In:
Key Engineering Materials, Trans Tech Publications, Ltd., Vol. 368-372 ( 2008-2), p. 1686-1688
Abstract:
With Ti-B4C-C as self-reactive spray forming system, the flying combustion process of the
sprayed particles was studied by means of water-quenching experiments and numerical simulation. It was found that after the particles have been heated in the oxyacetylene flame for a short time, Ti in the
particles melts first and then infiltrates B4C and C. The SHS reaction of the sprayed particles takes place subsequently. Then the liquid ceramic beads appear and crystallize into ceramic grains finally. By the
ANSYS finite element analysis, it can be known that the SHS reaction of the sprayed particles starts after they have left the muzzle for about 9.5×10-4s and lasts about 1.45×10-3s before the ceramic beads solidify.
The calculated optimal melting distance for the spray particles is about 116mm, which is consistent with the experimental results on the whole.
Type of Medium:
Online Resource
ISSN:
1662-9795
DOI:
10.4028/www.scientific.net/KEM.368-372
DOI:
10.4028/www.scientific.net/KEM.368-372.1686
Language:
Unknown
Publisher:
Trans Tech Publications, Ltd.
Publication Date:
2008
detail.hit.zdb_id:
2073306-9
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