MU Fengwen, ZOU Guisheng, ZHAO Zhenyu, WU Aiping, YAN Jiuchun, Y. Norman Zhou. Low temperature sintering-bonding through in-situ formation of Ag nanoparticles using micro-scaled Ag2O composite paste[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (4): 38-42.
Citation:
MU Fengwen, ZOU Guisheng, ZHAO Zhenyu, WU Aiping, YAN Jiuchun, Y. Norman Zhou. Low temperature sintering-bonding through in-situ formation of Ag nanoparticles using micro-scaled Ag2O composite paste[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (4): 38-42.
MU Fengwen, ZOU Guisheng, ZHAO Zhenyu, WU Aiping, YAN Jiuchun, Y. Norman Zhou. Low temperature sintering-bonding through in-situ formation of Ag nanoparticles using micro-scaled Ag2O composite paste[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (4): 38-42.
Citation:
MU Fengwen, ZOU Guisheng, ZHAO Zhenyu, WU Aiping, YAN Jiuchun, Y. Norman Zhou. Low temperature sintering-bonding through in-situ formation of Ag nanoparticles using micro-scaled Ag2O composite paste[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2013, (4): 38-42.
Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
2.
State Key Laboratory of Advanced Welding & Joining, Harbin Institute of Technology, Harbin 150001, China
3.
Key Laboratory for Advanced Materials Processing Technology (Ministry of Education), Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China;Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo N2L 3G1, Canada
In order to reduce the cost of using Ag nanoparticle paste as bonding materials in electronic packaging,microscaled Ag2O powders were mixed with triethylene glycol (TEG) to form a paste to replace the Ag particle paste.The reaction mechanism of in-situ formation of Ag nanoparticles,the sintering characteristics of micro-Ag2O paste at low temperature,and the bonding of Ag-coated Cu bulks using this paste were investigated.The results reveal that the Ag2O particles in the paste were more easily transformed into Ag nanoparticles than micro-Ag2O itself,and with increasing the sintering temperature,more Ag nanoparticles formed and grew larger by sintering,accompanied with some gaseous products which could escape easily.The effect of sintering-bonding time on the strength of joints fabricated at 250℃ under a pressure of 2 MPa was analyzed.The average shear strength of the joints increased with sintering-bonding time and reached about 24 MPa when the sintering-bonding time was 5 min.And the microstructure of the fractured surface and the cross-section of typical joints made at 250℃ under 2 MPa were also examined.