Effect of Brazing Parameters on the Microstructure and Properties of SiC Ceramic Joint with Zr-Cu Filler Metal

Zhou, Bofang; Wang, Jinfeng; Feng, Keqin; Cai, Yuanwen; Chen, Sitan

doi:10.3390/cryst10020093

Cited by 6 publications

(3 citation statements)

References 18 publications

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“…Zr element is a carbide-forming element. Qi et al [37] and Zhou et al [38] brazed SiC ceramics with filler metals containing Zr element. They suggested the Zr element promoted the metallurgical reactions between the SiC ceramic and the filler metals.…”

Section: Influence Of the Interlayer Chemical Composition On The Join...mentioning

confidence: 99%

Bonding SiCp/Al Composites via Laser-Induced Exothermic Reactions

Wang¹,

Gui²,

Yan³

et al. 2021

Crystals

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In this paper, the SiCp/Al composites were bonded via laser-induced exothermic reactions of a Ni–Al–Zr interlayer. The Ni–Al–Zr interlayer was designed based on its exothermic property and chemical compatibility with the SiCp/Al composites. The influences of the interlayer composition and bonding pressure on the joint microstructure and shear strength were investigated. Results indicated that high exothermic reactions occurred in the Ni–Al–Zr interlayer and realized the reliable bonding with the SiCp/Al composites. The interlayer products were the eutectic structure of NiAl+Ni2AlZr+Ni3Al5Zr2. NiAl3 and Ni2Al3 reaction layers were formed at the bonding interfaces. The interlayer composition and the bonding pressure determined the morphology and distribution of the voids and the reaction layers, thus controlling the joint shear strength. When the SiCp/Al composites were bonded using the interlayer with the Zr content of 15 wt.% under the bonding pressure of 3 MPa, the joint shear strength reached the maximum of 24 MPa.

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Section: Influence Of the Interlayer Chemical Composition On The Join...mentioning

confidence: 99%

Bonding SiCp/Al Composites via Laser-Induced Exothermic Reactions

Wang¹,

Gui²,

Yan³

et al. 2021

Crystals

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“…However, similar to other ceramics, the application of ZTA ceramics would be severely limited by their intrinsic brittleness. The brazing technique is an effective method to solve this problem [6][7][8]. The joining of ZTA ceramic to itself or to metals is helpful in fabricating complex structures and devices that can be used in harsh circumstances, such as hightemperature, corrosion, and oxidation environments.…”

Section: Introductionmentioning

confidence: 99%

Wetting Behavior of the Ag-5CuO Brazing Alloy on ZTA Composite Ceramic with/without CuO Coating in Air

Gui

Liu

et al. 2021

Crystals

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The wetting of Ag-5 wt.% CuO (Ag-5CuO) alloy on initial/CuO-coated zirconia toughened alumina (ZTA) composite ceramic in air was studied in detail. The results showed that the contact angle of the Ag-5CuO/ZTA system rapidly decreased from 81° at 970 °C to 45° at 990 °C during the heating process, however, moderate reductions in contact angle were observed in the subsequent heating and temperature holding stages. In comparison with the contact angle of pure Al2O3, an increment of about 4° of the stable contact angle of Ag-5CuO alloy on the heterogeneous ZTA was observed. The reaction between Al2O3 and CuO can reduce the damage of the CuO-rich liquid to ZrO2 in the ZTA substrate. Both oxygen and CuO were helpful in reducing the contact angle of Ag on ZTA and enhancing the bonding of the Ag/ZTA interface. The continuous CuO coating on ZTA and the monotectic liquid containing more CuO in the region near the triple line induced reductions of more than 40° and about 10° in the contact angle, respectively, between the initial and the CuO coating-improved wetting systems.

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“…The research group innovatively proposed Zr-based ller metal for brazing SiC ceramic, the wetting behavior, brazing process and joining mechanism between 80Zr20Cu (wt%) (Zr-Cu) ller metal and SiC ceramic are mainly investigated, and found that Zr-Cu ller metal can better achieve SiC ceramic brazing, [13][14][15] but due to the great difference of physical properties between Zr-Cu ller metal and SiC ceramic, the joint residual stress is large, which affects the mechanical property. At the same time, as the cladding material of nuclear fuel, SiC ceramic needs to consider the nuclear properties of the ller metal, and the 3rd component is added to Zr-Cu ller metal to form Zr-Cu composite ller metal to improve the related properties of ller metal and brazed joint.…”

Section: Introductionmentioning

confidence: 99%