Effects of brazing temperature on microstructure and mechanical performance of Al2O3/AgCuTi/Fe–Ni–Co brazed joints

Cao, Ya; Jin, Yan; Li, Ning; Zheng, Yi; Xin, Chenglai

doi:10.1016/j.jallcom.2015.07.237

Cited by 42 publications

(7 citation statements)

References 18 publications

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“…Additionally, the formation of TiFe 2 and TiNi 3 compounds partially consumed Ti, which reduced the activity of Ti. As a result, the thickness of the reaction layer formed adjacent to the ceramic substrate was reduced, which was harmful to the strength of the joints . Vianco et al pointed out that the weakest part of the entire Al 2 O 3 /AgCuTi/Kovar joint was the interface between the brazing seam and Al 2 O 3 in all cases.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints

Wang

Jin

Yang

et al. 2018

Int J Applied Ceramic Tech

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Al2O3 ceramic and Kovar alloy brazed joints were achieved using three types of Ag‐based interlayers: a AgCuTi foil, a AgCuTi/Cu foil/AgCuTi multi‐interlayer and a AgCuTi/Cu foam/AgCuTi multi‐interlayer. The effects of the addition of Cu interlayers on the interfacial microstructure and mechanical properties of Al2O3/AgCuTi/Kovar brazed joints were investigated. When Kovar alloy and Al2O3 ceramic were brazed with 50 μm Cu foil at 900°C for 10 minutes, the Cu foil was completely dissolved in the liquid filler. A nearly continuous Cu layer remained in the joint when the thickness of the Cu foil reached 100 μm under the same brazing conditions. With the increase in Cu foil thickness, the thickness of Ti–O compounds + Ti3Cu3O reaction layer formed nearby the Al2O3 ceramic first increased and then remained the same. The Al2O3/Kovar joints brazed with 100 μm Cu foil at 900°C for 10 minutes showed a maximum shear strength of 138 MPa. A low brazing temperature was beneficial to maintain the original structure of the Cu foam. Furthermore, when the joints were brazed at 880°C for 10 minutes, the average shear strength of the Al2O3/AgCuTi/Cu foam/AgCuTi/Kovar joints was 140 MPa, which was 30 MPa higher than that of a single AgCuTi interlayer.

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Section: Introductionmentioning

confidence: 99%

Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints

Wang

Jin

Yang

et al. 2018

Int J Applied Ceramic Tech

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“…TiO could serve as a "bridge" to join the filler metal to the ceramic substrate strongly, which coincided with the results reported in Refs. [38][39][40][41][42][43][44][45].…”

Section: The Wetting Phenomena Of Sn-3ti/sapphirementioning

confidence: 99%

Interfacial Microstructure and Mechanical Properties of Titanium/Sapphire Joints Brazed with AuSn20 Filler Metal

et al. 2022

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In this study, C-plane (0001) sapphire was successfully brazed to titanium using AuSn20 filler metal, following metallization on the surface of the sapphire with Sn-3Ti (wt.%). At 1000 °C, Sn-3Ti had good wettability on the surface of the sapphire, with the lowest equilibrium contact angle of 57°. The reaction phases in the joints were identified, and the typical interfacial microstructure of the brazed joint brazed at 550 °C for 30 min was titanium substrate/Au-Sn-Ti layer/Ti6Sn5 + AuSn2 + AuSn4 + massive Au-Sn-Ti/TiO phase/sapphire. The shear test was utilized to evaluate the bonding strength of the titanium/sapphire joints. The highest shear strength reached 18.7 MPa when brazed at 550 °C for 35 min. The crack was initiated at the sapphire/brazing seam interface and propagated into the Au-Sn-Ti reaction layer.

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“…Composites are used in automotive and aerospace industries, in machining as a material for cutting tools and for bioma-terials applications because of their promising features such as high hardness, amazing wear resistance and sensible chemical stability. Composites are also used in many different applications due to the connection of their high strength and hardness [1,[3][4][5][6][7]. The review of specialist literature on ceramic-metal composites fabricated using the Pulse Plasma Sintering (PPS) technique shows that they are widely used in the electronics industry, e.g.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and mechanical properties of Al2O3-Cu-Ni hybrid composites fabricated by slip casting

Zygmuntowicz

Falkowski

Wachowski

et al. 2020

PAC

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This work focuses on developing the fabrication method of hybrid composites based on Al 2 O 3-Cu system with the addition of nickel phase. The composites were prepared by slip casting and the slurries with a high concentration of solid content were used. The sintered composites were characterized by XRD, SEM and EDX. Selected physical proprieties, namely hardness, fracture toughness and bending strength were also determined. The microstructure and its influence on the mechanical properties were investigated. XRD analyses revealed that the obtained composites contained Al 2 O 3 , Ni, Cu and solid solution CuNi phases. The use of slip casting method allowed the production of the composites characterized by relative density of ∼96%. An increase in metallic phase concentration caused a decrease in Vickers hardness and increased the fracture toughness of the Al 2 O 3-Cu-Ni materials compared to the Al 2 O 3 samples. The results with high cognitive value and application potential were obtained. This research enabled the foundations of an innovative method of forming hybrid composite structures, which combined the best features of ceramics (hardness, resistance to high temperature) with metal properties (crack resistance, good electrical conductivity). This type of composite can be used for temperature, conductivity and flow sensors.

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Effects of brazing temperature on microstructure and mechanical performance of Al2O3/AgCuTi/Fe–Ni–Co brazed joints

Cited by 42 publications

References 18 publications

Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints

Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints

Interfacial Microstructure and Mechanical Properties of Titanium/Sapphire Joints Brazed with AuSn20 Filler Metal

Microstructure and mechanical properties of Al2O3-Cu-Ni hybrid composites fabricated by slip casting

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Effects of brazing temperature on microstructure and mechanical performance of Al2O3/AgCuTi/Fe–Ni–Co brazed joints

Cited by 42 publications

References 18 publications

Effects of Cu interlayers on the microstructure and mechanical properties of Al2O3/AgCuTi/Kovar brazed joints

Effects of Cu interlayers on the microstructure and mechanical properties of Al2O3/AgCuTi/Kovar brazed joints

Interfacial Microstructure and Mechanical Properties of Titanium/Sapphire Joints Brazed with AuSn20 Filler Metal

Microstructure and mechanical properties of Al2O3-Cu-Ni hybrid composites fabricated by slip casting

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Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints

Effects of Cu interlayers on the microstructure and mechanical properties of Al₂O₃/AgCuTi/Kovar brazed joints