Effect of SiC interlayer on microstructure and flexural strength of C/C-SiC-(Zr,Hf,Ti)C composites prepared by reactive melt infiltration

IF 5.6 2区 材料科学 Q1 MATERIALS SCIENCE, CERAMICS
Junwen Liu , Yalei Wang , Zhiwei Qiao , Xiang Xiong , Zhiyong Ye , Zaidong Liu
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引用次数: 0

Abstract

C/C-SiC-(Zr,Hf,Ti)C composites were prepared by reactive melt infiltration using C/C-SiC preforms and Zr-Hf-Ti mixed powders. Systematic investigation of microstructure evolution was conducted after infiltration at different temperatures, and a mechanistic model elucidating the influence of SiC interlayer on microstructure development was established. Furthermore, the strengthening mechanism of the SiC interlayer on flexural strength was also studied. Results demonstrated that the introduction of the SiC interlayer had two effects including protecting carbon fibers from erosion and creating weak interface. These combined effects significantly improved the load-bearing capacity of non-woven cloth layer. Consequently, the composite with the 0.4 μm SiC interlayer achieved an optimal flexural strength of 148.9 ± 5.7 MPa, representing a 33.9 % enhancement compared to its SiC-free composites.
SiC中间层对反应熔浸法制备C/C-SiC-(Zr,Hf,Ti)C复合材料显微组织和抗弯强度的影响
采用C/C- sic预制件和Zr-Hf-Ti混合粉末,采用反应熔浸法制备了C/C- sic -(Zr,Hf,Ti)C复合材料。系统研究了不同温度浸渗后的微观组织演变,建立了SiC夹层对微观组织发展影响的机理模型。此外,还研究了碳化硅夹层对材料抗弯强度的增强机理。结果表明,SiC夹层的引入具有保护碳纤维免受侵蚀和形成弱界面的双重作用。这些综合作用显著提高了无纺布层的承载能力。结果表明,添加了0.4 μm SiC的复合材料的抗折强度达到了148.9±5.7 MPa,比未添加SiC的复合材料提高了33.9%。
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来源期刊
Ceramics International
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.
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