Abstract
In order to get a homogenous mixture and compact of TiB2-Al2O3, hybridization as a surface modification method was used to prepare nano-scale Al2O3 coated TiB2 particles. PE-wax particles were first coated onto TiB2 particles by hybridization, and then the nano-scale Al2O3 particles were coated onto the surface of TiB2 coated by PE-wax particles again. SEM, TEM and EDS were used to characterize the microstructure of as-received core/shell particles and its compacts. The experimental results show that a particle-scale homogenous dispersion of TiB2 and Al2O3 can be formed not only in mixed powder but also in dewaxed compacts. The compacts then were sintered by gas-pressing sintering (GPS). Finial products show improved mechanic properties comparing with reference samples fabricated by normal ways.
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Funded by the Foundation from the State Key Lab of Material and Processing of Wuhan University of Technology(2011-KF-7) and the Foundation of Ministry of Education of China(PCSIR70644)
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Zhang, J., Tang, W., Fu, Z. et al. Fabrication of homogenous dispersion TiB2-Al2O3 composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 26, 681–683 (2011). https://doi.org/10.1007/s11595-011-0291-4
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DOI: https://doi.org/10.1007/s11595-011-0291-4