2.5D Cf/SiC复合材料的磨削断裂及氧化机理

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

Ceramics International Pub Date : 2025-05-01 DOI:10.1016/j.ceramint.2025.01.489

Jiaxuan Wang , Jingwen Li , Haibin Chen , Chunxue Wu , Pengfei Yu , Chongjun Wu , Steven Y. Liang

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引用次数: 0

摘要

2.5D Cf/SiC复合材料以其优异的热机械性能而闻名，但由于其非均质结构，给加工带来了重大挑战。研究了不同磨削参数下2.5D Cf/SiC复合材料的磨削质量及其氧化机理。以磨削力和表面粗糙度作为磨削质量的评价指标。通过单因素磨削试验，考察了进给速度、磨削深度、转速对磨削质量的影响及氧化机理。结果表明：转速的增加会减小磨削力和表面粗糙度，而进给速度和磨削深度的增加会增大磨削力和表面缺陷。利用扫描电子显微镜（SEM）分析了断裂和材料去除机制，包括纤维断裂、拔出和分层。这些缺陷的存在增加了表面粗糙度，影响了材料的表面质量。利用能谱分析（EDS）测定了材料的氧含量，并提出了碳氧比的概念来测量材料的氧化程度。

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Grinding induced fracture and oxidation mechanism for 2.5D Cf/SiC composite materials

The 2.5D C_f/SiC composite materials, known for their exceptional thermo-mechanical properties, pose significant machining challenges due to their heterogeneous structure. This paper investigates the grinding quality and oxidation mechanism for 2.5D C_f/SiC composite materials under various grinding parameters. The grinding force and the surface roughness were measured as the evaluation indexes of grinding quality. A single-factor grinding test was conducted to examine the effects of feed speed, grinding depth, and rotational speed on grinding quality and oxidation mechanism. The results show that increased rotational speed reduces grinding force and surface roughness, while higher feed speed and grinding depth increases grinding force and surface defects. The fracture and material removal mechanisms, including fiber fracture, pull-out, and delamination, were analyzed using Scanning Electron Microscope (SEM). The presence of these defects increases the surface roughness and affects the surface quality of the material. The oxygen content of materials was measured by Energy Dispersive Spectroscopy (EDS) analysis, and the concept of carbon oxygen ratio was proposed to measure the oxidation degree of materials.

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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.