Fabrication of ultra high temperature ceramic matrix composites using a reactive melt infiltration process

Kütemeyer, Marius; Schomer, Laura; Helmreich, Thomas; Rosiwal, Stefan; Koch, Dietmar

doi:10.1016/j.jeurceramsoc.2016.04.039

Cited by 45 publications

(29 citation statements)

References 32 publications

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“…Several groups have begun to investigate UHTC-based composites. [64][65][66][67][68][69][70] Some of the continuing technical challenges include formulating liquid/polymer-based precursors for UHTC matrices, producing fibers capable of withstanding extreme conditions, synthesizing high purity UHTC powders with controlled particle sizes for infiltration processing, and increasing the elastic modulus of available fibers to promote load transfer from the brittle UHTC matrix to the reinforcing fiber.…”

Section: Continuing Challengesmentioning

confidence: 99%

Ultra-high temperature ceramics: Materials for extreme environments

2017

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This paper identifies gaps in thepresent state of knowledge and describes emerging research directions for ultra-high temperature ceramics. Borides, carbides, and nitrides of early transition metals such as Zr, Hf, Nb, and Ta have the highest melting points of any known compounds, making them suitable for use in extreme environments.Studies of synthesis, processing, densification, thermal properties, mechanical behavior, and oxidation of ultra-high temperature ceramics have generated a substantial base of knowledge, but left unanswered questions. Emerging research directions include testing/characterization in extreme environments, composites, computational studies, and new materials.

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Section: Continuing Challengesmentioning

confidence: 99%

Ultra-high temperature ceramics: Materials for extreme environments

2017

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“…Evaporation of the B 2 O 3 , as shown by TG measurements, does need to be compensated by additional B 2 O 3 and fast heating rates above 1400 • C. Additional investigations will show, whether B 2 O 3 does infiltrate as a liquid into the pore system or as a gas phases upon evaporation. Compared to UHTCMC infiltrated by Kütemeyer et al [9], carbon fibres in this work have been coated with 2 mm TiB 2 instead of 4 mm. Therefore, more fibres are degraded during RMI, forming a matrix dominant behaviour.…”

Section: Discussionmentioning

confidence: 99%

“…In addition to contact angles, viscosity of the melts influences infiltration. Figure 6 [9]. Each sample is heated separate from the melt and upon reaching 1500 • C is lowered into the melt.…”

Section: Reactive Melt Infiltrationmentioning

confidence: 99%

Influence of zirconium-based alloys on manufacturing and mechanical properties of ultra high temperature ceramic matrix composites

Kütemeyer

Helmreich

Rosiwal

et al. 2018

Advances in Applied Ceramics

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For the continuous development of ultra high temperature ceramic matrix composites manufactured using reactive melt infiltration (RMI), the influence of three different melt alloys and two preform routes on mechanical behaviour and melt infiltration is investigated. Contact angle and viscosity measurement are performed to describe the melt infiltration process. The purpose of these experiments is to further understand the RMI process and increase the mechanical performance of the material. The infiltration height of molten metals within capillary systems depends on the measured contact angles and viscosity as well as the different phases present in the preform, matrix and fibre coating. In order to successfully maintain mechanical performance, minimal reactivity between the melt and coating/fibres is desired. Resulting phase formations, for each manufacturing step, are investigated and analysed using SEM, EDX and XRD. Mechanical performance is determined using flexural strength by three-point-bending, achieving close to 400 MPa with 0/90 • fabrics.

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“…Sample preforms contained boron powder, forming ZrB 2 with Zr 2 Cu during melt infiltration. Depending on the precursors used, the composition of the infiltrated samples varied in the amount of ZrC and ZrB 2 [25]. Finally, both SiC f and C f /ZrB 2 UHTCMCs, coupling conventional impregnation techniques with sintering by hot pressing were recently fabricated [26][27][28][29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Introduction to H2020 project C³HARME – next generation ceramic composites for combustion harsh environment and space

Sciti

Silvestroni

Monteverde

et al. 2018

Advances in Applied Ceramics

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There is an increasing demand for advanced materials with enhanced temperature capability in highly corrosive environments, for instance enable space vehicles to resist several launches and re-entries. The EU-funded project C 3 HARME aims at combining the best features of CMCs and UHTCs to design, develop, manufacture and qualify a new class of Ultra-High Temperature Ceramic Matrix Composite (UHTCMCs) with self-healing capabilities. Applications selected to implement the new materials are near-zero erosion nozzles and near-zero ablation thermal protection systems. This paper aims at giving an introduction to the challenges addressed by C 3 HARME project including (i) the integration between well-established and novel techniques for CMCs and UHTCs production, (ii) the need for very high temperature characterisation, (iii) the meaning of self-healing capability for UHTCMCs, (iv) the contribution of modelling to materials development and (V) the investigation of the microstructure/ thermo-mechanical property correlations.

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Fabrication of ultra high temperature ceramic matrix composites using a reactive melt infiltration process

Cited by 45 publications

References 32 publications

Ultra-high temperature ceramics: Materials for extreme environments

Ultra-high temperature ceramics: Materials for extreme environments

Influence of zirconium-based alloys on manufacturing and mechanical properties of ultra high temperature ceramic matrix composites

Introduction to H2020 project C³HARME – next generation ceramic composites for combustion harsh environment and space

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Fabrication of ultra high temperature ceramic matrix composites using a reactive melt infiltration process

Cited by 45 publications

References 32 publications

Ultra-high temperature ceramics: Materials for extreme environments

Ultra-high temperature ceramics: Materials for extreme environments

Influence of zirconium-based alloys on manufacturing and mechanical properties of ultra high temperature ceramic matrix composites

Introduction to H2020 project C3HARME – next generation ceramic composites for combustion harsh environment and space

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Product

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Introduction to H2020 project C³HARME – next generation ceramic composites for combustion harsh environment and space