Preparation and hydrothermal corrosion behavior of Cf/SiCN and Cf/SiHfBCN ceramic matrix composites

Yuan, Jiawei; Luan, Xingang; Riedel, Ralf; Ionescu, Emanuel

doi:10.1016/j.jeurceramsoc.2014.12.009

Cited by 37 publications

(20 citation statements)

References 37 publications

(37 reference statements)

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“…The same reaction applied to a commercial polyvinylsilazane, followed by hydroboration as shown in Fig. 13b, produced HfSiBCN ceramics that remained amorphous to 1300 °C before segregating during crystallisation [191], and which produced composites with carbon fibres with significantly better resistance to hydrothermal corrosion compared with silicon carbonitride [192]. Reaction of CpZrCl2 with a polyborosilazane polymer led to amorphous ZrSiBCN ceramics up to 1600 °C, where phase segregation during crystallisation was again observed [193].…”

Section: Incorporation Of Other Elementsmentioning

confidence: 92%

Synthesis and processing of silicon nitride and related materials using preceramic polymer and non-oxide sol-gel approaches

Hector

2016

Coordination Chemistry Reviews

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The use of preceramic polymer and sol-gel processing methods in the production of silicon nitride and a number of related materials is reviewed. Amorphous ceramics in this system, that may contain additional carbon, boron and other elements, have a number of promising and/or useful high temperature properties. These include good mechanical properties and oxidation resistance at temperatures that can exceed 1500 °C with some materials, but also useful charge storage capability, catalytic activity and semiconducting or optical properties after doping.

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Section: Incorporation Of Other Elementsmentioning

confidence: 92%

Synthesis and processing of silicon nitride and related materials using preceramic polymer and non-oxide sol-gel approaches

Hector

2016

Coordination Chemistry Reviews

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“…If we compare only dense Si 3 N 4based samples, then in the work of Galuskova et al [15] the ratio S/V was 0.7, while in this work due to the smaller size of tested samples the ratio was lower, 0.17. Yuan et al [31] have studied the influence of S/V ratio on the hydrothermal corrosion of SiCN-based ceramic composites and reported that with decreasing S/V ratio the weight loss increased. Therefore, higher weight loss is expected for samples SA and SB at 290°C with S/V ratio 0.17 compared to the corrosion rate of samples with S/V ratio 0.7, as their corrosion rate was similar to these samples already at 250°C.…”

Section: Properties After Hydrothermal Corrosionmentioning

confidence: 99%

HYDROTHERMAL CORROSION RESISTANCE OF SILICON NITRIDE WITH O'-Si Al ON GRAIN BOUNDARY PHASE

Vetrecín¹

2018

Ceramics - Silikaty

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Dense Si 3 N 4-based composites with O'-SiAlON bonding phase were prepared by hot pressing of the mixture of Si 3 N 4 matrix and polysiloxane (samples SA) and polysilazane (samples SB) based sintering aids. In both samples α-Si 3 N 4 and β-Si 3 N 4 were identified as major phases and O'-SiAlON with a chemical formula Si 1.84 Al 0.16 O 1.16 N 1.84 as a minor phase. The hydrothermal corrosion tests were performed in subcritical conditions at 250°C for 100 hours. The weight loss was rather low, 0.96 wt. % and 1.32 wt. % for samples SA and SB, respectively. The corrosion rate of samples SA and SB was 206 mg•m-2 •h-1 and 233 mg•m-2 •h-1. The higher corrosion rate of sample SB prepared with polysilazane-based sintering aid is most probably due to the hydrothermal dissolution of Si 3 N 4 grains producing ammonia, as the pH value of eluate of this sample was higher, 8.5 compared to pH = 8.0 determined for sample SA. In sample SA a continuous SiO 2-based passivation layer was formed, while in sample SB the passivation layer was discontinuous and the corrosion medium could easily attack the Si 3 N 4 grains. As the corrosion solution was more basic in sample SB, the SiO 2 passivation layer did not form so effectively, or dissolved faster than in sample SA. The higher corrosion resistance of sample SA was partly improved also by using Y 2 O 3 sintering additive, which formed a rather stable Y 2 SiO 5 phase.

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“…Polysilazanes can be modified also with non-oxidic organometallics. Recently, several studies concerning the chemical modification of PHPS as well as vinyl- and hydrido-substituted polysilazanes with Ti [ 72 , 73 , 76 , 77 ], Zr and Hf [ 78 , 79 ] amido complexes were reported. The obtained metal-containing single-source precursors were shown to be highly compliant and to provide access to different ultrahigh-temperature stable ceramic nanocomposites (such as MN/Si 3 N 4 , MN/SiCN, MCN/SiCN, etc.…”

Section: Preceramic Polymersmentioning

confidence: 99%

“…Recently, oxycarbide- and carbonitride-based PDC-NCs were studied with respect to their hydrothermal corrosion behavior [ 78 , 181 ].…”

Section: Properties Of Ceramic Nanocompositesmentioning

confidence: 99%

“…Ceramic matrix composites consisting of carbon fibers embedded within a SiCN and SiHfBCN matrix were also investigated concerning their behavior in hydrothermal conditions [ 78 ]. The preparation of the CMCs was performed via polymer infiltration and pyrolysis process (PIP) of 2D carbon fabrics with a polysilazane and an Hf- and B-modified polysilazane, respectively.…”

Section: Properties Of Ceramic Nanocompositesmentioning

confidence: 99%

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Ceramic Nanocomposites from Tailor-Made Preceramic Polymers

et al. 2015

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The present Review addresses current developments related to polymer-derived ceramic nanocomposites (PDC-NCs). Different classes of preceramic polymers are briefly introduced and their conversion into ceramic materials with adjustable phase compositions and microstructures is presented. Emphasis is set on discussing the intimate relationship between the chemistry and structural architecture of the precursor and the structural features and properties of the resulting ceramic nanocomposites. Various structural and functional properties of silicon-containing ceramic nanocomposites as well as different preparative strategies to achieve nano-scaled PDC-NC-based ordered structures are highlighted, based on selected ceramic nanocomposite systems. Furthermore, prospective applications of the PDC-NCs such as high-temperature stable materials for thermal protection systems, membranes for hot gas separation purposes, materials for heterogeneous catalysis, nano-confinement materials for hydrogen storage applications as well as anode materials for secondary ion batteries are introduced and discussed in detail.

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Preparation and hydrothermal corrosion behavior of Cf/SiCN and Cf/SiHfBCN ceramic matrix composites

Cited by 37 publications

References 37 publications

Synthesis and processing of silicon nitride and related materials using preceramic polymer and non-oxide sol-gel approaches

Synthesis and processing of silicon nitride and related materials using preceramic polymer and non-oxide sol-gel approaches

HYDROTHERMAL CORROSION RESISTANCE OF SILICON NITRIDE WITH O'-Si Al ON GRAIN BOUNDARY PHASE

Ceramic Nanocomposites from Tailor-Made Preceramic Polymers

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