ISSN:
1013-9826
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
With Ti-B4C-C as self-reactive spray forming system, the flying combustion process of thesprayed particles was studied by means of water-quenching experiments and numerical simulation. It wasfound that after the particles have been heated in the oxyacetylene flame for a short time, Ti in theparticles melts first and then infiltrates B4C and C. The SHS reaction of the sprayed particles takes placesubsequently. Then the liquid ceramic beads appear and crystallize into ceramic grains finally. By theANSYS finite element analysis, it can be known that the SHS reaction of the sprayed particles starts afterthey 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 withthe experimental results on the whole
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/01/56/transtech_doi~10.4028%252Fwww.scientific.net%252FKEM.368-372.1686.pdf