Article ID Journal Published Year Pages File Type
1642091 Materials Letters 2016 4 Pages PDF
Abstract

•Novel nano/micro-sized hybrid reinforcement-SiCp(CNT) was explored and synthesized.•CNT was uniformly covered on the surface of SiCp by chemical vapor deposition.•SiCp(CNT)/Al composite was prepared by PM with well-dispersed SiCp and CNT.•The tensile strength of SiCp(CNT)/Al composite was 74% higher than that of Al matrix.

In order to achieve a uniform distribution of carbon nanotube (CNT) reinforcement in aluminum (Al) matrix, novel nano/micro-sized hybrid reinforcements with CNT growing on the surface of SiC particle (SiCp) was synthesized by a chemical vapor deposition method. Subsequently, the hybrid reinforcement (defined as SiCp(CNT)) was mixed in the pure Al matrix by merely blending powder, as a result, CNT was well-dispersed in the matrix with the help of micro-sized SiCp as a “vehicle”. With the novel reinforcement, SiCp(CNT)/Al composite exhibited both improved elastic modulus of 93 GPa (35% higher than that of Al matrix) and tensile strength of 202 MPa (74% higher than that of Al matrix), mainly because CNT was dispersed uniformly and achieved intimate interfaces with Al matrix with the help of well dispersed SiCp.

Related Topics
Physical Sciences and Engineering Materials Science Nanotechnology
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