Flying Combustion Experiments and Numerical Simulation for Ti-B4C-C Agglomerated Particles During the Self-reactive Spray Forming Process
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 x 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.
Self-reactive spray forming Flying combustion Numerical simulation,Finite element
Wang Jianjiang Hu Wenbin Liu Hongwei Du Xinkang
Institute of Advanced Materials,Ordnance Engineering College,Shijiazhuang 050003,China
国际会议
The Fifth China International Conference on High-Performance Ceramics (第五届先进陶瓷国际研讨会(CICC-5))
长沙
英文
1686-1688
2007-05-10（万方平台首次上网日期，不代表论文的发表时间）