Ultrafine Al particle and production method thereof

Details Ultrafine Al particle and production method thereof Ultrafine Al particle and production method thereof

1997-05-23

2000-03-07

Wyszomierski, George

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

75255, 148437, 420528, 502355, B32B 516

Patent

active

060337834

ABSTRACT:
An ultrafine Al particle consists of an Al multiply twinned particle. The Al multiply twinned particle has a decahedron structure surrounded by {111} planes. The Al multiply twinned decahedral particle has a diameter of 10 to 30 nm. Such an ultrafine Al particle consisting of the Al multiply twinned decahedral particle is obtained as follows. A metastable Al oxide particle is placed on an amorphous carbon substrate having the reduction effect. Then the electron beam is irradiated to the metastable Al oxide particle placed on the amorphous carbon substrate in the vacuum atmosphere. From the metastable Al oxide particle, Al atoms or Al clusters are emitted and adsorbed to the substrate. By adjusting the electron beam intensity so that the ultrafine Al particle in the above procedure has a diameter from 10 to 30 nm, the Al multiply twinned particle having a decahedron is obtained.

REFERENCES:
patent: 5407458 (1995-04-01), Konig et al.
P. Herley et al., "Ultra-Fine Particles of Aluminium Formed by Electron-Beam-Induced Decomposition of Aluminium Hydride," Materials Letters, vol. 7, No. 12, Mar. 1989.
B. Xu et al., "Phase Transformation and Bonding of Ceramic Nanoparticles in a Tem," NanoStructured Materials, vol. 6, pp. 727-730, 1995.

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