Decreasing Resistivity of Silicon Carbide Ceramics by Incorporation of Graphene
Cai, NN; Guo, DD; Wu, GP; Xie, FM; Tan, SH; Jiang, N; Li, H
Source PublicationMATERIALS
AbstractSilicon carbide (SiC) ceramic is an ideal material for mechanical seal because of its super hardness, high strength, low friction coefficient, good thermal conductivity, and resistance to friction and wear. However, due to relatively high resistivity of SiC ceramic, the triboelectric charge caused by rubbing of mechanical seal end-faces could not be released. It is terrible that the accumulation of triboelectric charge could cause electrochemical corrosion, which would accelerate wear. To decrease the resistivity of SiC ceramic is a desire for improving the performance of mechanical seal. In this research, decreasing resistivity of pressureless sintered SiC ceramic was investigated by conductive pathways through semiconductive grains in a body by incorporation of graphene, which has an extremely low resistivity. With the increasing of graphene from 0 to 2 wt.%, the volume resistivity of SiC ceramics sintered with graphene decreased logarithmically from >10(6)to around 200 omega center dot cm, and the bulk density decreased gradually, from 3.132 to 3.039 g/cm(3). In order to meet the requirements of mechanical seal, SiC ceramic sintered with 1 wt.% of graphene, for which the volume resistivity is of 397 omega center dot cm, the bulk density is of 3.076 g/cm(3), and the flexural strength is of 364 MPa, was optimized when all properties were taken into consideration. It is possible to fabricate low-resistivity SiC ceramic as a useful friction pair material for mechanical seal in a special condition, without excessive loss of their excellent mechanical properties by the introduction of partially connected graphene as conductive pathway into semiconducting ceramic.
WOS Research AreaMaterials Science
Citation statistics
Document Type期刊论文
Recommended Citation
GB/T 7714
Cai, NN,Guo, DD,Wu, GP,et al. Decreasing Resistivity of Silicon Carbide Ceramics by Incorporation of Graphene[J]. MATERIALS,2020(16).
APA Cai, NN.,Guo, DD.,Wu, GP.,Xie, FM.,Tan, SH.,...&Li, H.(2020).Decreasing Resistivity of Silicon Carbide Ceramics by Incorporation of Graphene.MATERIALS(16).
MLA Cai, NN,et al."Decreasing Resistivity of Silicon Carbide Ceramics by Incorporation of Graphene".MATERIALS .16(2020).
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Cai, NN]'s Articles
[Guo, DD]'s Articles
[Wu, GP]'s Articles
Baidu academic
Similar articles in Baidu academic
[Cai, NN]'s Articles
[Guo, DD]'s Articles
[Wu, GP]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Cai, NN]'s Articles
[Guo, DD]'s Articles
[Wu, GP]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.