Constructing self-healing ZrSi2-MoSi2 coating for C/C composites with enhanced oxidation protective ability

Wang, Lu; Fu, Qiangang; Fang, Zhao; Zhao, Zhigang

doi:10.1016/j.surfcoat.2018.05.002

Cited by 60 publications

(11 citation statements)

References 36 publications

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“…Based on the similar priciples, ZrB2-SiCW composite had a good self crack-healing ability ( 800 °C -1200 °C), and its recovey reached the optimum effect at the tempature of 1000 °C [4]. The preferential oxidation of ZrO2/ZrSiO4 particles was formed to reduce the formation of cracks based on reaction (2), low viscosity SiO2 phase contributed to healing the cracks, and protective SiO2 layer pinned by ZrO2/ZrSiO4 particles to restrain re-cracking during cooling [5]. The three self-healing mechanisms improved the recover ability of the composite.…”

Section: Introductionmentioning

confidence: 92%

“…Many articles emphasized on the effect of the oxide came from the additives on the self healing [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16]. B2O3 [1][2], ZrO2 [3][4][5][6], SiO2 [7][8][9][10][11][12] and TiO2 [13][14][15][16] were introduced into ceramic composites and have been studied as the promising self-healing systems for high temperature applications. The initial cracks are generally introduced into ceramic composites at room temperature, and the samples with cracks were put into oxygen-containing environments to observe the changing state of the cracks.…”

Section: Introductionmentioning

confidence: 99%

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Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites

Sun

Liu

Zhang

et al. 2020

Ceramics International

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The lifetime of ceramic tool is decreased because of the extension of cracks, and it will be prolonged if the cracks can be self healed. The healing ability of laminated Al2O3 cutting tool composites (Al2O3-(WC-Co)-MgO / Al2O3-TiC-MgO) were assessed. For determining which laminated structure and the healing condition was the best for the composite, the flexural strength and recovery rates were measured and different healing condition were used. XRD, EDS and SEM technology were carried out to identify their compositions and microstructures after the healing. The number of cracks filled with TiO2, crack size and the oxide content effect were utilized to explain why the flexural strength and recovery rates of laminated Al2O3 cutting tool composite after the healing were different. A single particle model was utilized to identify the relation between the threshold time, grain size and the self healing temperature of the composites.

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Section: Introductionmentioning

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites

Sun

Liu

Zhang

et al. 2020

Ceramics International

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“…Wang et al [19] sprayed ZrSi 2 -MoSi 2 on the SiC-coated C/C ceramic composite by using an ultrasonic plasma spraying technology, which showed good self-healing performance at 1450 • C. However, there is little research on the healing agent at low temperatures less than 800 • C. Bei et al [20] examined crack healing using an Al 2 O 3 composite loaded with the Ti 2 Al 0 . 5 Sn 0 .…”

Section: Introductionmentioning

confidence: 99%

Self-Healing of SiC-Al2O3-B4C Ceramic Composites at Low Temperatures

Wang

Wei

et al. 2022

Materials

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Self-healing ceramics have been researched at high temperatures, but few have been considered at lower temperatures. In this study, SiC-Al2O3-B4C ceramic composite was compacted by spark plasma sintering (SPS). A Vickers indentation was introduced, and the cracks were healed between 600 °C and 800 °C in air. Cracks could be healed completely in air above 700 °C. The ceramic composite had the best healing performance at 700 °C for 30 min, recovering flexural strength of up to 94.2% of the original. Good crack-healing ability would make this composite highly useful as it could heal defects and flaws autonomously in practical applications. The healing mechanism was also proposed to be the result of the oxidation of B4C.

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“…Carbon materials are ideal high temperature materials in aerospace and other industrial elds because of their excellent material properties such as high melting point, low density, with high strength and high modulus, high heat stability, low thermal expansion coe cient, stable friction coe cient, high thermal conductivity, heat resistant corrosion resistance and other excellent performances. Even at high temperature (2200℃) under inert atmosphere, it still remain good mechanical properties comparable to room temperature [1][2][3] , thus in the aerospace, nuclear, chemical, and other elds it has a broad application prospect [4][5][6] . However, in the air atmosphere, the untreated carbon materials oxidized at 450℃, and the rate increased rapidly with the increase of temperature [7][8] .…”

Section: Introductionmentioning

confidence: 99%

Laser Cladding and Anti-Laser Ablative Behaviour of Si-SiC-MoSi2-ZrB2 Composite Coatings on Carbon Surface

Wang

Yang

Wang

et al. 2020

Preprint

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A Si-SiC-MoSi2-ZrB2 antioxidation composite coating was fabricated by laser cladding technology on the graphite matrix surface, and laser ablation was carried out on the coating surface to evaluate the anti-ablation capability of the coating surface. The phase transformation, microstructure reconstruction and the change of binding strength between the coating and the matrix during the laser cladding and ablation were investigated. The coating of Si-SiC-MoSi2 series modified by 40wt% ZrB2 had the lowest weight loss rate and the highest coating bonding strength. The oxide mostly existed in amorphous form after laser cladding, and the semi-melting particles in laser path lap zone on the coating surface disappeared. The oxide layer peeled off and Mo-Zr-Si-O composite glass phase was formed on the coating surface. The internal microstructure of the coating co-existed with non-oriented fine needle-like dendrites and irregular particles, which improved the coating strength. After laser ablation, the coating modified by 40wt% ZrB2 had lower weight loss rate and higher scratch bonding strength compared with the unmodified coating of Si-SiC-MoSi2 series, which indicated that the ablation resistance of the coating was improved by the formation of continuous oxide layer on the surface.

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Constructing self-healing ZrSi2-MoSi2 coating for C/C composites with enhanced oxidation protective ability

Cited by 60 publications

References 36 publications

Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites

Self healing ability and strength recovery of different laminated Al2O3 cutting tool composites

Self-Healing of SiC-Al2O3-B4C Ceramic Composites at Low Temperatures

Laser Cladding and Anti-Laser Ablative Behaviour of Si-SiC-MoSi2-ZrB2 Composite Coatings on Carbon Surface

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