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NTIS 바로가기마이크로전자 및 패키징 학회지 = Journal of the Microelectronics and Packaging Society, v.24 no.1, 2017년, pp.17 - 25
정도현 (서울시립대학교 신소재공학과) , 노명환 (서울시립대학교 신소재공학과) , 이준형 ((주)덕산하이메탈) , 김경흠 ((주)덕산하이메탈) , 정재필 (서울시립대학교 신소재공학과)
Recently, research and application for a power module have been actively studied according to the increasing demand for the production of vehicles, smartphones and semiconductor devices. The power modules based on the transient liquid phase (TLP) technology for bonding of power semiconductor devices...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
TLP 접합의 장점과 특성은? | TLP 접합은 고온특성이 필요한 내열합금이나 스테인리스강 등 구조용 합금의 접합에 많이 적용되어 왔다. 16-20) 이 기술은 접합 후 형태 변화를 크게 감소시킬 수 있는 장점으로 인해 이종금속간 접합이 용이하고, 열영향부 (heat effect zone, HAZ) 가 작은 특성이 있다. 또한, 종래의 브레이징(brazing)이나 확산접합(diffusion bonding)의단점을 해결한 접합법으로, 고온에서 접합강도는 모재와 거의 동등한 수준을 나타낸다. | |
TLP 접 합이란? | 모재를 용융시키지 않고 2개의 물질을 접합하여 우수한 강도를 확보할 수 있는 기술에는 고상확산법(solid diffusion bonding), 마찰교반용접법(Friction Stir Welding) 및 천이액상확산접합기술(이후 TLP 접합) 등이 있다. 그중에서도 1950년대 Lynch 등에 의해 처음 소개된 TLP 접 합은 고상 확산법과 브레이징법의 장점만을 조합시킨 것으로써, 접합과정 중 접합계면에 일시적(transient)으로 액상을 형성시킨 후(브레이징), 접합 온도를 계속 유지하면 (확산접합) 삽입금속중의 융점저하원소가 액상에서 모재 쪽으로 확산함에 따라 삽입금속의 융점이 상승하여, 액상이 접합 온도에서 등온응고가 발생하면서 접합되는 기술이다. TLP 접합은 고온특성이 필요한 내열합금이나 스테인리스강 등 구조용 합금의 접합에 많이 적용되어 왔다. | |
TLP 접합은 주로 어디에 적용되는가? | 그중에서도 1950년대 Lynch 등에 의해 처음 소개된 TLP 접 합은 고상 확산법과 브레이징법의 장점만을 조합시킨 것으로써, 접합과정 중 접합계면에 일시적(transient)으로 액상을 형성시킨 후(브레이징), 접합 온도를 계속 유지하면 (확산접합) 삽입금속중의 융점저하원소가 액상에서 모재 쪽으로 확산함에 따라 삽입금속의 융점이 상승하여, 액상이 접합 온도에서 등온응고가 발생하면서 접합되는 기술이다. TLP 접합은 고온특성이 필요한 내열합금이나 스테인리스강 등 구조용 합금의 접합에 많이 적용되어 왔다. 16-20) 이 기술은 접합 후 형태 변화를 크게 감소시킬 수 있는 장점으로 인해 이종금속간 접합이 용이하고, 열영향부 (heat effect zone, HAZ) 가 작은 특성이 있다. |
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