Effect of surface oxidation on thermal shock resistance of ZrB 2 –SiC–ZrC ceramic at temperature difference from 800 to 1900 °C

Wang, Zhi; Zhou, Peng; Wu, Zhanjun

doi:10.1016/j.corsci.2015.05.035

Cited by 24 publications

(4 citation statements)

References 39 publications

(53 reference statements)

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“…Due to the inherent intrinsic brittleness of ceramics, their thermal shock resistance is relatively poor, thus limiting applications in many aspects. 3,4 For example, the critical thermal shock temperature difference of single-phase alumina (Al 2 O 3 ) ceramics is only 200 • C, which makes its thermal shock resistance poor. 5 Introducing a suitable amount of second phases in the ceramic matrix is an effective approach to improve the thermal shock resistance of ceramics by refining their microstructure and increasing the resistance of a fracture to propagation.…”

Section: Introductionmentioning

confidence: 99%

“…Rapid and large temperature fluctuations can cause thermal stresses in materials, leading to the propagation of microcracks, reducing the mechanical properties, and eventually damaging the materials. Due to the inherent intrinsic brittleness of ceramics, their thermal shock resistance is relatively poor, thus limiting applications in many aspects 3,4 . For example, the critical thermal shock temperature difference of single‐phase alumina (Al 2 O 3 ) ceramics is only 200°C, which makes its thermal shock resistance poor 5 .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Aluminum nitride‐based ceramics with excellent thermal shock resistances

Wang,

Zou,

Cai

et al. 2024

J Am Ceram Soc.

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Ceramics were susceptible to thermal shock failure. In this work, aluminum nitride‐based ceramics with excellent thermal shock resistance were developed. Thermal shock resistance was evaluated in the temperature range of 1200–1600°C by thermal cycling of 10, 20, 30, and 50 times. The phase composition, microstructure, and mechanical properties of the ceramics before and after the thermal shock were investigated. After 50 thermal cycles, the retention rates of the flexural strength and fracture toughness were 81.7% and 113.1%, respectively. The excellent thermal shock resistance was attributed to the combined effects of amorphous grain boundaries that passivate the propagation of microcracks and in‐situ precipitation of nanocrystalline particles during thermal cycles, both of which provide useful guidelines for developing ceramics with better thermal shock resistances.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Aluminum nitride‐based ceramics with excellent thermal shock resistances

Wang,

Zou,

Cai

et al. 2024

J Am Ceram Soc.

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“…Ablation resistance is the most critical issue for high temperature ceramics used in the aerospace industries. In ablation environments, mechanical loads are inflicted on the materials in addition to the oxidation and showed great variation compared with the sole oxidation process [32,33]. Thus, evaluation of microstructural evolution and its influence on ablation properties represents an important yet complicated task in materials subjected to ablation.…”

Section: Introductionmentioning

confidence: 99%

Ablation behavior and mechanism of boron nitride - magnesium aluminum silicate ceramic composites in an oxyacetylene combustion flame

Cai

Yang

Yuan

et al. 2018

Ceramics International

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“…So, the retained strength is enhanced after the introduction of MAS. [22][23][24] The decrease in retained strength of the composites at DT=800°C is mainly attributed to the high volatility of B 2 O 3 (have not react with MAS to form glassy layer effectively) at this temperature which leads to the cracks and pores on the surface.…”

mentioning

confidence: 99%

Effect of magnesium aluminum silicate glass on the thermal shock resistance of BN matrix composite ceramics

et al. 2017

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The effects of magnesium aluminum silicate (MAS) glass on the thermal shock resistance and the oxidation behavior of h‐BN matrix composites were systematically investigated at temperature differences from 600°C up to 1400°C. The retained strength rate of the composites rose with the increasing content of MAS showing a maximum value at the 60 wt% MAS. Compared with the original strength, the retained strength of the specimen after thermal shock increased to 77% (ΔT=1000°C). The strengthening effect of MAS and the surface microstructural evolution of composites are responsible for the improved thermal shock resistance. Surface oxidation of the composites during the thermal shock process plays a positive role in enhancing the retained strength by self‐healing cracks and the appearance of the compressive stress. The oxide layer also acted as a thermal barrier to decelerate the actual thermal stress. Furthermore, this dense layer also improved the oxidation resistance of h‐BN matrix composites by prevent diffusion of oxygen. These results indicated that short‐term surface oxidation during thermal shock process is favorable to the enhancement of the thermal shock resistance of BN‐MAS composite ceramics.

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Effect of surface oxidation on thermal shock resistance of ZrB 2 –SiC–ZrC ceramic at temperature difference from 800 to 1900 °C

Cited by 24 publications

References 39 publications

Aluminum nitride‐based ceramics with excellent thermal shock resistances

Aluminum nitride‐based ceramics with excellent thermal shock resistances

Ablation behavior and mechanism of boron nitride - magnesium aluminum silicate ceramic composites in an oxyacetylene combustion flame

Effect of magnesium aluminum silicate glass on the thermal shock resistance of BN matrix composite ceramics

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