Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering
The Ti/SiC gradient material with Mg2Si additive was designed and fabricated by reaction sintering. The structure, microstructure and properties were investigated systematically. The result indicated that the Ti/SiC gradient material contained six layers with Ti-rich and Si-rich regions. The relativ...
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| Format: | Article |
| Language: | English |
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Elsevier
2023-07-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423011444 |
| _version_ | 1797745236399620096 |
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| author | Jingkun Li Binguo Fu Tianshun Dong Guolu Li Yanling Zhang Yongyue Liu Jiageng Liu |
| author_facet | Jingkun Li Binguo Fu Tianshun Dong Guolu Li Yanling Zhang Yongyue Liu Jiageng Liu |
| author_sort | Jingkun Li |
| collection | DOAJ |
| description | The Ti/SiC gradient material with Mg2Si additive was designed and fabricated by reaction sintering. The structure, microstructure and properties were investigated systematically. The result indicated that the Ti/SiC gradient material contained six layers with Ti-rich and Si-rich regions. The relative density decreased from 98.32% to 88.73%, and it increased to 97.28%. Besides, the harness increased from 532.97 HV to 571.32 HV and reduced to 228.14 HV with the increase of Ti content. The fracture toughness of the SiC layer was 6.74 MPa m1/2, and it decreased to 4.91–5.39 MPa m1/2 at the layers containing Ti. The shrinkage rates increased during heating, and it slowed down at the holding stage. The densification primarily occurred at the heating and holding stages. The densification mechanism is the pore displacement controlled by lattice diffusion. Ti5Si3 synthesized by the reaction between Ti and SiC shows the incoherent interface to the Ti grain. |
| first_indexed | 2024-03-12T15:20:30Z |
| format | Article |
| id | doaj.art-133fa5e7c03c467181c3f311bb0a7dcc |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-03-12T15:20:30Z |
| publishDate | 2023-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-133fa5e7c03c467181c3f311bb0a7dcc2023-08-11T05:32:49ZengElsevierJournal of Materials Research and Technology2238-78542023-07-0125657666Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sinteringJingkun Li0Binguo Fu1Tianshun Dong2Guolu Li3Yanling Zhang4Yongyue Liu5Jiageng Liu6School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, PR ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, PR ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, PR ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300401, PR China; Corresponding author.AVIC Manufacturing Technology Institute, Beijing, 100024, PR ChinaTechnology Center, Ningbo Heli Technology Shareholding Co., Ltd, Ningbo, 315700, PR ChinaGuangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, 541004, PR ChinaThe Ti/SiC gradient material with Mg2Si additive was designed and fabricated by reaction sintering. The structure, microstructure and properties were investigated systematically. The result indicated that the Ti/SiC gradient material contained six layers with Ti-rich and Si-rich regions. The relative density decreased from 98.32% to 88.73%, and it increased to 97.28%. Besides, the harness increased from 532.97 HV to 571.32 HV and reduced to 228.14 HV with the increase of Ti content. The fracture toughness of the SiC layer was 6.74 MPa m1/2, and it decreased to 4.91–5.39 MPa m1/2 at the layers containing Ti. The shrinkage rates increased during heating, and it slowed down at the holding stage. The densification primarily occurred at the heating and holding stages. The densification mechanism is the pore displacement controlled by lattice diffusion. Ti5Si3 synthesized by the reaction between Ti and SiC shows the incoherent interface to the Ti grain.http://www.sciencedirect.com/science/article/pii/S2238785423011444Ti/SiC gradient materialSpark plasma sintering (SPS)MicrostructureMechanical propertiesReaction mechanism |
| spellingShingle | Jingkun Li Binguo Fu Tianshun Dong Guolu Li Yanling Zhang Yongyue Liu Jiageng Liu Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering Journal of Materials Research and Technology Ti/SiC gradient material Spark plasma sintering (SPS) Microstructure Mechanical properties Reaction mechanism |
| title | Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering |
| title_full | Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering |
| title_fullStr | Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering |
| title_full_unstemmed | Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering |
| title_short | Structural characterization and reaction mechanism of the Ti/SiC gradient material with Mg2Si additive fabricated by reaction sintering |
| title_sort | structural characterization and reaction mechanism of the ti sic gradient material with mg2si additive fabricated by reaction sintering |
| topic | Ti/SiC gradient material Spark plasma sintering (SPS) Microstructure Mechanical properties Reaction mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423011444 |
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