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Al₂O₃/低膨脹合金의 接合强度와 應力特異性에 關한 硏究
주재황(J. H. JOO),최영택(Y. T. CHOI),박명균(M. K. PARK),박세만(S. M. PARK),최승규(S. G. CHOI) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_1
In this research, both computational and experimental studies are conducted to reveal mechanical natures of bondings and consequences of joining processes for metals and ceramic pairs. In the computational part of this research a FEM analysis was utilized to effectively evaluate stress fields around ceramic-metal interfaces. Special attentions were paid to consider the low yield strength of interlayer alloys(buffer alloys). For the experimental part the effectiveness of active brazing metal methods was investigated. For the test. four different types of ceramic-metal pairs are fabricated. All the ceramic-metal pairs are brazed in vacuum at 850℃, 900℃ and 950℃. Tensile tests were conducted on the fabricated ceramic-metal pairs to evaluate bond strength between ceramics and metals. The test results show temperature effects and increases in bond strengths which is largely due to the inserted buffer layers(Mo-Mn and Ni Layer).