Earticle

초록

영어

In this work , Csf/SiC composite was hot pressed by adding short carbon fiber and nano carbon black and nano SiC powder into SiC powder by rapid hot press sintering in order to improve the fracture toughness and other mechanical properties .The density, hardness, phase composition, mechanical properties of Csf/SiC composite were studied, the toughening principle was also discussed. The results indicated that: the Csf/SiC composite had a high density of above 98% in less than 30vol.% short carbon fiber . The hardness was decreased with the increase of the amount of Csf fibe. The composite were mainly composed of 6H-SiC and C, the high temperature graphitization of short carbon fiber resulted the diffraction peaks of C in crystalline by XRD. Short carbon fibers were distributed uniformly and no aggregation in the matrix when contents of fiber were less 30vol.% by SEM test. The bending strength of the composite reached 423MPa at optimal conditions. Too many fibers in the matrix led to decline of bending strength sharply. The fracture toughness reached 4.9MPa·m1/2 of maximum with more obvious toughening effect. The debonding, pullout and breakage behaviors of the Csf fiber and crack propagation were identified as the dominant toughing mechanism in such composites.

목차

Abstract
 1. Introduction
 2. Experimental
 3. Results and Discussion
  3.1. Effects of Fiber Content on Relative Density of Composite
  3.2. Effects of Fiber Content on Hardness of Composite
  3.3. Phase Analysis of Composite of Different Short Carbon Fiber Content
  3.4. Microstructure and Fiber Dispersion of Composite
  3.5. Effects of Fiber Content on Mechanical Properties of Composite
  3.6. Toughening Principle
 4. Conclusion
 Acknowledgements
 References

키워드

저자

• Hui Tang [ School of Materials Science and Engineering, Harbin University of Science and Technology China ]
• Pengzhan Dong [ School of Materials Science and Engineering, Harbin University of Science and Technology China ]
• Lei Li [ School of Materials Science and Engineering, Harbin University of Science and Technology China ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605