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Carbon carbon composite material(C/C) is highly valued by advanced technology research personnel,and till now,the carbon carbon composite material is still the main material of the strategic missile and solid rocket motor nozzle The carbon carbon composite material is carbon fiber reinforced matrix,is make the carbon fiber as the reinforced material,and make the carbon as the matrix,and use the processing and carbonization process to meet all carbon composite material. The carbon content of the carbon carbon composite material can be above 99% after high thermal processing. And it has many good properties. The density of carbon composite material is very low(<2.0 /cm3),it’s the 1/4 of Ni,1/2 of ceamic,it’s very important to some structure which has a light requirement. The high thermal…
The throat material now is made from carbon carbon composite material,and the main material is 4D C/C, the acupuncture and puncture knitting process is the main direction. The throat is one of the most important parts of the engine,and the throat material must meet the technology requirement of the missile engine. The material of the missile throat used to made from polycrystalline graphite, re-crystallized graphite,pyrolytic graphite etc. now the carbon carbon composite material is used for this parts. Carbon carbon composite material is made from carbon fiber and carbon matrix material,it’s more strengthful than graphite material, thermal shock resistance property is better than graphite material,and it can be designed. Now the carbon carbon composite material has become the most appropriate…
The graphite parts dipped with Ag have many good performance,such as it can be used under the 900centigrade situation,corrosion resistance,mechanical strength and good wear resistance.The graphite dipped with Ag is hard to process,and it cost much. The technology of the graphite-Ag need Hi-tech processing and precious metals. And it once used for military,and the exporting is also forbid. The process technology of the graphite-Ag is not easy,it need complex impregnation system,and special graphite raw material.make the carbon/graphite material as the matrix,make it under the high temperature and make the melt Ag into the graphite porosity,and got the graphite–Ag material. The graphite dipped with Ag has a low density,low C.E.T.and high mechanical strength,and the friction is also low. The graphite dipped…
