carbon carbon composites 1

[wilkinsona25]

What are carbon carbon composites?
How are they made?

Straight to the point or what!

 

[GJS]

I dont know much about the process myself, but this link gives the briefest, zero-detail, overview....

http://www.sgl-hitco.com/products/temperature/carbcarb/

Hope it is at least a starting point

GJS

 

[zuardy]

carbon carbon composites or CC (don't mistake it with CMC. that stands for Ceramic Matrix Composite) is carbon fiber embedded in carbon matrix or me can call it : Carbon Fiber Reinforced Carbon ;-). Unfortunately, i have loose my article about the process to make it, i am sorry not helping you futhere!
cheers

 

[Ghid]

Excuse me for my English, but I'm Italian. CC is CMC (carbon matrix composite), and is usually made by CVD (chemical vapor deposition) process on a preform made of carbon fibers. The process, in few words, looks simple: methane is passet at high temperacture throu the preform; at that temperacture CH4 decomposes (partially) in C + 2 H2. Carbon, in this way, "grows" on the fibers.
The problems, in such a kind of work, are the long time requested, the imposibility to obtain a composite without voids, and the necessity of manteining a temperacture gradient.
Regards,
Ghid