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Ti3Si C2是一种新型金属陶瓷材料,集金属和陶瓷特性于一身,如室温下优良的导电率、导热率、高弹性模量、高屈服强度和出色的抗氧化能力等。本文重点介绍了Ti3Si C2材料的性能、制备方法及其广阔的应用前景。 相似文献
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Ti3SiC2及其复合材料的研究现状及发展趋势 总被引:4,自引:0,他引:4
介绍了Ti3SiC2陶瓷材料的微观结构与性能,认为该材料良好的综合性能有望解决陶瓷材料的脆性问题.并概述了Ti3SiC2及Ti3SiC2基复合材料各种制备方法的特点和研究状况、应用前景和发展趋势. 相似文献
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YIN Hongfeng FAN Qiang REN Yun ZHANG Junzhan 《中国耐火材料》2008,17(1):10-13
Ti3SiC2/SiC composites were fabricated by reactive hot pressing method. Effects of hot pressing temperature, the content and particle size of SiC on phase composition, densification, mechanical properties and behavior of stress-strain of the composites were investigated. The results showed that : ( 1 ) Hot-pressing temperature influenced the phase composition of Ti3SiC2/SiC composites. The flexural strength and fracture toughness of composites increased with hot pressing temperature. (2) It became more difficult for the composites to densify when the content of SiC in composites increased. It need be sintered at higher temperature to get denser composite. The flexural strength and fracture toughness of composites increased when the content of SiC added in composites increased. However, when the content of SiC reached 50 wt%, the flexural strength and fracture toughness of composites decreased due to high content of pore in composites. (3) When the content of SiC was same, Ti3SiC2/SiC composites were denser while the particle size of SiC added in composites is 12. 8 μm compared with the composites that the particle size of SiC added is 3 μm. The flexural strength and fracture toughness of composites increased with the increase of particle size of SiC added in composites. (4) Ti3SiC2/SiC composites were non-brittle fracture at room temperature. 相似文献
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Pavel Istomin Elena Istomina Aleksandr Nadutkin Vladislav Grass Mikhail Kaplan 《International Journal of Applied Ceramic Technology》2019,16(2):746-752
Dense Ti3SiC2-SiC, Ti4SiC3-SiC, and Ti3SiC2-Ti4SiC3-SiC ceramic composites were fabricated through carbosilicothermic reduction of TiO2 under vacuum, followed by hot pressing of the as-synthesized products under 25 MPa at 1600°C. In the reduction step, SiC either alone or in combination with elemental Si was used as a reductant. A one-third excess of SiC was added in the reaction mixtures in order to ensure the presence of approximately 30 vol.% SiC in the products of synthesis. During the hot pressing step, the samples that contained Ti3SiC2 showed better densification compared to those containing Ti4SiC3. The obtained composites exhibited the strength properties typical of coarse-grained MAX-phase ceramics. The flexural strength values of 424 and 321 MPa were achieved in Ti3SiC2-SiC, and Ti3SiC2-Ti4SiC3-SiC composites, respectively. The fracture toughness values were 5.7 MPa·m1/2. 相似文献
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为了进一步了解Ti3SiC2/nSiC复合材料优良的综合性能,特别是其高温力学性能,本文以热等静压原位合成技术制备的Ti3SiC2/4SiC复相陶瓷为试验材料,对其高温拉伸和高温弯曲行为进行研究。结果表明:Ti3SiC2/4SiC复相陶瓷的高温抗拉强度比室温抗拉强度高;Ti3SiC2/4SiC复相陶瓷的高温抗弯强度在900℃出现一极大值,1000℃后具有好的高温塑性。 相似文献