Preparation of Boron Carbide Spherical Films and Hollow Microsphere

doi:10.3724/SP.J.1077.2012.12091

Abstract

Abstract: Boron carbide spherical-films were prepared by electron-beam evaporation deposition technique on steel ball substrates,combined with a independently designed magnetron rolling method. The boron carbide micro-shell was obtained after sintering, drilling and corrosion. The microcosmic appearance, microstructure, morphology, element composition of the boron carbide spherical films were investigated. The effect of annealing temperature (800–1100℃) on the boron carbide hollow micro-shells was also studied. The products were characterized by scanning electron microscope (SEM), X-ray photoelectron spectroscope (XPS), atomic force microscope (AFM). The results show that the film is dense without any cracks and pores. Besides, the elemental distribution is well-proportioned. When the annealing temperature is over 900℃, the coating is self-standing formed into a hollow microsphere. The hollow microsphere annealed at 900℃ has the best micro appearance with a thickness over 10 μm.

Key words: electron beam vacuum evaporation, magnetron rolling method, boron carbide spherical films, boron carbide hollow micro-shells

CLC Number:

O484

YU Xiao-He, LU Tie-Cheng, LIN Tao, WANG Zi-Lei, TAO Yong, LIAO Zhi-Jun. Preparation of Boron Carbide Spherical Films and Hollow Microsphere[J]. Journal of Inorganic Materials, 2012, 27(12): 1325-1330.

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