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CVI process in the preparation of composite materials
Kinds of basic structure types, and was deposited sjC isotropic structure: Figure 1,2,[link widoczny dla zalogowanych],3,4. Figure 1C / C composite material, rough layer structure 2C / C composites, smooth layer structure 3q composites,[link widoczny dla zalogowanych], isotropic structure,[link widoczny dla zalogowanych], we also layered anti-carbon dioxide carbon cloth / carbon materials, mechanical and thermal physical properties do measured permeability material with solid material and the United States were compared with ACC (see Table 1). Results from the comparison, we can see, with anti-CVI carbon dioxide prepared / better than the majority of solid carbon material permeability material, material has reached the level of the U.S. ACC. With C Ⅵ process, we also prepared various components of gradient and density gradient composite materials to meet the needs of special circumstances a picture of a l0 4C/C- ~ C composite materials, SiC isotropic structure of C Ⅵ preparation process in addition to C / C material, but also prepared C / e_TiC, C / C-BN, C/Si3N4, C / TaC, BN / BN, SlC / S ~ C-... ・ ・ and other ultra-high temperature ceramic matrix composite. The purpose of chemical vapor infiltration densification of the material, played the role of loopholes, so the atomic energy industry on a variety of widely used to make airtight components, in addition, a number of gas turbine blades,[link widoczny dla zalogowanych], the crucible of dense, hot die so can use it to manufacture, so CvI technology has broad application prospects. Yan Technology bamboo table near the gate 1991.1 lCVI prepared materials resistant carbon dioxide down compared with the domestic and foreign similar material properties ~ ~ \ materials CvI mole United ACC Properties \ antioxidant it ~ c / c Pull bulk density g/cmL61.6lL85 tensile strength tensile modulus GPa4L365.277 MPa22176.5 tensile strain% O. West 50.124 compressive strength MPa21772.8 compression modulus GPa48.8.177 compression fracture strain of% 0. Z-0.144 MPa shear strength of the ship. 7 interlaminar shear strength tensile strength MPa2.8 MPa9.7112.97 layer coefficient of thermal expansion × 10 '/ KL1o0.77O. (RT a 1093 ℃) (2g_8O0 ~ C) (2g8OO ℃) thermal conductivity W/m-K5.65. (8.3 (800 ~ 'C (800C) Specific Heat J / Kg ・ K1256 radiation coefficient of 0.8 pull oxidation g/m.s0. ∞ 360. ∞ was 60. (13 (D. C.1h) (538 . C.10h) Author: Institute of Metal Research,[link widoczny dla zalogowanych], Chinese Academy of reference 1.Stinton.D.P., Caputo.A.J., andL ~ wden-R.L., SynthesisofFiber-RelatorcdsiCCompositeyChemicalVaporInffltmtion, Amer, Cemm.Soc, B1m.V0165 (1g aiming). No2.P.3472.Ciang.Y.M._Haggerty-J.S., Messner.R.P .. andDemetry.C.-ReactlomBa ~,-dProcessingMethodsforCeramix-MartixComposites.AmerlcanCeramic. & ; ety & 1l1etln.Vo1 Zhao .1989, No2.P.4203.CurryC.M.. ScottH.C .. andWebsterC.N., MaterialCt-~ u'acteristicofSpaceShuttleRdaforcedCarbon42arbon .24 thNational & ESymposium.1 Xin 9.P15244.NaslalnR .. I -hgenmuUer.P .. ChrlsF.-He ~ aud.L.andChou.J.J._CarbonFiber42arbonandSilkonCarbideBinaryMatrixComposites.ANewClassofMaterialsforHighTemperatureApplkation, AdvancesinCompo ~ teMaterials, v01.2.ICCM / 3,19 Health. P.1084 'technology of bamboo through the South Gate in 1991 .1
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