Title :
A study of the reliability of brazed AlO3 joint systems
Author :
Hahn, Sangmin ; Kim, Minkee ; Kang, Shinhoo
Author_Institution :
Sch. of Mater. Sci. & Eng., Seoul Nat. Univ., South Korea
fDate :
7/1/1998 12:00:00 AM
Abstract :
Brazing experiments were performed at 830°C for Al2O3/Al2O3 and Al2 O3/Fe-Ni-Co alloy joints, which are used in electronic and structural applications. The brazing was done with Ag-Cu and Ag-Cu-Ti and changes in fracture mode and fracture strength of the Al 2O3-Al2O3 joint were investigated after heat treatment at 400 and 600°C for 100 h. For as-brazed samples, the fracture occurred within Al2O3 , but a long heat exposure at a medium temperature caused the fracture path to move to the joint region. For the ceramic-metal joining, Al2O3/Fe-Ni-Co alloy joints were prepared with a variety of interlayers. Among the interlayer materials, a Mo-Ni double-interlayer provided the highest fracture strength. The fracture strength of the joints was measured and interpreted in terms of microstructure changes
Keywords :
alumina; brazing; ceramics; fracture toughness; heat treatment; reliability; 400 C; 600 C; 830 C; Ag-Cu; Ag-Cu-Ti; Al2O3-Al2O3; Al2O3-FeNiCo; Fe-Ni-Co alloy; Mo-Ni; alumina; brazing; ceramic-ceramic joint; ceramic-metal joint; fracture mode; fracture strength; heat treatment; interfacial microstructure; interlayer material; reliability; Aluminum alloys; Ceramics; Dielectric substrates; Electronic packaging thermal management; Electronics packaging; Heat engines; Heat treatment; Immune system; Metallization; Temperature;
Journal_Title :
Components, Packaging, and Manufacturing Technology, Part C, IEEE Transactions on
DOI :
10.1109/3476.720419
