Effect of pyrolytic carbon coating on the microstructure and fracture behavior of the Cf/ZrB2-SiC composite

Zhang, Dongyang; Hu, Ping; Dong, Shun; Qu, Qiang; Zhang, Xinghong

doi:10.1016/j.ceramint.2018.07.210

Cited by 41 publications

(15 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This value approaches the upper limit of 4.6 ± 1.2 kJ/m 2 showed by continuous fibrereinforced UHTCMC characterized by weak fibre/matrix interfaces [27]. The RFCVI specimens, having a WoF between 1.8 and 2.7 kJ/m 2 , showed an energy dissipation to the fracture higher than those reported in literature, generally lower than 2 kJ/m 2 [28]. As with flexural strength, the RMI-1 specimens with a WoF of 0.38 kJ/m 2 confirm their brittle behaviour, while the large data scatter of RMI-2 (WoF = 2.6 ± 1.9 kJ/m 2 ) confirms the not perfectly controlled reaction of the molten alloy with the fibres.…”

Section: Flexural Strengthsupporting

confidence: 53%

Retained strength of UHTCMCs after oxidation at 2278 K

Galizia

Vinci

Zoli

et al. 2021

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

In the frame of Horizon 2020 European C 3 HARME research project, the manufacture of ZrB2-based CMCs was developed through different processes: slurry infiltration and sintering, radio frequency chemical vapour infiltration (RF-CVI) and reactive metal infiltration (RMI). To assess the high temperature stability, room temperature bending strength was measured after oxidizing the samples at 2278 K and compared to the strength of the as-produced materials. Microstructures were analysed before and after the thermal treatment to assess the damage induced by the high temperature oxidation. Short fibre-reinforced composites showed the highest retained strength (>80 %) and an unchanged stress-strain curve.

show abstract

Section: Flexural Strengthsupporting

confidence: 53%

Retained strength of UHTCMCs after oxidation at 2278 K

Galizia

Vinci

Zoli

et al. 2021

Composites Part A: Applied Science and Manufacturing

View full text Add to dashboard Cite

show abstract

“…The continuous carbon fibers added to the SiHfBOC ceramic matrix are arranged orderly in the SiHfBOC ceramic matrix, which can greatly improve the flexural strength of C f /SiC/SiHfBOC composites. During the process of an elastic deformation stage, the continuous carbon fiber absorbs a large amount of energy, and much of its mechanical energy absorbed is transferred to the surface of carbon fiber, which is mismatched with the ceramic matrix and further beginning deboned [37]. In Fig.…”

Section: Characterization Of Mechanical Properties and Analysis Of Strengthening-toughening Of C F /Sic/sihfboc Compositesmentioning

confidence: 99%

Microstructural regulation, oxidation resistance, and mechanical properties of Cf/SiC/SiHfBOC composites prepared by chemical vapor infiltration with precursor infiltration pyrolysis

Lyu

Chen

et al. 2021

J Adv Ceram

Self Cite

View full text Add to dashboard Cite

To further improve the oxidation resistance of polymer derived ceramic (PDC) composites in harsh environments, Cf/SiC/SiHfBOC composites were prepared by chemical vapor infiltration (CVI) and precursor impregnation pyrolysis (PIP) methods. The weight retention change, mechanical properties, and microstructure of Cf/SiC/SiHfBOC before and after oxidation in air were studied in details. Microscopic analyses showed that only the interface between the ceramics and fibers was oxidized to some extent, and hafnium had been enriched on the composite surface after oxidizing at different temperature. The main oxidation products of Cf/SiC/SiHfBOC composites were HfO2 and HfSiO4 after oxidation at 1500 °C for 60 min. Moreover, the weight retention ratio and compressive strength of the Cf/SiC/SiHfBOC composites are 83.97% and 23.88±3.11 MPa, respectively. It indicates that the Cf/SiC/SiHfBOC composites should be promising to be used for a short time in the oxidation environment at 1500 °C.

show abstract

“…98 A technique coined "slurry brushing" has been employed by Zhang et al to avoid high sintering temperatures that are detrimental to fiber fidelity and subsequent composite toughness. 99,100 In this method, a nano-ZrB 2 -SiC F I G U R E 8 Schematic representation of chopped carbon fiber degradation during SPS depending on heating profile. Temperatures exceeding 1900°C (right side of diagram) resulted in extreme fiber degradation and reduction of properties, as set by the eutectic melt of the matrix 94 slurry was brushed onto subdivided PyC-coated C f to create fiber-reinforced ceramic plates which were stacked together along the fiber direction or in a 0-90 layup.…”

Section: Sinteringmentioning

confidence: 99%

“…These composites were fully densified after SPS at 1600°C and 40 MPa for 10 minutes in vacuum. 100 In a follow-on study, a 0-90 layup was explored with densification via a graphite resistance furnace at 1450°C and 30 MPa pressure for 2 h. 99 Both studies resulted in increased toughening via fiber bridging and pullout, due in part to interface coating and lack of fiber degradation at the lower sintering temperature. Moreover, these composites showed excellent thermal shock resistance.…”

Section: Sinteringmentioning

confidence: 99%

“…Moreover, these composites showed excellent thermal shock resistance. 99,100 A slurry vacuum infiltration and sintering process, inspired by architectural engineering, has been recently employed by Hu et al to densify 3D C f preforms with ZrC-SiC and ZrB 2 -SiC matrices. [101][102][103] In one instance, C f preforms were precoated with PyC coating and then syringe-impregnated with a ZrC-SiC powder-solvent slurry.…”

Section: Sinteringmentioning

confidence: 99%

See 1 more Smart Citation

Processing of fiber‐reinforced ultra‐high temperature ceramic composites: A review

Rueschhoff

Carney

Apostolov

et al. 2019

Int J Ceramic Engine & Sci

View full text Add to dashboard Cite

Ultra-high temperature ceramics (UHTCs) have emerged as promising materials for high-temperature aerospace applications due to their high melting temperature and superior ablation performance. Even still, they have yet to reach their full potential due to the catastrophic brittle failure that typically accompanies the intrinsic low fracture toughness of ceramic materials. Therefore, the emerging field of UHTC ceramic matrix composites (UHTCMCs) offers the toughness benefits of a composite with the high temperature stability of UHTCs. Here, we outline work in the last decade on the processing of UHTCs with a reinforcing fiber phase for enhanced fracture toughness. Included are fibers of both carbon and silicon carbide composition in both continuous and chopped fiber lengths. Particular emphasis is given to emerging research from the last few years to highlight novel developments. K E Y W O R D Sceramic matrix composites, ceramic processing, ultra-high temperature ceramics How to cite this article: Rueschhoff LM, Carney CM, Apostolov ZD, Cinibulk MK. Processing of fiber-reinforced ultra-high temperature ceramic composites: A review.

show abstract

Effect of pyrolytic carbon coating on the microstructure and fracture behavior of the Cf/ZrB2-SiC composite

Cited by 41 publications

References 37 publications

Retained strength of UHTCMCs after oxidation at 2278 K

Retained strength of UHTCMCs after oxidation at 2278 K

Microstructural regulation, oxidation resistance, and mechanical properties of Cf/SiC/SiHfBOC composites prepared by chemical vapor infiltration with precursor infiltration pyrolysis

Processing of fiber‐reinforced ultra‐high temperature ceramic composites: A review

Contact Info

Product

Resources

About