期刊
MATERIALS LETTERS
卷 181, 期 -, 页码 261-264出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.06.048
关键词
Porous materials; Space holder; Sintering; Microstructure
资金
- Program for Innovation Research Team of China University of Mining and Technology [2015QN004]
- State Key Lab of Advanced Metals and Materials [2015- Z03]
- National Natural Science Foundation of China [51574241]
- bilateral project of NSFC-STINT [51611130064]
Porous TiAl3 intermetallics were synthesized by thermal explosion (TE) reaction with NaCl as space holder material, from Ti-75Al at.% elemental powders. Results showed that the actual temperature of specimen climbed rapidly from 667 degrees C to 1106 degrees C. As a consequence, porous TiAl3 intermetallics with high open porosity (> 80%) can be easily achieved when adding NaCl particles above 50 vol%. XRD patterns showed that only single-phase TiAl3 compound was synthesized via TE. Hierarchical porous TiAl3 materials displayed three pore structures, including large pores replicating from original NaCl particles, small pores among the skeletons, and tiny pores precipitated from particle skeletons. Moreover, porous TiAl3 intermetallics exhibited a uniform pore size distribution and formed an open-cellular structures allowing for the liquid-gas separation and filtration applications. (C) 2016 Published by Elsevier B.V.
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