多層晶片陽極鍵合界面結(jié)構(gòu)及力學(xué)性能研究
[Abstract]:BF glass has good heat resistance, optical properties, chemical stability and mechanical properties. In the field of MEMS device fabrication and packaging, BF glass is usually connected to semiconductor, metal and other materials in order to realize the microsensor. Packaging technology of microflow pump and other devices. Anodic bonding is the most commonly used technique to connect glass with the above mentioned materials. In this paper, the connection of Si-glass-Si-Al-glass-Si and glass-Ni at low temperature in atmosphere is realized by means of anode bonding technique and electric field inversion. The effects of process parameters on interface structure and mechanical properties are studied. It is found that: (1) by using anodic bonding process, the bonding process of Si-glass-Si (1) -glass can be realized by a single electric field inversion, and Na precipitates on the glass surface. The formation of Na depletion layer in vitreous near the junction interface has two different spatial regions, "high field intensity" and "low field intensity". Two peak currents occurred in the bonding process of Si (2) -glass interface under the influence of the first bonding interface. (2) Al-glass-Al and Al-glass-Si samples were prepared by anodic bonding technique. As Al3 diffuses to the Na depletion layer, the second interface bond current does not show two peak currents. The reverse electric field decreases the bonding rate of Al (1) -glass interface, but does not destroy the interfacial strength of Al-glass-Al interface, which is higher than that of Al-glass-Si interface, and the fracture occurs along the second bonding interface. (3) Al foil is used as the transition layer for the first time. The low temperature brazing bonding between glass and Ni is realized in the atmosphere. The typical interface structure is: 1 / glass / Al / Al\ +\ {8ZnSn\}\% Ni3Sn2 / Ni. The tensile test results show that the fracture occurs in the glass, indicating that the interface bond is good, and the interface strength is higher than the strength of the base metal.
【學(xué)位授予單位】:太原理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:TH-39;TG454
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