Title: Mechanical properties of C/C-SiC composites by compression molding
Abstract:C/C-SiC composites were prepared by compression molding with carbon fiber,silicon powder,graphite powder and so on.The effects of fiber dispersion,fiber length and succession carbonization process on ...C/C-SiC composites were prepared by compression molding with carbon fiber,silicon powder,graphite powder and so on.The effects of fiber dispersion,fiber length and succession carbonization process on mechanical properties were studied with electron omnipotence test equipment,and the fracture morphologies were observed by scanning electron microscopy.The results show that when the distribution of fiber in composites is in single fiber state,the combination of fiber and matrix is compact,and the mechanical properties of composites improve.When the fiber is 5 mm in length,the integrated mechanical properties of composites are better with bending strength 59.06 MPa,compressive strength 147.03 MPa in parallel direction,134.25 MPa in vertical direction and impact toughness 2.45 kJ/m2.The compressive strength of composites increases by 22% after successive carbonization process,but the impact toughness decreases slightly,and the fracture model of composites is of brittle fracture.Read More
Publication Year: 2008
Publication Date: 2008-01-01
Language: en
Type: article
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