TEM Analysis of Interface in SiC Fibre Reinforced Aluminium Matrix Composite Prepared with Semi-solid Diffusing Method

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Journal of Materials Engineering ›› 2009, Vol. 0 ›› Issue (6) : 46-50.

TEM Analysis of Interface in SiC Fibre Reinforced Aluminium Matrix Composite Prepared with Semi-solid Diffusing Method

JI Ling, WANG Yumin, SHI Nanlin

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Abstract

A novel processing called semi-solid diffusing(SSD) method was used to manufactured CVD SiCf /Al(5A02) composite.The interface reactions and the products were compared with that of specimen manufactured by solid diffusing bonding(SDB) method.In the case of specimen manufactured with SSD method,an interface without Al₄C₃ formed and some MgO particles were detected.However,in the specimen manufactured with SDB,Al₄C₃ formed and grew into the matrix from the Al₂O₃ film attached on the carbon coating,which destroy the continuity of interface.Because Mg enriched around the surface of SiC fiber and MgO was formed,the diffusion of C in the interface was decreased and the forming of brittle Al₄C₃ was restricted,which was beneficial to control the negative reaction of interface.

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SiC / Al / composite / semi-solid diffusing(SSD) / interface / TEM

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JI Ling, WANG Yumin, SHI Nanlin. TEM Analysis of Interface in SiC Fibre Reinforced Aluminium Matrix Composite Prepared with Semi-solid Diffusing Method[J]. Journal of Materials Engineering, 2009, 0(6): 46-50

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