复合材料课件4【荐】.pdf

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复合材料课件4【荐】.pdf

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复合材料课件4【荐】.pdf

Chapter 4 Ceramic Composite (陶瓷基复合材料) Outline Introduction Property of ceramic matrix composite The category of ceramic matrix composite Fabrication process for ceramic matrix composite Machining and Joining Conclusion 4.1 Introduction What is ceramic composite? Ceramic matrix composites (CMCs) combine reinforcing ceramic phases with a ceramic matrix to create materials with new and superior properties. The reason to choose CMCs hardness ↑ strength ↑ Purpose Optimizing other properties: toughness ↑ electrical and thermal conductivity, high-temperature stability ………………. Example The configuration of CMCs discontinuous reinforcements CMCs continuous reinforcements Example 1 Discontinuous reinforcements Example 2 Continuous reinforcements Manufacturing processes of CMCs Process 1: Powder consolidation process Process 2: Chemical vapor deposition Ceramic interface and the SiC matrix are both formed by deposition from a gas precursor at elevated temperature Applications of CMCs CMCs ………………… 4.2 Property of CMCs General characteristic of ceramics Modulus √ Hardness √ Ceramics Stability √ Melting point √