Thermal ablation resistance of melt-infiltrated titanium diboride-(copper, nickel) composites

Hong, Changqing; Han, Jiecai; Zhang, Xinghong; Meng, Sheng; Du, Shanyi

doi:10.1016/j.jallcom.2007.06.082

Cited by 15 publications

(5 citation statements)

References 24 publications

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“…At present, the development of new materials is related to the knowledge and studies of composite materials, where new advantageous properties can be achieved due to the contributions of particular components. In many papers, special interest is focused on metal-ceramic composites with porous reinforcing networks, which are different from the traditional composites usually composed of discrete fibres, whiskers or particles dispersed within a matrix phase [1].…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, copper is limited by its melting point (1083 • C) and higher thermal expansion (16 × 10 −6 K −1 ). From [1] traditional copper infiltrated tungsten composite (Cu/W) with special spatial inter-connected structure is known. Cu/W composite has high strength, high thermal shock resistance and high ablation resistance at elevated temperatures.…”

Section: Introductionmentioning

confidence: 99%

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Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Opálek¹,

Beronská²,

Nagy³

et al. 2020

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Composite materials based on Cu matrix have a wide range of applications because of their extraordinary features such as high thermal conductivity and high mechanical strength. The preparation of Cu-ZrB2 and CuCr1Zr-ZrB2 composites via gas pressure infiltration technology is described in this work. In contrast to most ceramic materials, ZrB2 is electrically and thermally conductive. All tested samples, i.e. prepared from the ZrB2 porous preform with a porosity of 40 % were infiltrated with molten Cu or CuCr1Zr alloy. Microstructure and homogeneity after infiltration were examined by SEM-EDS microscopy. The interface between the Cu matrix and ZrB2 ceramics was explored by TEM microscopy. As-infiltrated composites were thermally cycled up to 800 • C with heating and cooling rates of 3 • C min −1 in an argon atmosphere.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Opálek¹,

Beronská²,

Nagy³

et al. 2020

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“…Moreover, it can maintain a more efficient cooling effect than passive ablation technology in harsher heat flow environments that put forward a higher standard for porous structures as the heat transfer medium and coolant carrier (Figure 1). Currently, most heat transfer mediums in transpiration cooling adopt metal structures like porous stainless steel, 6–8 high‐entropy alloy, 9 and porous copper material 10–12 . These metal structures possess well mechanical strength and thermal conductivity, but they cannot be applied in high‐temperature environment 13,14 .…”

Section: Introductionmentioning

confidence: 99%

“…Currently, most heat transfer mediums in transpiration cooling adopt metal structures like porous stainless steel, [6][7][8] high-entropy alloy, 9 and porous copper material. [10][11][12] These metal structures possess well mechanical strength and thermal conductivity, but they cannot be applied in high-temperature environment. 13,14 Additionally, some ceramic structures, like porous ceramics [15][16][17] and threedimensional woven ceramic matrix composites, 18,19 are also used for heat transfer medium; it is a fantastic idea to overcome the high temperature resistance and lightweight problem, but there are still some shortcomings, including water oxygen corrosion and chemical reactions, when liquid water is used as a coolant because it has higher cooling efficiency than gas, 20,21 which seriously restricts the temperature limit of these porous ceramic structures.…”

Section: Introductionmentioning

confidence: 99%

Porous ZrO₂–ZrO₂ ceramics with excellent mechanical strength and permeability for transpiration cooling

Zhang,

Li,

Fan

2024

J Am Ceram Soc.

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The great development of transpiration cooling technology challenges the coolant medium seriously. In this paper, porous ZrO2–ZrO2 ceramics have been satisfactorily prepared to meet the requirements of the coolant medium in transpiration cooling. The results illustrate that porous ZrO2–ZrO2 ceramics have excellent compressive strengths; meanwhile, percentages of compressive strength difference (parallel and perpendicular to the mold‐pressing direction) have an upward trend due to the increasing fiber contents. Besides, the failure mode has a huge distinction between parallelity (45° oblique section) and perpendicularity (wedge shape). These ceramics have unimodal pore size distribution (2–10 µm), and their wettability has a substantial improvement reflected by contact angle from 118° to 0°. Permeability behavior across these ceramics has been accurately described using the Darcy–Forchheimer equation, while obtaining viscous and inertial resistance coefficients, respectively. This work can provide an essential reference for coolant medium in transpiration cooling.

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“…Although relatively extensive experimental and computational investigations have been performed to understand the mechanical behavior of various IPC systems, thermal shock resistance of IPCs has been examined only in a few studies. Hong et al [14] estimated thermal shock resistance parameters R and R for TiB 2 /Cu and TiB 2 /Ni IPCs based on their measured thermomechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Thermal Fracture of an Interpenetrating Phase Composite: Effects of Local Thermal Nonequilibrium

Jin

2014

Journal of Thermal Stresses

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When subjected to thermal shocks, an interpenetrating phase composite may undergo significant, long range temperature difference between the constituent phases due to the interconnected microstructural networks, which facilitate faster heat transfer in the phase of higher thermal diffusivity. This temperature differential may alter the macroscopic temperature field thereby inducing additional thermal stresses in the composite. This work presents a local thermal nonequilibrium (LTNE) thermoelasticity theory for interpenetrating phase composites. In the LTNE thermoelasticity theory, the temperatures of the constituent phases are governed by the LTNE heat conduction equations based on the continuum theory of mixtures. A weighted average of temperatures for the constituents is employed in the thermoelastic constitutive equations of the homogenized composite. The model is subsequently applied to an infinite composite strip with an edge crack subjected to a thermal shock. Asymptotic solutions of temperature, thermal stress, and thermal stress intensity factor are obtained using the Laplace transform technique. The numerical results for an interpenetrating Al 2 O 3 /Al composite show that the temperature and thermal stress fields of the LTNE theory deviate from those of the classical theory. More importantly, the thermal stress intensity factor is reduced by considering the LTNE effect, which indicates that interpenetrating networks enhance the thermal fracture resistance of ceramic-metal composites.

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Thermal ablation resistance of melt-infiltrated titanium diboride-(copper, nickel) composites

Cited by 15 publications

References 24 publications

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Porous ZrO₂–ZrO₂ ceramics with excellent mechanical strength and permeability for transpiration cooling

Thermal Fracture of an Interpenetrating Phase Composite: Effects of Local Thermal Nonequilibrium

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Thermal ablation resistance of melt-infiltrated titanium diboride-(copper, nickel) composites

Cited by 15 publications

References 24 publications

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Microstructure and thermal stability of the Cu-ZrB2 and CuCr1Zr-ZrB2 composites prepared by gas pressure infiltration

Porous ZrO2–ZrO2 ceramics with excellent mechanical strength and permeability for transpiration cooling

Thermal Fracture of an Interpenetrating Phase Composite: Effects of Local Thermal Nonequilibrium

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Porous ZrO₂–ZrO₂ ceramics with excellent mechanical strength and permeability for transpiration cooling