Gradient HfB2-SiC multilayer oxidation resistant coating for C/C composites

Wang, Peipei; Mu, Tong; Wang, Hanhui; Li, Hejun; Jia, Yujun; Li, Bo; Zhang, Yulei

doi:10.1016/j.ceramint.2018.08.104

Cited by 43 publications

(13 citation statements)

References 34 publications

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“…At present, SiC coatings' preparation for protecting carbonaceous substrates have multiple methods, including pack cementation [21][22][23], laser-induced chemical decomposition (LICD) [24], and chemical vapor deposition (CVD) [25]. Several researchers have used pack cementation of SiC to reduce the thermal expansion variations between carbon-based substrates and coating [26].…”

Section: Introductionmentioning

confidence: 99%

WITHDRAWN: SiC/nano α-Al2O3 Double-Layer Coating on Graphite Component via Pack Cementation and Electrophoretic Deposition

2020

Preprint

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Section: Introductionmentioning

confidence: 99%

WITHDRAWN: SiC/nano α-Al2O3 Double-Layer Coating on Graphite Component via Pack Cementation and Electrophoretic Deposition

2020

Preprint

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“…As shown in Table 2, variation of the distance between adjacent atomic layers in Ta with twelve atomic layers is sufficient to show the interior feature of the bulk SiC [11,13] .…”

Section: Slab Thickness and Surface Energymentioning

confidence: 96%

“…Overall, the variation of the interlayer distance in the interior of the Ta-and B-terminated TaB2(0001) slabs can be ignored as the number of atomic layers greater than eleven, so the 11-layered Ta-and B-terminated TaB2(0001) slabs are selected. For SiC(111) slab, numerous studies have demonstrated that SiC(111) slab with twelve atomic layers is sufficient to show the interior feature of the bulk SiC [11,13] .…”

Section: Slab Thickness and Surface Energymentioning

confidence: 99%

“…Wang et al [11] examined the anti-oxidation performance of the C/C composite coated with gradient HfB2 modified SiC coating at 1773, 1873 and 1973 K. The results suggested that the HfB2-SiC coating with good crystallization exhibits excellent oxidation resistance at 1773 K, with a mass loss of 0.17% after 800 hours, and the hafnium compound could consume the crack formation energy and block the crack propagation during the oxidation process. Ren et al [12] investigated the anti-oxidation ability of ZrB2-SiC coating and indicated that the excellent oxidation protective ability of the ZrB2-SiC gradient coating can be maintained for more than 207 hours at 1773 K.…”

Section: Introductionmentioning

confidence: 99%

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First-principles calculation of atomic structure, stability and electronic structure of TaB2/SiC interface

Chen

Xiong

Zhou

et al. 2020

Preprint

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The atomic structure, interface stability and electronic interaction of TaB2(0001)/SiC(111) interfaces were investigated by first principles study. The study found that the termination atom and stacking position are the key factors affecting the bonding strength and stability of the interface. On the basis of considering work of adhesion (Wad) and interfacial energy (γint), the Ta-TaB2/C-SiC centre-site stacked (Ta CS-C) and B-TaB2/C-SiC center-site stacked (B-CS-C) configurations were recognized as the most stable structures from ten different interface models. Electronic interaction of the two most stable interfaces were revealed by analyzing the charge density distribution, charge density difference and partial density of states (PDOS), and it was found that ionic and metallic bond coexisted in Ta CS-C interface, while covalent bond played a dominant role in B-CS-C interface.

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“…In this work, novel ZrC-SiC inner layers with different microstructure and phases were prepared by the pack cementation (PC) method at different temperatures. The nonuniform thickness and rough surface of the inner coating can enhance the bonding strength of the CVD-SiC layer [20,21]. Simultaneously, due to the uniform deposited SiC coating via chemical vapor deposition (CVD) [22], these surface features were reserved for the preparation of the ZrC-SiC outer layer by plasma spraying (PS), forming an interlocking structure of SiC/ZrC-SiC tri-layer coating.…”

Section: Introductionmentioning

confidence: 99%

Surface Optimization of ZrC–SiC Inner Layer to Enhance Ablation Property of SiC/ZrC–SiC Multi-Layer Coating for C/C Composites

Fang

Weng

et al. 2021

Coatings

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A ZrC–SiC inner layer was fabricated on carbon/carbon composites by pack cementation at different temperatures, aiming to prepare a transition layer for subsequent deposition of SiC and ZrC–SiC layer by chemical vapor deposition and plasma spray. Results show that the structure and phase composition of the inner layer significantly affected the interface bonding strength and thermal shock resistance of the multilayer, which played a vital role in resisting ablation. The jagged and porous surface of the inner layer led to forming a root-like pinning interface, generating a sawtooth combination between the layers. Moreover, the inner layer with high SiC content decreased the coefficient of thermal expansion mismatch between the inner and outer layers. Therefore, the enhanced ablation resistance of the optimum coating was attributed to the improved interface bonding strength and thermal shock resistance caused by the ZrC–SiC inner layer with rough and porous surface structure.

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Gradient HfB2-SiC multilayer oxidation resistant coating for C/C composites

Cited by 43 publications

References 34 publications

WITHDRAWN: SiC/nano α-Al2O3 Double-Layer Coating on Graphite Component via Pack Cementation and Electrophoretic Deposition

WITHDRAWN: SiC/nano α-Al2O3 Double-Layer Coating on Graphite Component via Pack Cementation and Electrophoretic Deposition

First-principles calculation of atomic structure, stability and electronic structure of TaB2/SiC interface

Surface Optimization of ZrC–SiC Inner Layer to Enhance Ablation Property of SiC/ZrC–SiC Multi-Layer Coating for C/C Composites

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