宇航材料工艺
宇航材料工藝
우항재료공예
AEROSPACE MATERIALS & TECHNOLOGY
2010年
2期
106-108
,共3页
程家%张中伟%许正辉%宋永忠
程傢%張中偉%許正輝%宋永忠
정가%장중위%허정휘%송영충
难熔金属化合物%微观结构%石墨化
難鎔金屬化閤物%微觀結構%石墨化
난용금속화합물%미관결구%석묵화
Refractory metal compounds%Microstructure%Graphitization
利用液相浸渍法制备了含有难熔金属化合物的C/C复合材料,通过金相显微镜、面扫描观察了难熔金属颗粒在材料中的分散状态;并表征了碳纤维、基体碳的微观结构和纤维/基体的界面状态.研究发现,难熔金属化合物在高温下对碳具有催化石墨化和诱导石墨化作用,石墨微晶尺寸大,发育好,取向性高.
利用液相浸漬法製備瞭含有難鎔金屬化閤物的C/C複閤材料,通過金相顯微鏡、麵掃描觀察瞭難鎔金屬顆粒在材料中的分散狀態;併錶徵瞭碳纖維、基體碳的微觀結構和纖維/基體的界麵狀態.研究髮現,難鎔金屬化閤物在高溫下對碳具有催化石墨化和誘導石墨化作用,石墨微晶呎吋大,髮育好,取嚮性高.
이용액상침지법제비료함유난용금속화합물적C/C복합재료,통과금상현미경、면소묘관찰료난용금속과립재재료중적분산상태;병표정료탄섬유、기체탄적미관결구화섬유/기체적계면상태.연구발현,난용금속화합물재고온하대탄구유최화석묵화화유도석묵화작용,석묵미정척촌대,발육호,취향성고.
C/C composites with refractory metal compounds were prepared by liquid impregnation, the distribution state of refractory metal grain was observed by optical microscope and surface scan. Microstructure morphology of carbon fibers, carbon matrix and fiber/matrix interface were measured by scan electron microscope,transmission electron microscope and optical microscope.