Influence of SiC fiber on thermal cycling lifetime of SiC fibers /YSZ thermal barrier coatings by atmospheric plasma spraying

Fang, Yongchao; Cui, Xiufang; Guo, Jingjie; Lu, Bingwen; Wang, Fuyuan; Liu, Ming; Wen, Xin

doi:10.1016/j.ceramint.2018.07.040

Cited by 28 publications

(7 citation statements)

References 32 publications

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“…The high-resolution TEM image shows clear lattice stripes corresponding to the LZO (711) crystal plane. The SAED pattern shown in Figure 6b indicates that the single crystal pattern along the crystal belt axis [1][2][3][4][5][6][7][8][9][10][11][12] corresponds well to the (5-1-3), (333), and (220) crystal planes of LZO, which confirms that S2-1200 successfully synthesized LZO using the molten salt method under appropriate conditions.…”

Section: Synthesis Of Lzo With Different Raw Materialssupporting

confidence: 54%

“…As a result, the YSZ coating underwent phase transformation and sintering after long-term use above 1200 °C and eventually failed. 10,11 For perovskite structure coatings, the thermal cycle life is poor, and they easily decompose during spraying, resulting in unstable composition segregation. 12 In recent years, more attention has been given to the pyrochlore structure (A 2 B 2 O 7 ) due to its low thermal conductivity, stable phase structure, good sintering resistance, and low oxygen diffusion rate.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Chen

Wang

et al. 2023

Inorg. Chem.

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In this study, a process based on the molten salt method was proposed to prepare La2Zr2O7 for improving the kinetic conditions of synthesis. Considering that the particle size of raw materials is an important factor that may have an effect on the kinetic process of synthesis, ZrO2 and La2O3 with different particle sizes are used as raw materials, and the synthesis experiment is carried out at 900–1300 °C through the combination of raw materials with different particle sizes. The results show that the particle size of ZrO2 plays an important role in the synthesis of La2Zr2O7. The “dissolution precipitation” mechanism of the synthesis process in the NaCl–KCl molten salt was confirmed by SEM image observation. Furthermore, the influence of the dissolution rate of each raw material on the synthesis reaction was studied by introducing the Noyes–Whitney equation and testing the specific surface area and solubility of each raw material, and it was confirmed that the particle size of ZrO2 was the limiting condition of the synthesis reaction, and use of ZrO2(Z50) with a nominal particle size of 50 nm could significantly improve the kinetic condition of the reaction, thus reducing the synthesis temperature, which can help realize the energy-saving and -efficient synthesis of pyrochlore La2Zr2O7.

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Section: Synthesis Of Lzo With Different Raw Materialssupporting

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Chen

Wang

et al. 2023

Inorg. Chem.

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“…In addition, the SiC whiskers are pulled out of the matrix in the process of crack expansion if the bonding force of the SiC w /coating matrix interface is lower than the strengths of the whiskers (Figure C). Some energy is consumed during the “whiskers pull‐out” from the coating owing to the friction between the whiskers and coatings . When the crack extends to the SiC w at a certain angle, it cannot easily pass through the SiC w and continue to propagate in the original direction due to the high strength and modulus of SiC w .…”

Section: Resultsmentioning

confidence: 99%

“…Some energy is consumed during the “whiskers pull‐out” from the coating owing to the friction between the whiskers and coatings . When the crack extends to the SiC w at a certain angle, it cannot easily pass through the SiC w and continue to propagate in the original direction due to the high strength and modulus of SiC w . Figure E shows that the crack extends to the SiC w and then deflects to other directions around the SiC w .…”

Section: Resultsmentioning

confidence: 99%

“…36,39 When the crack extends to the SiC w at a certain angle, it cannot easily pass through the SiC w and continue to propagate in the original direction due to the high strength and modulus of SiC w . 21,39 Figure 14E shows that the crack extends to the SiC w and then deflects to other directions around the SiC w . The "crack deflection" leads to the formation of new cracks and thus a large fracture energy should be absorbed to improve the toughness of the coating.…”

Section: Thermal Shock Resistances Of the Coatingsmentioning

confidence: 99%

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Bonding strength and thermal shock resistance of a novel bilayer (c‐AlPO₄‐SiC_w‐mullite)/SiC coated carbon fiber reinforced CMCs

Chen

Pan

et al. 2019

J Am Ceram Soc

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Mullite coating, SiC whiskers toughened mullite coating (SiCw‐mullite), and cristobalite aluminum phosphate (c‐AlPO4) particle modified SiCw‐mullite coating (c‐AlPO4‐SiCw‐mullite) were prepared on SiC coated C/SiC composites using a novel sol‐gel method combined with air spraying. Results show that molten SiO2 formed by the oxidation of SiC whiskers and molten c‐AlPO4 improved the bonding strength between mullite outer coating and SiC–C/SiC composites due to their high‐temperature bonding properties. The bonding strength between mullite, SiCw‐mullite, c‐AlPO4‐SiCw‐mullite outer coatings and SiC–C/SiC composites were 2.41, 4.31, and 7.38 MPa, respectively. After 48 thermal cycles between 1773 K and room temperature, the weight loss of mullite/SiC coating coated C/SiC composites was up to 11.61%, while the weight losses of SiCw‐mullite/SiC and c‐AlPO4‐SiCw‐mullite/SiC coatings coated C/SiC composites were reduced to 7.40% and 5.12%, respectively. The addition of appropriate SiC whiskers can considerably improve the thermal shock resistance of mullite coating owing to their excellent mechanical properties at high temperature. In addition, c‐AlPO4 particles can further improve the thermal shock resistance of SiCw‐mullite coating due to their high‐temperature bonding and sealing properties. No obvious micro‐pores and cracks were observed on the surface of c‐AlPO4‐SiCw‐mullite coating after 48 thermal cycles due to timely healing effect by formation of secondary mullite.

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Oxidation and Thermal Cycle Behavior of Yb2Si2O7-c-AlPO4-SiCw-Mullite Multilayer Coatings

Chen,

Xiao,

2023

Engineering Materials

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Influence of SiC fiber on thermal cycling lifetime of SiC fibers /YSZ thermal barrier coatings by atmospheric plasma spraying

Cited by 28 publications

References 32 publications

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Bonding strength and thermal shock resistance of a novel bilayer (c‐AlPO₄‐SiC_w‐mullite)/SiC coated carbon fiber reinforced CMCs

Oxidation and Thermal Cycle Behavior of Yb2Si2O7-c-AlPO4-SiCw-Mullite Multilayer Coatings

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Influence of SiC fiber on thermal cycling lifetime of SiC fibers /YSZ thermal barrier coatings by atmospheric plasma spraying

Cited by 28 publications

References 32 publications

Effect of Raw Material Particle Size on the Synthesis of La2Zr2O7 by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La2Zr2O7 by the Molten Salt Method

Bonding strength and thermal shock resistance of a novel bilayer (c‐AlPO4‐SiCw‐mullite)/SiC coated carbon fiber reinforced CMCs

Oxidation and Thermal Cycle Behavior of Yb2Si2O7-c-AlPO4-SiCw-Mullite Multilayer Coatings

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Product

Resources

About

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Effect of Raw Material Particle Size on the Synthesis of La₂Zr₂O₇ by the Molten Salt Method

Bonding strength and thermal shock resistance of a novel bilayer (c‐AlPO₄‐SiC_w‐mullite)/SiC coated carbon fiber reinforced CMCs