CAJ | 학술논문

裂纹是影响电触点使用寿命的主要原因之一，本文对AgSnO2/Cu复合铆钉触点的常见裂纹进行了归纳分析。从裂纹产生的部位来看，复合铆钉触点中的裂纹主要有两类，一类产生于AgSnO2触点层，其起源主要是Ag与SnO2颗粒界面；另一类产生于AgSnO2与Cu的界面，其起源一是结合界面本身，二是AgSnO2触点层裂纹扩展至界面而成。两类裂纹均缩短触点使用寿命，但AgSnO2/Cu界面裂纹危害更大。改善Ag与SnO2颗粒的高温润湿性和提高AgSnO2/Cu界面结合强度是改善复合铆钉触点性能的重要途径。
렬문시영향전촉점사용수명적주요원인지일，본문대AgSnO2/Cu복합류정촉점적상견렬문진행료귀납분석。종렬문산생적부위래간，복합류정촉점중적렬문주요유량류，일류산생우AgSnO2촉점층，기기원주요시Ag여SnO2과립계면；령일류산생우AgSnO2여Cu적계면，기기원일시결합계면본신，이시AgSnO2촉점층렬문확전지계면이성。량류렬문균축단촉점사용수명，단AgSnO2/Cu계면렬문위해경대。개선Ag여SnO2과립적고온윤습성화제고AgSnO2/Cu계면결합강도시개선복합류정촉점성능적중요도경。
Some common causes of cracking, which is one of the primary defects influencing the life of AgSnO2/Cu bimetal layered rivets, are analyzed in this paper. According to the cracking location, two kinds of cracks are found in bimetal rivets. One is formed in the AgSnO2 layer and usually originated from the interface between Ag and SnO2 particles. The other one is formed in the interface between AgSnO2 and Cu. The second one may be originated in the interface itself, or be the propagation in the interface of the cracks originating from the AgSnO2 layer. The second kind of cracks is more harmful, even though both cracks decrease the life of rivets. In order to improve the properties of AgSnO2/Cu bimetal rivets, it is important to increase the wetta-bility between Ag and SnO2 particle at elevated temperature and the bonding strength between of AgSnO2/Cu interface.