An investigation into a multilayered BN/Si3N4/BN interfacial coating

Coons, Timothy P.; Reutenauer, Justin W.; Flandermeyer, B. K.; Kmetz, Michael A.; Prevost, E.; Suib, Steven L.

doi:10.1007/s10853-013-7416-4

Cited by 14 publications

(2 citation statements)

References 15 publications

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“…17 Another contrastive research about the mechanical properties and oxidation resistance of composites with BN/Si 3 N 4 duplex and BN/Si 3 N 4 /BN triplex interfacial coatings were developed, and the diffusion of boron during the thermal exposure was discussed. 18 However, the interaction between the layers and the failure mechanism of minicomposites is still poorly understood and needs a comprehensive investigation.…”

Section: Introductionmentioning

confidence: 99%

Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature

Dai

et al. 2022

Journal of Composite Materials

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To overcome the brittle fracture of ceramic matrix composites, the interfacial coatings between continuous fibers and ceramic matrix, especially boron nitride (BN) and silicon carbide (SiC) coatings were often introduced into the composites to improve the interface properties. This work focused on the use of chemical vapor infiltration (CVI) and precursor infiltration and pyrolysis (PIP) to fabricated SiC fiber-reinforced SiC (SiCf/SiC) minicomposites with interfacial coatings. Single BN, double-layered BN/SiC, and multi-layered (BN/SiC)2 interfacial coatings were deposited on SiC fibers from BCl3-NH3-H2 and MTS (Methyltrichlorosilane)-H2 systems in a low pressure hot-wall CVI reactor. Room-temperature tensile testing was used to evaluate the influence of different interfacial coatings on the tensile properties and failure mechanism of SiCf/SiC minicomposites. The minicomposites with (BN/SiC)2 coatings performed the highest fracture strength of 630.9 MPa. The mechanical behaviour of the composites was characterized by universal testing machine with acoustic emission (AE) detector, scanning electron microscope (SEM), and energy dispersive X-ray spectrometer (EDS). The existence of (BN/SiC)2 coatings provoked the interface debonding in minicomposite both at the BN/fiber interface and the interface between BN and SiC layers, prolonging the crack propagation paths and noticeably improving the fracture properties of minicomposite.

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Section: Introductionmentioning

confidence: 99%

Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature

Dai

et al. 2022

Journal of Composite Materials

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“…The low thermal expansion mismatch between Si 3 N 4 and C or BN is of particular importance [17] , which can effectively alleviate the thermal stress within (C/Si 3 N 4 ) n or (BN/Si 3 N 4 ) n multilayer, thus preventing the formation of thermal cracks. At present, the effect of (BN/Si 3 N 4 ) n interphase on the oxidation resistance of SiC/SiC composites was reported [18][19][20] . A significant improvement in the oxidation resistance was found.…”

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confidence: 99%

Influence of Deposition Temperature and Heat Treatment on Silicon Nitride Coat ing Deposited by LPCVD

Chun-Jing¹,

Dong²,

Jin³

et al. 2019

Journal of Inorganic Materials

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Silicon nitride coatings on carbon fiber cloth were prepared by Low Pressure Chemical Vapor Deposition (LPCVD) from gas mixtures of SiCl 4-NH 3-H 2 at temperatures ranging from 750 ℃to 1250 ℃. The effects of deposition temperature on the growth kinetics, morphologies, chemical composition and bonding state of the coatings were investigated. The results showed that deposition rate increased monotonously with temperature up to 1050 ℃, then it reversely decreased. In the whole temperature range, the coating surface morphology became gradually coarse with cauliflower-like grains as the deposition temperature increased. The optimal deposition temperature for infiltration was in the range between 750 and 950 ℃. Chemical composition analysis demonstrated that the nitrogen content of the coating firstly decreased and then increased with temperature increase, while the silicon content continuously increased and the oxygen content gradually decreased in the whole temperature range. Heat treatment at 1300 ℃ and above crystallized the coating. Concurrently, a significant change in its surface morphology was observed. All heat-treated coatings were exclusively composed of -Si 3 N 4 , without the presence of any -Si 3 N 4 .

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Degradation of boron nitride interfacial coatings fabricated by chemical vapor infiltration on SiC fibers under ambient air/room temperature conditions

Dai

Wang

et al. 2019

Ceramics International

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An investigation into a multilayered BN/Si3N4/BN interfacial coating

Cited by 14 publications

References 15 publications

Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature

Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature

Influence of Deposition Temperature and Heat Treatment on Silicon Nitride Coat ing Deposited by LPCVD

Degradation of boron nitride interfacial coatings fabricated by chemical vapor infiltration on SiC fibers under ambient air/room temperature conditions

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An investigation into a multilayered BN/Si3N4/BN interfacial coating

Cited by 14 publications

References 15 publications

Tensile properties and failure mechanism of the SiCf/SiC minicomposite with multi-layered (BN/SiC)n interfacial coatings at room temperature

Tensile properties and failure mechanism of the SiCf/SiC minicomposite with multi-layered (BN/SiC)n interfacial coatings at room temperature

Influence of Deposition Temperature and Heat Treatment on Silicon Nitride Coat ing Deposited by LPCVD

Degradation of boron nitride interfacial coatings fabricated by chemical vapor infiltration on SiC fibers under ambient air/room temperature conditions

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Product

Resources

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Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature

Tensile properties and failure mechanism of the SiC_f/SiC minicomposite with multi-layered (BN/SiC)_n interfacial coatings at room temperature