Mechanical and thermal physical properties, and thermal shock behavior of (ZrB2+ SiC) reinforced Zr3[Al(Si)]4C6 composite prepared by in situ hot-pressing

Yu, Lei; Feng, Yongbao; Yang, Jian; Qiu, Tai; Pan, Limei

doi:10.1016/j.jallcom.2014.08.247

Cited by 15 publications

(8 citation statements)

References 42 publications

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“…Ten specimens with dimensions of 3 mm×4 mm×36 mm and ten specimens with dimensions of 2 mm×4 mm×22 mm were used for strength and toughness tests, respectively. The strength and toughness were tested in the universal testing machine (SUNS UTM2203, Shenzhen, China), and the test method and process were the same with that in our reported work [13]. The bending strength was measured using a three-point bending method with a span of 30 mm and a cross head speed of 0.5 mm/min.…”

Section: Mechanical Property Testmentioning

confidence: 99%

“…Due to the thermo-elastic mismatch between ZrB 2 and Zr 2 [Al(Si)] 4 C 5 , residual stress arose at the phase interfaces [12]. The coefficients of thermal expansion of ZrB 2 and Zr 2 [Al(Si)] 4 C 5 are 6.8×10 -6 and 8.1×10 -6 , respectively [13,28]. So, according to Hsueh's formula, the radial matrix stress was tensile [12,13].…”

Section: Mechanical Properties and Microstructurementioning

confidence: 99%

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Design and preparation of an ultra-high temperature ceramic by in-situ introduction of Zr2[Al(Si)]4C5 into ZrB2-SiC: Investigation on the mechanical properties and oxidation behavior

Liu

et al. 2021

J Adv Ceram

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Novel ZrB2-matrix composites were designed and prepared by in-situ introducing SiC and Zr2[Al(Si)]4C5 simultaneously for the first time. The obtained composites were dense and showed good mechanical properties, especially the strength and toughness, 706 MPa and 7.33 MPa·m1/2, respectively, coupled with high hardness of 21.3 GPa, and stiffness of 452 GPa. SiC and Zr2[Al(Si)]4C5 constituted a reinforcing system with synergistic effects including grain refinement, grain pull-out as well as crack branching, bridging, and deflection. Besides, the oxidation results of the composites showed that the oxidation kinetics followed the parabolic law at 1600 °C, and the oxidation rate constants increased with the increase of Zr2[Al(Si)]4C5 content. The formation and evolution model of the oxidation structure was also investigated, and the oxide scale of the composite exhibited a three-layer structure.

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Section: Mechanical Property Testmentioning

confidence: 99%

Section: Mechanical Properties and Microstructurementioning

confidence: 99%

Design and preparation of an ultra-high temperature ceramic by in-situ introduction of Zr2[Al(Si)]4C5 into ZrB2-SiC: Investigation on the mechanical properties and oxidation behavior

Liu

et al. 2021

J Adv Ceram

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“…ree-point bend testing has been used to measure the strength of composite ceramics [11][12][13][14]; while the Hertz indentation test has been used to measure the stress-strain properties of alumina and zirconia ceramics [15]. For the Hertz indentation test, three conditions are required: firstly, the deformation of the contact surface should be low; secondly, the contact surface must be oval; and, thirdly, the contact objects should behave as elastic half-spaces.…”

Section: Introductionmentioning

confidence: 99%

Properties of Ceramic Substrate Materials for High‐Temperature Pressure Sensors for Operation above 1000°C

Guo

Zhang

et al. 2018

Advances in Materials Science and Engineering

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In order to identify suitable substrate materials for sue in high-temperature pressure sensors that can operate above 1000°C, the high-temperature properties of four high-performance ceramics (99% pure Al 2 O 3 (99Al 2 O 3 ), 97% pure Al 2 O 3 (97Al 2 O 3 ), sapphire, and ZrO 2 ) were investigated. ree-point bend testing was used to measure the flexural strengths and flexural moduli of these ceramics, and transient laser emission was used to measure their thermal conductivities. e samples were prepared by hotpress sintering: plates with the dimensions of 3.5 × 5 × 50 mm 3 for the bend testing and rods of φ12.5 × 1.5 mm 3 for the thermal conductivity measurements. Curves showing the dependence of flexural strength, flexural modulus, and thermal conductivity on temperature were obtained. e results show that the flexural strength and thermal conductivity of sapphire are much greater than those of the other ceramics tested. us, we conclude that sapphire is the most appropriate of these materials for use in hightemperature pressure sensors for operation at up to 1000°C.

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“…Ultra high temperature ceramics (UHTCs) are promising candidates for use in thermal protection systems (TPS) and propulsion systems in hypersonic aerospace vehicles, owing to their ultra high melting temperatures, outstanding oxidation resistance, good chemical inertness, and high dimensional stability [1][2][3][4]. However, their intrinsic characteristics, such as low fracture toughness (premature failure due to brittle fracture) [5][6][7], poor thermal shock resistance [8][9][10], are still obstacles for them to be used widely, especially for applications with high heat transfer and/or rapid environmental temperature changes.…”

Section: Introductionmentioning

confidence: 99%

Rapid heating thermal shock study of ultra high temperature ceramics using an in situ testing method

Dong

2017

J Adv Ceram

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Abstract:In this paper, the rapid cooling thermal shock behaviors of ZrB 2 -SiC ceramics were measured using traditional water quenching method, and the rapid heating thermal shock behaviors of ZrB 2 -SiC ceramics were investigated using a novel in situ testing method. The measured critical thermal shock temperature difference for rapid cooling thermal shock was 373.6 ℃; however, the critical thermal shock temperature difference for rapid heating thermal shock of ZrB 2 -SiC ceramics was measured to be as high as 1497.2 ℃. The thermal stress distribution states after rapid cooling thermal shock and rapid heating thermal shock testing were analyzed using finite element analysis (FEA) method. The FEA results showed that there is a tensile stress existed on the surface for rapid cooling thermal shock, whereas there is a compressive stress existed on the surface for rapid heating thermal shock. The difference of thermal stress distribution resulted in the difference of the critical temperature difference for rapid cooling thermal shock and rapid heating thermal shock.

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Mechanical and thermal physical properties, and thermal shock behavior of (ZrB2+ SiC) reinforced Zr3[Al(Si)]4C6 composite prepared by in situ hot-pressing

Cited by 15 publications

References 42 publications

Design and preparation of an ultra-high temperature ceramic by in-situ introduction of Zr2[Al(Si)]4C5 into ZrB2-SiC: Investigation on the mechanical properties and oxidation behavior

Design and preparation of an ultra-high temperature ceramic by in-situ introduction of Zr2[Al(Si)]4C5 into ZrB2-SiC: Investigation on the mechanical properties and oxidation behavior

Properties of Ceramic Substrate Materials for High‐Temperature Pressure Sensors for Operation above 1000°C

Rapid heating thermal shock study of ultra high temperature ceramics using an in situ testing method

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