
Production of fine spherical lead-free
solder powders by hybrid atomization,
Á
July 2005, pp.
325-329.
[7]K. Minagawa, , H. Kakisawa, H. Halada, Y. Osawa and
S. Takamori,
Ü
Hybrid atomization method suitable for
production of fine spherical lead-free solder powder,
Á
December 2005, pp. 83-88.
[8] H. Lubanska,
Ü
Correlation of spray ring data for gas
atomization of liquid metal,
Á
1970, pp. 45-49.
0
10
(111)
(200)
(220)
40
30
20
70
60
50
200
100
300
500
400
600
Two-theta (deg)
