Mechanical Properties of CNF Reinforced Ceramic Composites Sintered with SPS Technique

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概要

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• Alumina matrix composites reinforced by carbon nanofibers (CNFs) of 0, 5, 10, 20 vol% were fabricated using a spark plasma sintering (SPS) technique. In this study, to disperse CNFs uniformly in ceramic matrix, an electrostatic adsorption technique was used to fabricate the mixed powder. The open porosity of the specimen increased and the mechanical properties decreased with the increase in CNF content. It might be resulted from the insufficient interfacial shear strength and CNFs worked as flaws in composites. In order to improve the interfacial shear strength, SiC particles were added into the interfacial phase between CNF and matrix so that the thermal mismatch and bonding between CNF and matrix were controlled. Consequently, it was demonstrated that mechanical properties were enhanced and the pull-out length decreased for the specimens with SiC addition. It was then suggested that the interfacial shear strength was successfully improved due to SiC addition.

• 一般社団法人 日本機械学会の論文

著者

• Akatsu Takashi

  Materials And Structures Laboratory Tokyo Institute Of Technology

• Wakayama Shuichi

  Department Of Mechanical Engineering Graduate School Of Engineering Tokyo Metropolitan University

• Sakai Takenobu

  Department Of Mechanical Engineering Tokyo Metropolitan University Tokyo

• SAKAI Takenobu

  Department of mechanical Engineering, Tokyo Metropolitan University

• UMINO Kosuke

  Tokyo Metropolitan University

• UMEHARA Yuka

  Tokyo Institute of Technology

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