In situ fabrication of TiC/Ti3Al/Ti2AlC composite by spark plasma sintering technology
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概要
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A powder mixture of Ti, Al4C3 and graphite was adopted to synthesize a new TiC/Ti3Al/Ti2AlC composite by spark plasma sintering. The reaction route was proposed from XRD analysis. TiC, Ti3Al and Ti2AlC formed from 800°C with TiCx and Ti3Aly acting as the intermediate phases until the reaction process completed at 1200°C. It was found from TEM observation that Ti3Al underwent an intergrowth relationship with TiC grains inside the Ti2AlC matrix due to the in situ reaction sintering. The average hardness, fracture toughness, Young’s modulus and bending strength of the composite were 10.2 ± 0.6 GPa, 6.5 ± 0.2 MPa·m1/2, 436 ± 11 MPa and 227 ± 13 GPa, respectively.
著者
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Jiang Wan
State Key Lab. Of High Performance Ceramics And Superfine Microstructure Shanghai Inst. Of Ceramics
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Jiang Wan
State Key Lab Of High Performance Ceramics And Superfine Microstructures Shanghai Institute Of Ceram
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Wang Lianjun
State Key Lab. For Modification Of Chemical Fibers And Polymer Materials Donghua Univ.
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Shi Lu
State key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute o
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ZHANG Jianfeng
Institute for Materials Research, Tohoku University
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Zhang Jianfeng
Institute For Materials Research Tohoku University
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SHI Lu
State key Laboratory of High Performance Ceramics and Superfine Microstructure, Shanghai Institute of Ceramics, Chinese Academy of Sciences
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