Pre-infiltration and brazing behaviors of Cf/C composites with high temperature Ti Si eutectic alloy

He, Zongjing; Li, Chun; Qi, Junlei; Huang, Yongxian; Feng, Jicai; Cao, Jian

doi:10.1016/j.carbon.2018.08.021

Cited by 48 publications

(5 citation statements)

References 47 publications

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“…As reported in the Ref. [ 53 ], the mixed fracture surface presented the high brazed joint strength. According to Figure 10E such fracture initiated from SiC ceramic and propagated to the near brazing seam region.…”

Section: F I G U R E 8 Microstructures Of (A-e)supporting

confidence: 74%

“…Nevertheless, the higher brazing temperature of 870°C and 880°C promoted the further dissolution and diffusion of Ni. [ 53 ], the mixed fracture surface presented the high brazed joint strength. Ti 2 Ni with the CTE of 4.048 × 10 −5 /K destroyed the CTE gradient layers structure, 50 thereby inducing the stress concentration in the joints.…”

Section: F I G U R E 8 Microstructures Of (A-e)mentioning

confidence: 90%

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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: F I G U R E 8 Microstructures Of (A-e)supporting

confidence: 74%

Section: F I G U R E 8 Microstructures Of (A-e)mentioning

confidence: 90%

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

et al. 2019

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“…As reviewed by Liu et al (Ref 8), a pressure-less process was developed to join SiC f /SiC using carbonaceous mixtures as interlayers with a second step consisting of liquid Si infiltration by reaction forming/bonding mechanisms. In this context, several examples are reported in the literature on the use of Sibased alloys as brazing filler materials for promoting successfully joining processes of C f /SiC and SiC f /SiC composites by means of interaction mechanisms that control the manufacturing of tailored MMCs and CMCs via capillary and reactive melt infiltration (Ref [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Studies of the Joining-Relevant Interfacial Properties in the Si-Ti/C and Si-Ti/SiC Systems

Giuranno

Sobczak

Bruzda

et al. 2020

J. of Materi Eng and Perform

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Reactive melt infiltration of Si-based alloys into C preforms and SiC/C composites may be an affordable alternative route to fabricate highly performant lightweighting metal matrix and ceramic matrix composites (CMCs), as well as to obtain reliable and long-term stable joints. In order to optimize reactive infiltration process and to tailor the joint microstructures, the knowledge of interfacial phenomena including thermodynamics, kinetics and surface properties of involved phases (i.e., metals and ceramics) as well as wettability and reactivity occurring between dissimilar materials is of crucial importance. In the present work, the feasibility study of a novel brazing method using Si-Ti alloys as filler for SiC f /SiC is reported and supported by the analysis of microstructural evolution and interfacial phenomena observed during the joining process. Namely, the CMC joining was successfully obtained via the reactive infiltration approach. The results obtained were critically discussed and compared with the know-how coming from the previously carried out investigations on the wetting and reactivity of Si-Ti melts in contact with glassy-C and HIP-SiC substrates. In particular, the microstructural evolution of the Si-Ti/C and Si-Ti/SiC interfaces during wetting tests and at the joint of CMC parts was analyzed and related to the operating conditions. Keywords aerospace, automotive and transportation, brazing, ceramics matrix, composites, intermetallic, joining This article is an invited submission to JMEP selected from presentations at the Symposium ''Joining and Related Technologies,'' belonging to the topic ''Processing'' at the European Congress and Exhibition on Advanced Materials and Processes (EUROMAT 2019), held September 1-5, 2019, in Stockholm, Sweden, and has been expanded from the original presentation.

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“…A few previous attempts to use Si-rich Si-Ti alloys (hereafter Si-Ti alloys), including liquid TiSi 2 and Si-rich eutectic (i.e., Si-16at%Ti) alloys, as brazers and densifying materials for CMCs are available in the literature [18][19][20][21][22][23][24][25][26][27][28][29], even reported by the authors of [30]. Specifically, the use of liquid Si-Ti eutectics for joining monolithic SiC and C f /C, C f /C-SiC, and SiC f /SiC composites at T ≤ 1420 • C without any or negligible degradation of the fiber/matrix interfaces in the composite materials is reported in [23,26,30]. Moreover, the joints produced showed an absence of defects or debonding phenomenon, and a welladherent layer appeared at the metal matrix/fiber interphase.…”

Section: Introductionmentioning

confidence: 99%

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

et al. 2021

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To properly design and optimize liquid-assisted processes, such as reactive infiltration for fabricating lightweight and corrosion resistant SiC/TiSi2 composites, the extensive knowledge about the interfacial phenomena taking place when liquid Si-rich Si-Ti alloys are in contact with glassy carbon (GC) is of primary importance. To this end, the wettability of GC by two different Si-rich Si-Ti alloys was investigated for the first time by both the sessile and pendant drop methods at T = 1450 °C. The results obtained, in terms of contact angle values, spreading kinetics, reactivity, and developed interface microstructures, were compared with experimental observations previously obtained for the liquid Si-rich Si-Ti eutectics processed under the same operating conditions. As the main outcome, a different Si content did not seem to affect the final contact angle values. Contrarily, the final developed microstructure at the interface and the spreading kinetics were observed as weakly dependent on the composition. From a practical point of view, Si-Ti alloy compositions with a Si content falling in the simple eutectic region of the Si-Ti phase diagram might be potentially used as infiltrating materials of C- and SiC-based composites.

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Pre-infiltration and brazing behaviors of Cf/C composites with high temperature Ti Si eutectic alloy

Cited by 48 publications

References 47 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

Studies of the Joining-Relevant Interfacial Properties in the Si-Ti/C and Si-Ti/SiC Systems

Interface Design in Lightweight SiC/TiSi2 Composites Fabricated by Reactive Infiltration Process: Interaction Phenomena between Liquid Si-Rich Si-Ti Alloys and Glassy Carbon

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