Microstructural evolution and characterization of interfacial phases in diffusion-bonded SiC/Ta–5W/SiC joints

Li, Huaxin; Shen, Weijian; He, Yanming; Zhong, Zhihong; Zheng, Wenjian; Ma, Yinghe; Yang, Jianguo; Wu, Yucheng

doi:10.1016/j.ceramint.2020.06.028

Cited by 10 publications

(3 citation statements)

References 29 publications

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“…Therefore, despite some porosity of the transition layer (Figure 10), it is the formation of the (Ti,Ta) and (Ti,Ta)B phases that ensure the sample cohesion and integrity. In conditions of diffusion bonding (1000-1500 • C), Ta and Si atoms were found to cover a distance of up to 30 µm from a Ta substrate [49,50]. In this case, the combustion-aided joining of Ta foil with Ti-Si ceramic was reached due to the formation of (Ti, Ta)Si x solid solutions, although the Ti x Si y and Ta x Si y could not be detected by XRD.…”

Section: Setmentioning

confidence: 91%

Ta/Ti/Ni/Ceramic Multilayered Composites by Combustion Synthesis: Microstructure and Mechanical Properties

Камынина

Вадченко

Шкодич

et al. 2021

Metals

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Ta/Ti/Ni/ceramic multilayered composites were successfully prepared by combustion synthesis. Laminated composites Ti–Ta–(Ti + 0.65C)–Ni–(Ti + 1.7B)–(Ti + 1.7B)–Ta–Ni-Ti and 3(Ti + 1.7B)–Ta–(5Ti + 3Si)–Ta–(Ti + 1.7B)–Ta–(5Ti + 3Si)–Ta–3(Ti + 1.7B) were combustion synthesized in an Ar atmosphere using (1) metallic foils (Ti, Ta, Ni) and (2) reactive tapes (Ti + 0.65C), (Ti + 1.7B), and (5Ti + 3Si), which, upon combustion, yielded ceramic layers as starting materials. The microstructure, crystal structure, and chemical composition of multilayered composites were characterized by SEM, EDX, and XRD. Their flexural strength was measured at 1100 °C. Upon combustion, Ta foils turned strongly joined with Ti ones due to the development of high temperature in the reactive layers yielding TiCx and TiBy. The formation of a liquid phase between metallic foils and reactive tapes and mutual interdiffusion between melted components during combustion favored strong joining between refractory metallic foils. Good joining between metals and ceramics is reached due to the formation of thin interfacial layers in the form of cermets and eutectic solutions.

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Section: Setmentioning

confidence: 91%

Ta/Ti/Ni/Ceramic Multilayered Composites by Combustion Synthesis: Microstructure and Mechanical Properties

Камынина

Вадченко

Шкодич

et al. 2021

Metals

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“…The joining methods of SiC ceramic mainly include brazing, 5,6 diffusion bonding 7,8 and reactive bonding. 9 Among them, brazing SiC ceramic can obtain ideal joints at lower temperature and shorter time, and is the most possible joining method to realize mass production.…”

Section: Introductionmentioning

confidence: 99%

Microstructure and properties of SiC ceramic brazed with Zr–Cu composite filler metal

Zhou

Zhang

et al. 2021

RSC Adv.

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“…There is currently a growing interest in the high-temperature interactions of SiC with refractory metals because it is one of the solutions to solve the joining of SiC-based materials issue. Among others, diffusion bonding [13][14][15] or spark plasma sintering [16] techniques are based on the interdiffusion at the SiC/metal interface at high temperatures; therefore, there is a need to deeply characterize and fully assess the chemical interaction between refractory metals and SiC.…”

mentioning

confidence: 99%

High-Temperature Interdiffusion of Tantalum and Niobium with SiC for Processing Hybrid Metal/CMC Components

et al. 2022

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To ensure the leak tightness of SiC/SiC composites cladding, niobium and tantalum have been retained as liner/coating materials for their high melting point, ductility and weldability; however, their chemical compatibility at high temperatures towards SiC remains to be assessed. In the literature, large discrepancies in the composition of the reaction zone and the kinetics were noticed between some metallic liners and SiC. In this work, diffusion couple experiments between Nb and Ta with SiC and SiC/SiC were conducted at high temperatures (1050–1500 °C) to determine the diffusion paths and the reaction kinetics in order to estimate the lifetime of such coatings in nominal conditions. A detailed analysis of the interaction area was conducted as a function of temperature by a combination of experimental characterizations and thermodynamic calculations. No significant difference in the sandwich cladding materials was observed. The interfacial reactivity was found to be strongly higher than expected from literature data. C and Si were evidenced as the main diffusing species in the Nb/SiC and Ta/SiC systems. From the reaction layer thickness extrapolation in gas-cooled fast reactor operating conditions, niobium but especially tantalum have been approved as liner material in hybrid CMC/metal cladding materials from a chemical compatibility point of view.

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Microstructural evolution and characterization of interfacial phases in diffusion-bonded SiC/Ta–5W/SiC joints

Cited by 10 publications

References 29 publications

Ta/Ti/Ni/Ceramic Multilayered Composites by Combustion Synthesis: Microstructure and Mechanical Properties

Ta/Ti/Ni/Ceramic Multilayered Composites by Combustion Synthesis: Microstructure and Mechanical Properties

Microstructure and properties of SiC ceramic brazed with Zr–Cu composite filler metal

High-Temperature Interdiffusion of Tantalum and Niobium with SiC for Processing Hybrid Metal/CMC Components

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