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Fabrication of Nanosized Al2O3 Coated Reinforcing Particle Using Electrostatic Force

Title
Fabrication of Nanosized Al2O3 Coated Reinforcing Particle Using Electrostatic Force
Author
백운규
Keywords
Nano-Sized Alumina; Titanium Carbide; Electrostatic Force; Coating; Dispersion
Issue Date
2013-03
Publisher
AMER SCIENTIFIC PUBLISHERS, 26650 THE OLD RD, STE 208, VALENCIA, CA 91381-0751 USA
Citation
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY,13(3),p.1830-1833
Abstract
Titanium carbide (TiC) particles have been coated with aluminum (Al) phase to enhance the compatibility with a metal matrix based on Al, expecting the homogenous dispersion of TiC particles into the matrix. The TiC particles were uniformly dispersed in the aqueous solution of pH 12. The aluminum nitrate as a precursor of Al phase was added to the solution dispersed with the TiC particles. The coating of Al phase onto the TiC particle was driven by the attractive force between the TiC particle with a negative charge and the Al cation in the aqueous solution. The TiC was not oxidized after heat treatment at 500 degrees C, whereas titanium dioxide peaks are detected after heat treatment at 1000 degrees C. In addition, the Al phase coated on the TiC surface was converted to amorphous alumina (Al2O3) and crystallized into alpha-Al2O3 during heat treatment at 500 and 1000 degrees C, respectively. The heat treatment condition such as atmosphere and temperature was an important factor in fabricating the reinforcing particles without degradation such as oxidation and phase transformation. The nano-sized Al2O3 coated reinforcing particles could be well fabricated using electrostatic force in the aqueous solution and by controlling the heat treatment condition.
URI
http://www.ingentaconnect.com/content/asp/jnn/2013/00000013/00000003/art00035;jsessionid=570p333egdcla.x-ic-live-03http://repository.hanyang.ac.kr/handle/20.500.11754/73095
ISSN
1533-4880
DOI
10.1166/jnn.2013.6997
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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