Numerical Simulation of Collision Process of Reactive Flame Spraying Particles with Substrate
TiC-TiB2 multiphase coatings were prepared with Ti-B4C-C as the reactive flame spray system. The ANSYS method of finite element was used to investigate the rule of temperature change of the deposits which came from the single spray particle colliding with the substrate in different state. So the influence of it on the bonding strength between the coatings and substrate was illustrated. It was shown that as for the deposit A, which came from the collision of the completely reactive molten spray particle with the substrate, it has relatively lower temperature with large temperature difference. So it is hard to make the surface of the substrate melted and form metallurgical bonding. As for the deposit B, which came from the collision of as-reactive spray particle with the substrate, it has relatively higher temperature with uniform distribution. So it can realize the metallurgical bonding with the substrate. The collisions of those spray particles whose SHS reaction has just been ignited with the substrate will lead to the reaction terminate. The results of the numerical simulation are consistent with the experiments on the whole.
Reactive flame spray Collision process Numerical simulation ANSYS finite element
H.W.Liu L.Zhang W.B.Hu J.J.Wang
Institute of Advanced Materials, Ordnance Engineering College, Hebei, Shijiazhuang 050003 China
国际会议
郑州
英文
2007-10-23（万方平台首次上网日期，不代表论文的发表时间）