Abstract
The erosion mechanism of the copper-infiltrated graphite throat insert (CIGTI) was obtained by means of studying the micro structure and the thermal conductivity of the copper-infiltrated graphite materials, analyzing the chemical reaction between the copper-infiltrated graphite and high-temperature gas. Some phenomena have been found, such as phase transformation of the copper, loss of the melting-copper on the insert surface, thermochemical ablation and mechanical exfoliation of the graphite matrix; but the self-transpiration of the copper hasn't observed. It is also shown that the copper couldn't react with combustion gas during ablating of the copper-infiltrated graphite. The formula for the evaluation of steady erosion rate of CIGTI was obtained.
| Original language | English |
|---|---|
| Pages (from-to) | 57-59 |
| Number of pages | 3 |
| Journal | Guti Huojian Jishu/Journal of Solid Rocket Technology |
| Volume | 27 |
| Issue number | 1 |
| State | Published - Mar 2004 |
| Externally published | Yes |
Keywords
- Copper-infiltrated graphite
- Erosion mechanism
- Nozzle throat insert
- Solid propellant rocket engine