Abstract
On the basis of experimental data, a densification rate mode to describe the woven preform deposited in the thermal gradient CVI process was put forward. It was found to fit in with the index densification equation which was usually used to describe the kinetic process that organic molecules filled in pores of substrate. Simultaneously, it was also found that the thermal gradient field and the directional flow field of input gas within the deposited preform could largely raise the densification rate of the preform, for they could accelerate the diffusion rate of filled molecules and reduce the surface crust formation of the preform in the thermal gradient CVI process.
Original language | English |
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Pages (from-to) | 64-70 |
Number of pages | 7 |
Journal | Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica |
Volume | 20 |
Issue number | 2 |
State | Published - Apr 2003 |
Keywords
- Carbon/carbon composite
- Chemical vapor deposition
- Densification kinetics of preform
- Index densification equation