Development of vapour-grown carbon nano-fibre-reinforced aluminium matrix composites by low-pressure infiltration process. (November 2015)

• Record Type: Journal Article
• Authors: Xu, Z. F.; Choi, Y. B.; Lee, M. H.; Zhao, Y. C.; Sugio, K.; Matsugi, K.; Sasaki, G.
• Is Part Of: Materials research innovations. Volume 19(2015)Supplement 9
• Page Start: S9-167
• Page End: S9-170
• Publication Date: 2015-11
• Subjects: Vapour-grown carbon nano-fibre -- Aluminium matrix composite -- Low-pressure infiltration -- Electrical conductivity -- Microstructure; Materials -- Research -- Periodicals; Matériaux -- Recherche -- Périodiques; 620.1105
• DOI: 10.1179/1432891715Z.0000000001952
• Languages: English
• ISSNs: 1432-8917

Abstract

Abstract : This study was aimed for development of vapour-grown carbon nano-fibre(VGCNF)-reinforced aluminium matrix composites by the low-pressure infiltration process. First, VGCNF and Al powder (VGCNF + Alp) preforms for low-pressure infiltration were fabricated by spark sintering process at pressures of 5, 10, 20 and 40 MPa, respectively. Porosity of the preforms fabricated at pressures of 5 and 10 MPa was 44·89 and 40·87%, respectively. However, porosity of the preforms fabricated by spark sintering at pressures of 20 and 40 MPa was approximately 20%. Therefore, VGCNF + Alp /Al composites with the preform sintered at pressures of 5 and 10 MPa were fabricated by the low-pressure infiltration process under an applied pressure of 0·4 MPa, and the relative density was 81·4 and 76·0%, respectively. Moreover, the microstructure, porosity and electrical conductivity of the VGCNF + Alp /Al composites were estimated. Their electrical conductivities reduced with increasing porosity of VGCNF + Alp /Al composites.