Preparation and long-term ablation resistance of reaction-sintered Cf/SiBCN (Zr) composites

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-04-01 DOI:10.1016/j.ceramint.2025.01.097

Hao Sui , Jianshan Zhou , Jinye Niu , Ziheng Cui , Jingjing Gao , Yansong Zhao , Feibiao Liu , Yun Wu , Zhe Peng

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Abstract

The C_f/SiBCN-ZrB₂ composites were prepared using an inorganic synthesis method - hot press reactive sintering. Three distinct composites were fabricated by combining reactive sintering with high-temperature melt infiltration, with the raw material ratios adjusted accordingly. A long-term ablation test lasting 400 s was performed using an oxy-acetylene flame, the surface temperatures of the samples exceeded 2100 °C. The absence of macroscopic cracks in all three samples indicates that the SiBCN composites, prepared via reactive sintering, exhibit excellent high-temperature stability. Among these, the composites with a higher silicon content, demonstrated the lowest ablation loss rate, with linear and mass ablation rates of 0.205 μm/s and 1.11 mg/s, respectively, significantly outperforming the composites with a reduced silicon content. The surface of the ablated samples, the continuous and dense ZrO₂-SiO₂ oxide layer, which serves as the main ablation barrier, effectively isolates the matrix from the oxy-acetylene flame.

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反应烧结Cf/SiBCN （Zr）复合材料的制备及其长期抗烧蚀性能

采用热压反应烧结无机合成方法制备了Cf/SiBCN-ZrB2复合材料。采用反应烧结与高温熔体渗透相结合的方法制备了三种不同的复合材料，并对原料配比进行了相应的调整。采用氧乙炔火焰进行了持续400 s的长期烧蚀试验，样品表面温度超过2100℃。三种样品均未出现宏观裂纹，表明反应烧结制备的SiBCN复合材料具有优异的高温稳定性。其中，高硅含量复合材料的烧蚀速率最低，线性烧蚀速率为0.205 μm/s，质量烧蚀速率为1.11 mg/s，明显优于低硅含量复合材料。烧蚀样品表面连续致密的ZrO2-SiO2氧化层作为主要烧蚀屏障，有效地将基体与氧乙炔火焰隔离。

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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.