Advancement of brazing filler alloy: An overview

Roy, Rajat; Ghosh, Mainak

doi:10.1016/b978-0-323-85399-6.00012-6

Cited by 3 publications

(3 citation statements)

References 38 publications

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“…However, when both the contents of In and Ga increase to 3 wt%, the In content in the eutectic structure of the brazed joint reaches 7.71 wt%. Combined with the XRD results of the Ag10CuZnSn-3In-3Ga filler metal, it can be inferred that there are Cu 4 In IMCs in this eutectic structure, which will become crack sources and decrease the mechanical properties of the brazed joint [31].…”

Section: Effects Of In and Ga On Microstructure Of Ag10cuznsn/304 Sta...mentioning

confidence: 95%

Effects of In and Ga on Spreading Performance of Ag10CuZnSn Brazing Filler Metal and Mechanical Properties of the Brazed Joints

Zhang,

Xu,

et al. 2023

Crystals

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Ag-based brazing filler metals are preferred in many industries, but the high price of Ag restricts their wider application. Therefore, developing novel low-Ag brazing filler metals has aroused extensive interest. In this study, the effects of the In and Ga elements on the melting behavior and spreading property of Ag10CuZnSn filler metal and the microstructure and strength of the brazed joints were investigated. The results show that both In and Ga can significantly decrease the solidus and liquidus temperatures of the filler metal. The In element can dissolve into the liquid filler metal and the Ga element can decrease the surface tension of the melted filler metal, which, in turn, improves the spreading area. The In element prefers to dissolve into the Ag-rich phase, and the Ga element prefers to dissolve into the Cu-rich phase; both improve the strength of the filler metal through solid-solution strengthening. The shear strength of the 304 stainless-steel brazed joint reached a peak value of 396 MPa when the Ag10CuZnSn-1.5In-2Ga (wt%) filler metal was used. However, the excessive addition of In and Ga forms brittle intermetallic compounds (IMCs) in the brazing seam, which decreases the strength of the brazed joint.

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Section: Effects Of In and Ga On Microstructure Of Ag10cuznsn/304 Sta...mentioning

confidence: 95%

Effects of In and Ga on Spreading Performance of Ag10CuZnSn Brazing Filler Metal and Mechanical Properties of the Brazed Joints

Zhang,

Xu,

et al. 2023

Crystals

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“…Because this method's connecting area is extremely thin, it requires a precise joining technique with the proper heat input to produce a nearly net-shaped component. In this regard, a proper brazing filler alloy provides particular qualities such as sufficient wetting, low thickness, a narrow melting zone, prevention of intermetallic formation, and a restricted amount of stress development at the joint interface (Roy R.K., and Ghosh M., 2022). Brazing's main benefit in contemporary production is its ability to create strong bonds, with parent materials that are similar or completely different with negligible alteration of the contact materials (Way M. et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Corrosion Characterisation of Brazing Ag59Cu31Pd10 Alloy for Potential Dental Applications

Dimitrijević,

Kovačević

et al. 2024

Metall Mater Data

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This research addresses the corrosion behaviour of the Ag-based alloy with Pd as the component in three different corrosion environments: standard physiological saline solution (SS; 0.9% NaCl), Ringer’s solution (RS), and Fusayama's artificial saliva (AS) at 37 °C. The examination has a primary goal to evaluate the suitability of the alloy as dental material and is used following the electrochemical methods: open circuit potential (OCP), linear polarisation resistance (LRP), and Tafel extrapolation from the potentiodynamic measurement, which is a broad interval of anodic potential. Chemical analysis of the RS after recording a polarisation curve was also a significant part of the study. The results showed OCP values from 35 mV to 65 mV and polarisation resistance values (Rp) in the interval from 8.5 up to 19.3 kΩ×cm2. The most corrosive solution was RS, and the least was AS. The corrosion current density in AS was close to 1 μA×cm-2. Although the alloy, in AS particularly, has a relatively high Rp value and OCP close to the Ag alloys with a higher content of noble metals, it has low breakdown potential, which directly led to its classification as an unstable dental material for permanent use. The concentrations of the metals in RS were at ppb levels for Ag, tens of ppb for Pd, and 0.64 mg×dm-3 for Cu. Regardless of the unsatisfactory corrosion characteristics for the application, the paper showed good potential for the Ag-Cu-Pd system as a brazing filler for dental use and as an adequate control for similar studies.

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“…The RE is known as "industrial vitamins", and adding trace amounts of RE can significantly improve various properties of the filler metals [12]. Moreover, composite alloying has been considered to be a more efficient method to optimize the brazing filler metals with the same content of the alloy element [13] because the beneficial effects of each element have a marginal effect, i.e., with increasing content of the alloy element, an increased rate of the "beneficial effect" decreases or even becomes negative. Therefore, the composite addition of trace amounts of alloy elements will be an efficient method to optimize the brazing filler metals.…”

Section: Introductionmentioning

confidence: 99%

Combined Effect of In and Ce on Microstructure and Properties of Ag10CuZnSn Low-Silver Brazing Filler Metals

Xu,

Fu,

Yang

et al. 2023

Crystals

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In this study, trace amounts of In and Ce elements were composite added into a Ag10CuZnSn low-silver brazing filler metal, and the effects of the composite alloying on the solidus and liquidus temperatures, the spreading performance, the microstructure of the filler metal, and the mechanical properties of the joints prepared with these filler metals were studied. The results reveal that the In element can significantly decrease the solidus and the liquidus temperatures of the Ag10CuZnSn alloy, while the Ce element has little effect on the melting temperature. Trace amounts of In and Ce elements can obviously increase the spreading areas of the filler metals on the pure Cu and 304 stainless steel base metals. The In and Ce elements can refine the microstructure of the filler metals. When the contents of In and Ce are 1.5 wt% and 0.15 wt%, respectively, the microstructure refinement effect is the most obvious, and the shear strength of the 304 stainless steel brazed joint also achieves a maximum value of 375 MPa. Excessive addition of In and Ce can form brittle intermetallic compounds in the filler metal, decreasing the brazed joints' shear strength.

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Advancement of brazing filler alloy: An overview

Cited by 3 publications

References 38 publications

Effects of In and Ga on Spreading Performance of Ag10CuZnSn Brazing Filler Metal and Mechanical Properties of the Brazed Joints

Effects of In and Ga on Spreading Performance of Ag10CuZnSn Brazing Filler Metal and Mechanical Properties of the Brazed Joints

Corrosion Characterisation of Brazing Ag59Cu31Pd10 Alloy for Potential Dental Applications

Combined Effect of In and Ce on Microstructure and Properties of Ag10CuZnSn Low-Silver Brazing Filler Metals

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