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요업학회지 = Journal of the Korean Ceramic Society v.34 no.7, 1997년, pp.758 - 766   피인용횟수: 1

층상 및 섬유상 $Al_2O_3$ 거시복합체의 파괴거동
Fracture Behavior of $Al_2O_3$ Macro-composites with Layered and Fibrous Structure

신동우    (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소   ); 윤대현    (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소   ); 박삼식    (경상대학교 재료공학부 무기복합재료연구실, 첨단소재연구소   ); 김해두    (한국기계연구원 재료기술연구부 요업재료그룹  );
  • 초록

    Non-brittle fracture behaviour of the two composite structures made of two different brittle materials was investigated using 3-point bending test. First, the layered and fibrous macro-composites were fabricated using the material easily formed, yet showing a brittle fracture behaviour similar to ceramics. The layered and fibrous Al2O3 /Al2O3 composites with weak interface were also fabricated using plate of 2 mm thickness and rod of 3 mm diameter respectively. Comparison of the mechanical properties between these two structures was performed in the lights of flexural strength and work of fracture for the composites consisting of Al2O3 and simulated materials respectively. The strength ratio of layered structure to the monolith of same volume was 0.6 and the ratio of fibrous one was about 0.2 for the composites made of simulated brittle material. The ratio of the work of fracture of the fibrous to the layered was 0.47. For Al2O3/Al2O3 composites, the strength ratio of layered and fibrous structures to the monolith with same volume were about 0.6 and 0.2 respectively. The ratio of work of fracture of the fibrous to the layered was 0.6. These confirmed that the layered structure was superior to the fibrous one in terms of flexural strength and work of fracture.


  • 주제어

    Non-brittle ceramic structure .   Layered structure .   Fibrous structure .   $Al_2O_3/Al_2O_3$ composites.  

  • 참고문헌 (18)

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  • 이 논문을 인용한 문헌 (1)

    1. 2001. "Microstructure Orientation of Alumina Laminate Composites" 한국세라믹학회지 = Journal of the Korean Ceramic Society, 38(4): 351~359     

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    3. 1997 "Tribological Behaviour of the Si/SiC and the Si/SiC/Graphite Composites" The Korean journal of ceramics 3 (1): 47~51    
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    5. 1998 "상압소결 ZTA의 분말 성형 공정 최적화" 한국결정성장학회지 = Journal of the Korean crystal growth and crystal technology 8 (2): 356~364    
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    7. 1999 "탄소섬유/Si/SiC 및 탄소섬유/탄소/SiC 복합재의 기계적 물성" 복합재료 : 한국복합재료학회지 = Journal of the Korean Society for Composite Materials 12 (3): 8~16    
    8. 1999 "$WS_2$고체윤활제의 합성 및 구름베어링 적용" 윤활학회지 = Journal of the Korean Society of Tribologists and Lubrication Engineers 15 (1): 77~82    
    9. 1999 "질화규소 세라믹볼의 구름피로수명" 윤활학회지 = Journal of the Korean Society of Tribologists and Lubrication Engineers 15 (2): 150~155    
    10. 1999 "WS2 고체윤활제 개발 및 상품화" 세라미스트 = Ceramist 2 (5): 43~46    
  • Yoon, Dae-Hyun (5)

  • Kim, Hai-Doo (43)

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