_飞机刹车用长寿命高摩擦特性炭_炭复合材料制备技术_英文_.pdfVIP

25 5 Vo.l 25 No. 5 2010 10 NEW CARBON MATERIALS Oct. 2010 Article ID: 2010) Preparation and characterization of carbon/carbon aircraftbrake materialswith long service life and good frictionalproperties 1 1 1 1 1 SU Junm ing , X IAO Zhichao , L IU Y ongqiong , MENG Fancai, PENG Zh igang , 1 2 1 GU L im in , LIG uofeng , X ING Rupeng ( 1. X i an Chaom a Techn ology Co. , L td, A erosp ace Comp os ite M a teria ls R esea rch Institute, X ian 710025, Ch ina; 2. M a in tenance and Eng in eering D ep artm ent o S henzhen A irlines, S henz hen 518128, Ch ina ) Abstract: A 320 series aircraft carbon/carbon brakem aterialsw ere prepare by processing a nee lepunche carbon f i ber preform w ith quasi three mi en sional in tegrity. The preform w as first mi pregnate w ith a resin an heate to 800 to convert the resin to carbon. Th isw as fo llow e by chem ical vapor inf iltration ( CVD ) using propylene as the source gas an a ra ial therm al gra ien t ( external heating, internal cooling or internal heating, external coo ling ). For the CVD process the perform s w ere separate by graphite pa s to allow free f low of propylene along the channels thus form e . The final brake iscsw ere obtaine by a further h ightem perature treatm en t from. These carbon brake iscsw ere com pare w ith the a vance