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.
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.