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High Temperature Flexural Strengths of the Ceramic-Metal Brazed Joints

세라믹-금속 브레이징 접합조인트의 고온 접합강도에 관한 연구

  • Lee, Su-Jeong (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Jeong, Myung-Yeong (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Lee, Dai-Gil (Dept. of Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Goo, Hyung-Hoi (Agency for Defense Development)
  • 이수정 (한국과학기술원 기계공학과) ;
  • 정명영 (한국과학기술원 기계공학과) ;
  • 이대길 (한국과학기술원 기계공학과) ;
  • 구형회 (국방과학연구소)
  • Published : 1996.02.01

Abstract

Four point bending tests of the brazed joint composed of sintered silicon nitride and 0.2% carbon steel with Cusil ABA filler which were fabricated at 86$0^{\circ}C$ were performed at temperatures, 25, 100, 200, 300, 400, 50$0^{\circ}C$ From the experiments, the maximum bending strength was measured at 30$0^{\circ}C$ From the 3D FE analysis of the residual stress of the brazed joint, it was revealed that the thermally induced residual stresses were minimized when the environmental temperature was 35$0^{\circ}C$ Considering the degradation of the filler material at high temperatures, it was calculated that the maximum bending strength of the brazed joint occured just below the temperature of the minimum thermal residual stress and the thermal residual stress was the dominative parameter of the brazed joint.

Keywords

Ceramic-Matal Brazed Joint;High Temperature Flexural Test;3 Dim Finite Element Analysis

References

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