Reactive air brazing of YSZ ceramic with novel Al2O3 nanoparticles reinforced Ag-CuO-Al2O3 composite filler: Microstructure and joint properties

Si, Xiaoqing; Cao, Jian; Song, Xiaoguo; Qu, Yang; Feng, Jicai

doi:10.1016/j.matdes.2016.10.062

Cited by 60 publications

(24 citation statements)

References 45 publications

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“…In order to reduce the CTE mismatch and thus relieve the residual stress in the joints, the proposed method for adding low CTE materials (fibers or particles) into filler alloy has been executed. Currently, extensive researches have introduced Mo particles, 15 nano-Si 3 N 4 particles, 16 nano-Al 2 O 3 particles, 17,18 etc. into the ceramic/ceramic or ceramic/ metal brazing system.…”

Section: The Poor Wettability Of Most Metal On Ceramic Surfacementioning

confidence: 99%

“…AgCuTi alloy, due to the good metallurgical bonding with most ceramics and high-plasticity, has exhibited the outstanding capability for brazing ceramic to metal in recent years. Currently, extensive researches have introduced Mo particles, 15 nano-Si 3 N 4 particles, 16 nano-Al 2 O 3 particles, 17,18 etc. 13 AgCuTi brazing filler metal can alleviate the residual stress through its good plastic deformation, but it also can induce the large CTE mismatch in the brazing couples due to high CTE (CTE AgCuTi : 18.2 × 10 −6 /K) 13,14 , which is deleterious to the mechanical soundness of the brazed joint.…”

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confidence: 99%

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In‐situ synthesis of TiC nanoparticles during joining of SiC ceramic and GH99 superalloy

et al. 2019

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Section: The Poor Wettability Of Most Metal On Ceramic Surfacementioning

confidence: 99%

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confidence: 99%

In‐situ synthesis of TiC nanoparticles during joining of SiC ceramic and GH99 superalloy

et al. 2019

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“…The method uses filler metal which contains a noble metal and an oxide component, possessing superior high-temperature oxidation resistance. Due to its good wettability, the RAB filler alloy system, especially Ag-CuO system, has received considerable attention in joining oxide ceramics [26][27][28][29][30]. Recently, some research has also focused on the RAB joining of metal-ceramic using Ag-CuO fillers, confirming the possibility of applying this method to metal brazing [31,32].…”

Section: Introductionmentioning

confidence: 99%

Reactive Air Brazing of TiAl Alloy Using Ag-CuO: Microstructure and Joint Properties

Yang

et al. 2021

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TiAl alloy was successfully brazed with Ag-CuO filler in air atmosphere under simple technical conditions. The wettability of a series of Ag-CuO fillers on TiAl was analyzed. Ag-2mol%CuO filler possessed good wetting behavior on TiAl alloy. The microstructure and mechanical properties of the brazed joints were investigated. Oxide layers can be found on both sides, which can be divided into external TiO2-rich layer and internal Al2O3-rich layer. The maximum shear strength of the joint was obtained at 1020 °C holding for 20 min.

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“…Glass/glass-ceramic bonding and reactive air brazing (RAB) are currently two promising methods to join cells to interconnects [22][23][24]. For the glass/glass-ceramic materials, their composition can be tailored to match the thermomechanical requirements of the SOFC/SOEC stack components [25][26][27].…”

Section: Introductionmentioning

confidence: 99%

Joining 3YSZ Electrolyte to AISI 441 Interconnect Using the Ag Particle Interlayer: Enhanced Mechanical and Aging Properties

Wang

et al. 2021

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Reactive air brazing has been widely used in fabricating solid oxide fuel/electrolysis cell (SOFC/SOEC) stacks. However, the conventional Ag–CuO braze can lead to (I) over oxidation at the steel interconnect interface caused by its adverse reactions with the CuO and (II) many voids caused by the hydrogen-induced decomposition of CuO. The present work demonstrates that the Ag particle interlayer can be used to join yttria-stabilized zirconia (YSZ) electrolytes to AISI 441 interconnect in air instead of Ag–CuO braze. Reliable joining between YSZ and AISI 441 can be realized at 920 °C. A dense and thin oxide layer (~2 μm) is formed at the AISI 441 interface. Additionally, an interatomic joining at the YSZ/Ag interface was observed by TEM. Obtained joints displayed a shear strength of ~86.1 MPa, 161% higher than that of the joints brazed by Ag–CuO braze (~33 MPa). After aging in reducing and oxidizing atmospheres (800 °C/300 h), joints remained tight and dense, indicating a better aging performance. This technique eliminates the CuO-induced issues, which may extend lifetimes for SOFC/SOEC stacks and other ceramic/metal joining applications.

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Reactive air brazing of YSZ ceramic with novel Al2O3 nanoparticles reinforced Ag-CuO-Al2O3 composite filler: Microstructure and joint properties

Cited by 60 publications

References 45 publications

In‐situ synthesis of TiC nanoparticles during joining of SiC ceramic and GH99 superalloy

In‐situ synthesis of TiC nanoparticles during joining of SiC ceramic and GH99 superalloy

Reactive Air Brazing of TiAl Alloy Using Ag-CuO: Microstructure and Joint Properties

Joining 3YSZ Electrolyte to AISI 441 Interconnect Using the Ag Particle Interlayer: Enhanced Mechanical and Aging Properties

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