Effect of interphase thickness on damping behavior of 2D C/SiC composites

Qing Zhang, Laifei Cheng, Wei Wang, Xi Wei, Litong Zhang, Yongdong Xu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

11 Scopus citations

Abstract

Internal friction of 2D C/SiC composites fabricated by chemical vapor infiltration (CVI) method was measured by dynamical mechanical analysis (DMA) at different frequencies from room temperature (RT) to 400°C in air atmosphere. Internal friction of 2D C/SiC composites increased gradually with increasing temperature and then decreased after damping peak appeared in the temperature range of 250°C to 300°C. Damping capacity and peak value decreased gradually with increasing frequency, accompanied with a shift of damping peak towards lower temperatures. Moreover, the effect of interphase thickness on damping behavior of 2D C/SiC composites was investigated. The results showed that damping peak of the composites increased gradually and the temperature of the peak shifted to the lower temperature with increasing PyC interphase thickness, when the interphase thickness is in the range of 90-296nm. The influence of interphase thickness on interfacial bonding strength, sliding resistance and the microstructure of SiC matrix was discussed, which was considered to be responsible for the results.

Original languageEnglish
Title of host publicationProgress in Light Metals, Aerospace Materials and Superconductors
PublisherTrans Tech Publications Ltd
Pages1531-1534
Number of pages4
EditionPART 3
ISBN (Print)0878494324, 9780878494323
DOIs
StatePublished - 2007
Event2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006 - Beijing, China
Duration: 25 Jun 200630 Jun 2006

Publication series

NameMaterials Science Forum
NumberPART 3
Volume546-549
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006
Country/TerritoryChina
CityBeijing
Period25/06/0630/06/06

Keywords

  • C/SiC composites
  • Damping behavior
  • Interphase thickness

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