Microstructure evolution and its effect on the mechanical properties of the ZrC–SiC composite joint diffusion bonded with pure Ni foil

Song, Changbao; Lin, Tiesong; He, Peng; Yang, Weiqi; Jia, Dechang; Feng, Jicai

doi:10.1016/j.ceramint.2013.04.074

Cited by 30 publications

(6 citation statements)

References 39 publications

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“…The thickening of the interface layer creates a wide mismatch in the coefficients of thermal expansion between ceramic and components of the interfacial region. It is inferred that the wide reaction layer deteriorates the joint performance 67 .…”

Section: Resultsmentioning

confidence: 99%

Vacuum brazing of Al2O3 and 3D printed Ti6Al4V lap-joints using high entropy driven AlZnCuFeSi filler

Sharma

Ahn

2021

Sci Rep

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In this work, we studied the brazing characteristics of Al2O3 and 3D printed Ti–6Al–4V alloys using a novel equiatomic AlZnCuFeSi high entropy alloy filler (HEAF). The HEAF was prepared by mechanical alloying of the constituent powder and spark plasma sintering (SPS) approach. The filler microstructure, wettability and melting point were investigated. The mechanical and joint strength properties were also evaluated. The results showed that the developed AlZnCuFeSi HEAF consists of a dual phase (Cu–Zn, face-centered cubic (FCC)) and Al–Fe–Si rich (base centered cubic, BCC) phases. The phase structure of the (Cu–Al + Ti–Fe–Si)/solid solution promises a robust joint between Al2O3 and Ti–6Al–4V. In addition, the joint interfacial reaction was found to be modulated by the brazing temperature and time because of the altered activity of Ti and Zn. The optimum shear strength reached 84 MPa when the joint was brazed at 1050 °C for 60 s. The results can be promising for the integration of completely different materials using the entropy driven fillers developed in this study.

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Section: Resultsmentioning

confidence: 99%

Vacuum brazing of Al2O3 and 3D printed Ti6Al4V lap-joints using high entropy driven AlZnCuFeSi filler

Sharma

Ahn

2021

Sci Rep

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“…The absence of a graphite zone is advantageous for joint strength, as the former reduces the physical strength of a joint owing to poor bonding characteristics. 24,35 In addition, the interaction between graphite and Mo resulting in the formation of Mo 2 C, as well as the limited diffusion of Ni caused by its conversion into Ni 3 Mo 3 C by Mo 2 C, played a pivotal role in inhibiting the development of an IRZ. The aforementioned hypothesis is additionally corroborated by the thermodynamic calculation presented in the Ni-Si (Figure 4A), Mo-C (Figure 6A), and Ni-Mo-C (Figure 6B) phase diagrams, which confirm the feasibility of the formation of δ-Ni 2 Si, Ni 3 Si 2 , Mo 2 C, Ni 3 Mo 3 C, and graphite phases.…”

Section: Microstructural Characterization Of Jointsmentioning

confidence: 99%

Effect of Mo addition on interfacial microstructure and mechanical property of SiC joint brazed by an Ni–Si filler

Kamal,

Shukla,

Shinde

et al. 2024

J Am Ceram Soc.

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Ni‐based alloys provide good brazing filler characteristics for the many applications of SiC ceramics. Nevertheless, the presence of graphite is unavoidable in the reaction between Ni and SiC, leading to a significant degradation of the mechanical properties of the joint. This study investigates the effect of Mo in Ni–30Si alloy on the brazing of SiC at 1300°C, to regulate interfacial reactions and reduce residual stresses by decreasing overall coefficient of thermal expansion (CTE) values throughout the brazing process. The addition of Mo up to 8 at.% efficiently suppresses graphite accumulation by converting it into Mo2C + Ni3Mo3C phases and lowering the CTE to 5.4 × 10−6/°C. When the Mo loading exceeds 12 at.%, the interactions between the filler and SiC are reduced as a result of the non‐homogeneous dispersion of Mo. The experimental findings indicate that the joint without graphite has a lap shear strength of 107 MPa, which is nearly three times greater than the joint with graphite. Thermodynamic analyses are performed to provide a comprehensive understanding of the underlying mechanisms responsible for the formation of distinct phases in brazed joints.

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“…However, more attention has been paid to the joining of ZrB 2 base ceramics and only a few studies on UHTCs like ZrC base [11][12][13], HfC base [13,14] and HfB 2 base [15,16] ceramics have been reported. Brazing, diffusion bonding [11,12], transient-liquidphase (TLP) bonding [13][14][15] and inorganic glass interlayer joining [17] methods have been explored to join UHTCs. Brazing, due to its few limits of joints structure and joining pressure, has become the most explored method for joining UHTCs for practical applications.…”

Section: Introductionmentioning

confidence: 98%

Brazing of ZrB2–SiC–C ceramic and GH99 superalloy to form reticular seam with low residual stress

Tian

Feng

Shi

et al. 2015

Ceramics International

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Microstructure evolution and its effect on the mechanical properties of the ZrC–SiC composite joint diffusion bonded with pure Ni foil

Cited by 30 publications

References 39 publications

Vacuum brazing of Al2O3 and 3D printed Ti6Al4V lap-joints using high entropy driven AlZnCuFeSi filler

Vacuum brazing of Al2O3 and 3D printed Ti6Al4V lap-joints using high entropy driven AlZnCuFeSi filler

Effect of Mo addition on interfacial microstructure and mechanical property of SiC joint brazed by an Ni–Si filler

Brazing of ZrB2–SiC–C ceramic and GH99 superalloy to form reticular seam with low residual stress

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