Thermal shock effects on the impact resistance, tolerance and flexural strength of alumina based oxide/oxide ceramic matrix composites

Ortega, Brianna; Kitt, Brian; Singh, Abhendra K.; Kahle, Kaitlyn; Lee, Keeley; Villaflor, Daniel; Benedict, Zach

doi:10.1016/j.ceramint.2021.10.133

Cited by 13 publications

(4 citation statements)

References 14 publications

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“…These cracks may lead to degradation of the transfer load of the matrix, thereby reducing the flexural modulus of the composite. [31] In term of flexural strength, some degradation of the fiber was caused by thermal aging. Figure 9a shows the shear stress-displacement curves of the composite before and after thermal aging.…”

Section: Mechanical Properties Of the Compositementioning

confidence: 99%

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Sun,

Tian,

Liu

et al. 2024

Adv Eng Mater

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Herein, a three‐dimensional (3D) oxide fiber reinforced oxide matrix (oxide/oxide) composite is fabricated via slurry infiltration and sintering process. Subsequently, the effects of thermal aging on the microstructure and mechanical properties of the 3D oxide/oxide composite at 900 and 1100 °C are investigated. Experimental results indicate that the thermal aging affects the matrix microstructures and fiber/matrix interface. The elastic modulus of the matrix and interfacial shear strength increases with aging temperature and time. Aging treatment at 900 °C for 100 and 300 h results in a moderate decrease in the flexural strength and fracture toughness but improves the delamination resistance, whereas that at 1100 °C for 100 h lead to a significant decrease in the flexural strength and fracture toughness. The changes in mechanical properties might be attributed to matrix densification and enhanced interfacial bonding.

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Section: Mechanical Properties Of the Compositementioning

confidence: 99%

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Sun,

Tian,

Liu

et al. 2024

Adv Eng Mater

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“…In the tests of impact resistance, researchers focus on the relationship between the damage effect of a protective material and the movement parameters of high-speed flying objects (e.g. hailstone, meteorite, explosion, bullet, debris, etc) [1,2]. From a scientific point of view, if obtaining relevant movement parameters, such as flight velocity, flight angle, and impact position, they will provide more valuable references * Author to whom any correspondence should be addressed.…”

Section: Introductionmentioning

confidence: 99%

Accuracy calibration of the multi-light screen measurement system using array optical signal

Chen,

Deng,

Yang

et al. 2024

Meas. Sci. Technol.

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The multi-light screen measurement systems must be calibrated before being come into use, and a calibration method using live-fire practice is generally adopted. However, this method has many shortcomings, such as high cost, high risk and poor efficiency. To effectively improve the measurement accuracy of a multi-light screen measurement system, we propose a calibration method based on array optical signal in the paper. According to the measurement principle of the system, the proposed calibration theory is systematically described. The aim is to map the given measurement results in the form of vector into the specified time sequence. Furthermore, we develop a calibration platform whose core components are an arbitrary waveform generator and a tunable laser, and thus it can generate a set of six optical signals with an exact sequential relationship. After receiving the optical signals, some measurement results with errors are obtained by the system. Many calibration operations are performed to obtain the systematic errors, which are the statistical average of the deviation between the given measurement results and those with errors. Finally, we use the proposed calibration method combined with the error tensor and the traditional one to carry out comparison experiments. The results show that the proposed calibration method is superior to the traditional method in terms of comprehensive performance. In addition, the proposed calibration method relative to the traditional ones has some advantages, such as high efficiency, safety and low cost.

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“…21 Ceramic materials inevitably undergo thermal shock in operational conditions, which is a phenomenon extensively explored by numerous scholars. Ortega et al 22 conducted an experimental study to evaluate the impact of thermal shock on the damage resistance, damage tolerance, and flexural strength of Nextel 610/alumina silicate ceramic matrix composites. The composite laminates underwent heating, retention, and subsequent water quenching at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Mechanical properties and thermal shock resistance of TiB₂‒B₄C composite ceramic tool materials at microscopic scale

Wang,

Ding,

Zhang

et al. 2024

Int J Applied Ceramic Tech

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A finite model incorporating microstructure was developed to investigate the thermal shock resistance of TiB2‒B4C composite ceramic cutting tool materials. Numerical simulations were conducted to analyze changes in the transient temperature field and thermal stress field during the thermal shock process. TiB2‒B4C composite ceramic tool materials were fabricated using discharge plasma sintering technology. With different B4C contents, different sintering temperatures and holding times as study variables, optimization of the sintering process parameters and ceramic material components was achieved through testing the mechanical and microscopic morphology of the ceramics. Thermal shock water quenching experiments were performed, and the strength‐decay method was employed to assess the thermal shock resistance of TiB2‒B4C ceramics. The findings indicate that the optimal sintering conditions are temperature of 1700°C and holding time of 5 min. The TiB2‒B4C ceramic material containing 20 vol% B4C exhibits superior comprehensive mechanical properties and thermal shock resistance, and its relative density, fracture toughness, hardness, and flexural strength were 99.3%, 6.8 MPa m1/2, 22.8 GPa, and 598 MPa, respectively. The critical thermal shock temperature difference falls within the range of 400°C‒500°C.

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Thermal shock effects on the impact resistance, tolerance and flexural strength of alumina based oxide/oxide ceramic matrix composites

Cited by 13 publications

References 14 publications

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Accuracy calibration of the multi-light screen measurement system using array optical signal

Mechanical properties and thermal shock resistance of TiB₂‒B₄C composite ceramic tool materials at microscopic scale

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Thermal shock effects on the impact resistance, tolerance and flexural strength of alumina based oxide/oxide ceramic matrix composites

Cited by 13 publications

References 14 publications

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Microstructure and Mechanical Properties of a Three‐Dimensional Oxide/Oxide Composite after Long‐Term Thermal Exposure

Accuracy calibration of the multi-light screen measurement system using array optical signal

Mechanical properties and thermal shock resistance of TiB2‒B4C composite ceramic tool materials at microscopic scale

Contact Info

Product

Resources

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Mechanical properties and thermal shock resistance of TiB₂‒B₄C composite ceramic tool materials at microscopic scale