Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites
SiC<sub>p</sub>/Cu composites were successfully fabricated by vacuum hot-pressing method. Molybdenum coating was deposited on the surface of silicon carbide by sol-gel method. The effects of the interfacial design on thermo-physical properties of SiC<sub>p</sub>/Cu composites...
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| Format: | Article |
| Language: | zho |
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Journal of Materials Engineering
2016-08-01
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| Series: | Cailiao gongcheng |
| Subjects: | |
| Online Access: | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.002 |
| _version_ | 1797967012945723392 |
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| author | LIU Meng BAI Shu-xin LI Shun ZHAO Xun XIONG De-gan |
| author_facet | LIU Meng BAI Shu-xin LI Shun ZHAO Xun XIONG De-gan |
| author_sort | LIU Meng |
| collection | DOAJ |
| description | SiC<sub>p</sub>/Cu composites were successfully fabricated by vacuum hot-pressing method. Molybdenum coating was deposited on the surface of silicon carbide by sol-gel method. The effects of the interfacial design on thermo-physical properties of SiC<sub>p</sub>/Cu composites were studied. The results indicate that:continuous and uniform MoO<sub>3</sub> coating can be deposited on the surface of silicon carbide by peroxomolybdic acid sol-gel system, and the best processing parameters are as follows:SiC:MoO<sub>3</sub>=5:1(mass ratio), H<sub>2</sub>O<sub>2</sub>:C<sub>2</sub>H<sub>5</sub>OH=1:1(volume ratio), and surface pretreatment with acetone and hydrofluoric acid is good to the deposition and growth of MoO<sub>3</sub> coating. After hydrogen reduction at 540℃ for 90min the MoO<sub>3</sub> is changed into MoO<sub>2</sub>, and then hydrogen reduction at 940℃ for 90min the MoO<sub>2</sub> is changed into Mo absolutely, and the Mo coating is continuous and uniform. SiC<sub>p</sub>/Cu composites prepared by vacuum hot-pressing method show a compact and uniform microstructure, and the thermal conductivity of the composites is increased obviously after the Mo coating interfacial modification, which can reach 214.16W·m<sup>-1</sup>·K<sup>-1</sup> when the volume of silicon carbide is about 50%. |
| first_indexed | 2024-04-11T02:24:26Z |
| format | Article |
| id | doaj.art-1afa9c05fb6a4aa4a15bbec2337fa294 |
| institution | Directory Open Access Journal |
| issn | 1001-4381 1001-4381 |
| language | zho |
| last_indexed | 2024-04-11T02:24:26Z |
| publishDate | 2016-08-01 |
| publisher | Journal of Materials Engineering |
| record_format | Article |
| series | Cailiao gongcheng |
| spelling | doaj.art-1afa9c05fb6a4aa4a15bbec2337fa2942023-01-02T22:54:31ZzhoJournal of Materials EngineeringCailiao gongcheng1001-43811001-43812016-08-01448111610.11868/j.issn.1001-4381.2016.08.00220160802Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu CompositesLIU Meng0BAI Shu-xin1LI Shun2ZHAO Xun3XIONG De-gan4Department of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaDepartment of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaDepartment of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaDepartment of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaDepartment of Materials Science and Engineering, National University of Defense Technology, Changsha 410073, ChinaSiC<sub>p</sub>/Cu composites were successfully fabricated by vacuum hot-pressing method. Molybdenum coating was deposited on the surface of silicon carbide by sol-gel method. The effects of the interfacial design on thermo-physical properties of SiC<sub>p</sub>/Cu composites were studied. The results indicate that:continuous and uniform MoO<sub>3</sub> coating can be deposited on the surface of silicon carbide by peroxomolybdic acid sol-gel system, and the best processing parameters are as follows:SiC:MoO<sub>3</sub>=5:1(mass ratio), H<sub>2</sub>O<sub>2</sub>:C<sub>2</sub>H<sub>5</sub>OH=1:1(volume ratio), and surface pretreatment with acetone and hydrofluoric acid is good to the deposition and growth of MoO<sub>3</sub> coating. After hydrogen reduction at 540℃ for 90min the MoO<sub>3</sub> is changed into MoO<sub>2</sub>, and then hydrogen reduction at 940℃ for 90min the MoO<sub>2</sub> is changed into Mo absolutely, and the Mo coating is continuous and uniform. SiC<sub>p</sub>/Cu composites prepared by vacuum hot-pressing method show a compact and uniform microstructure, and the thermal conductivity of the composites is increased obviously after the Mo coating interfacial modification, which can reach 214.16W·m<sup>-1</sup>·K<sup>-1</sup> when the volume of silicon carbide is about 50%.http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.002sol-gelsurface modificationMo coatingSiC<sub>p</sub>/Cuhot-pressing sinteringthermal conductivity |
| spellingShingle | LIU Meng BAI Shu-xin LI Shun ZHAO Xun XIONG De-gan Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites Cailiao gongcheng sol-gel surface modification Mo coating SiC<sub>p</sub>/Cu hot-pressing sintering thermal conductivity |
| title | Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites |
| title_full | Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites |
| title_fullStr | Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites |
| title_full_unstemmed | Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites |
| title_short | Effect of Interfacial Modifying on Thermo-physical Properties of SiC<sub>p</sub>/Cu Composites |
| title_sort | effect of interfacial modifying on thermo physical properties of sic sub p sub cu composites |
| topic | sol-gel surface modification Mo coating SiC<sub>p</sub>/Cu hot-pressing sintering thermal conductivity |
| url | http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2016.08.002 |
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