Active Brazing of Alumina and Copper with Multicomponent Ag-Cu-Sn-Zr-Ti Filler
نویسندگان
چکیده
The study was designed to investigate the synergic effect of Ti and Sn in active metal brazing Al2O3 ceramic copper brazed, using multicomponent Ag-Cu-Zr filler alloy. Numerous fine hexagonal-shaped rod-like ternary intermetallic (Zr, Ti)5Sn3 phase (L/D = 5.1 ± 0.8, measured microns) were found dispersed Ag-Cu matrix Ag-18Cu-6Sn-3Zr-1Ti alloy, along with CuZrSn phases. An approximate 15° reduction contact angle 3.1 °C melting point are observed upon incorporation Ag-18Cu-3Zr filler. Interestingly, interface microstructure Al2O3/Cu joints brazed by shows a double reaction layer: discontinuous Ti-rich layer consisting (Cu, Al)3(Ti, Zr)3O, TiO, in-situ Cu-(Ti, Zr) precipitates on side continuous Zr-rich ZrO2 side. shear strength achieved is 31% higher, compared Ag-18Cu-6Sn-3Zr Failure analysis reveals composite fracture mode indicating strong bonding Al2O3/Ag-18Cu-6Sn-3Zr-1Ti filler/Cu joints. findings will be helpful towards development high entropy fillers future.
منابع مشابه
Wettability of Brazing Filler Metals on Copper and Copper Alloys
The possibility of alloying can not be avoided at the interface between molten brazing filler metal and base metal in brazing, so the wettability of brazing filler metal can not be easily explained theoretically. We used the original apparatus for wettability test and investigated the relation between the wettability of brazing filler metals of Ag-P-Cu and Ag-Cu-Zn-Cd systems on copper and the ...
متن کاملInvestigation on effect of holding time in brazing of steel to cemented carbide using Cu-Ag alloy filler metal
Nowadays, cemented carbides-steels joints by brazing method are taken into consideration. One of the problems of these joints is the creation residual stresses that can reduce it with choose correct parameters of brazing. In this study, Silver base alloy filler containing copper, zinc and cadmium have been used in temperature 780°C and the effect of time parameter 5, 10 and 15 minutes on micros...
متن کاملInvestigation on effect of holding time in brazing of steel to cemented carbide using Cu-Ag alloy filler metal
Nowadays, cemented carbides-steels joints by brazing method are taken into consideration. One of the problems of these joints is the creation residual stresses that can reduce it with choose correct parameters of brazing. In this study, Silver base alloy filler containing copper, zinc and cadmium have been used in temperature 780°C and the effect of time parameter 5, 10 and 15 minutes on micros...
متن کاملElectroconductive Composites from Polystyrene Block Copolymers and Cu–Alumina Filler
Technological advancements and development of new materials may lead to the manufacture of sustainable energy-conducting devices used in the energy sector. This research attempts to fabricate novel electroconductive and mechanically stable nanocomposites via an electroless deposition (ELD) technique using electrically insulating materials. Metallic Cu is coated onto Al₂O₃ by ELD, and the prepar...
متن کاملFormation of Ti-Zr-Cu-Ni bulk metallic glasses
Formation of bulk metallic glass in quaternary Ti-Zr-Cu-Ni alloys by relatively slow cooling from the melt is reported. Thick strips of metallic glass were obtained by the method of metal mold casting. The glass forming ability of the quaternary alloys exceeds that of binary or ternary alloys containing the same elements due to the complexity of the system. The best glass forming alloys such as...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Metals
سال: 2021
ISSN: ['2075-4701']
DOI: https://doi.org/10.3390/met11030509