Rapid fabrication of HfB2-MoSi2-SiC ultra-high-temperature ceramic coatings on SiC-C/C composites for enhanced laser ablation resistance

IF 6 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2026-10-01 Epub Date: 2026-07-27 DOI:10.1016/j.ceramint.2026.07.472

Zhuoting Lei, Xiaohong Shi, Fan Jiao, Quanliang Wu, Yuxin Zhang, Hejun Li

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引用次数: 0

Abstract

To improve the fabrication efficiency and ablation resistance of coatings for carbon/carbon (C/C) composites, HfB₂-MoSi₂-SiC (HMS) coatings were prepared on SiC-coated C/C substrates by laser-directed energy deposition (L-DED). For comparison, a reference HfB₂-MoSi₂-SiC coating was also fabricated by liquid silicon infiltration (LSI). The interfacial characteristics, flexural behavior, and laser ablation resistance of the coatings were systematically investigated. The results show that the L-DED coatings (LD-HMS) exhibited a smoother and denser microstructure, stronger interfacial bonding, and better mechanical retention than the LSI coatings (LS-HMS). The preparation efficiency of LD-HMS is three times higher than that of LS-HMS. The flexural strength of LD-HMS reaches 152.23 ± 7.54 MPa, representing a 32.02% increase compared with that of LS-HMS. Under laser irradiation at 39.79 MW/m² for 30 s, the mass and linear ablation rates of LD-HMS are only 0.047 mg/s and 0.100 μm/s, respectively. The superior ablation resistance of LD-HMS is mainly attributed to its denser initial microstructure, heat dissipation and vapor shielding from Si-rich phases, sealing by the SiO₂-rich glass layer, and crack suppression by HfO₂/HfSiO₄ particles. These results demonstrate that L-DED is an effective route for the rapid fabrication of ultra-high-temperature protective ceramic coatings on C/C composites.

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在SiC-C/C复合材料上快速制备HfB2-MoSi2-SiC超高温陶瓷涂层以增强激光烧蚀性能

为了提高碳/碳（C/C）复合材料涂层的制备效率和抗烧蚀性，采用激光定向能沉积（L-DED）技术在sic涂层的C/C衬底上制备了HfB2-MoSi2-SiC （HMS）涂层。为了进行比较，采用液态硅渗透（LSI）法制备了一种参考的HfB2-MoSi2-SiC涂层。系统地研究了涂层的界面特性、弯曲性能和抗激光烧蚀性能。结果表明：L-DED涂层（LD-HMS）比LSI涂层（LS-HMS）具有更光滑、致密的微观结构、更强的界面结合能力和更好的机械保持性。LD-HMS的制备效率是LS-HMS的3倍。LD-HMS的抗弯强度达到152.23 ± 7.54 MPa，比LS-HMS提高32.02%。在39.79 MW/m2激光照射30 s下，LD-HMS的质量和线性烧蚀率分别为0.047 mg/s和0.100 μm/s。LD-HMS具有优异的抗烧蚀性能，主要归功于其致密的初始微观结构、对富硅相的散热和蒸汽屏蔽、富sio2玻璃层的密封以及HfO2/HfSiO4颗粒对裂纹的抑制作用。这些结果表明，L-DED是在C/C复合材料上快速制备超高温保护陶瓷涂层的有效途径。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.