SIC OpenIR
High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives
Duan, Yusen; Zhang, Jingxian; Li, Xiaoguang; Bai, Hainan; Sajgalik, Pavol; Jiang, Dongliang
2019-07-01
Source PublicationINTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
ISSN1546-542X
Volume16Issue:4Pages:1399
SubtypeArticle
AbstractSilicon nitride ceramics were pressureless sintered at low temperature using ternary sintering additives (TiO2, MgO and Y2O3), and the effects of sintering aids on thermal conductivity and mechanical properties were studied. TiO2-Y2O3-MgO sintering additives will react with the surface silica present on the silicon nitride particles to form a low melting temperature liquid phase which allows liquid phase sintering to occur and densification of the Si3N4. The highest flexural strength was 791(+/- 20) MPa with 12 wt% additives sintered at 1780 degrees C for 2 hours, comparable to the samples prepared by gas pressure sintering. Fracture toughness of all the specimens was higher than 7.2 MPa center dot m(1/2) as the sintering temperature was increased to 1810 degrees C. Thermal conductivity was improved by prolonging the dwelling time and adopting the annealing process. The highest thermal conductivity of 74 W/(m center dot K) was achieved with 9 wt% sintering additives sintered at 1810 degrees C with 4 hours holding followed by postannealing.
Keywordpressureless sintering silicon nitride ternary sintering additives thermal conductivity
DOI10.1111/ijac.13220
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27016
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Duan, Yusen,Zhang, Jingxian,Li, Xiaoguang,et al. High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives[J]. INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,2019,16(4):1399.
APA Duan, Yusen,Zhang, Jingxian,Li, Xiaoguang,Bai, Hainan,Sajgalik, Pavol,&Jiang, Dongliang.(2019).High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives.INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY,16(4),1399.
MLA Duan, Yusen,et al."High thermal conductivity silicon nitride ceramics prepared by pressureless sintering with ternary sintering additives".INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY 16.4(2019):1399.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Duan, Yusen]'s Articles
[Zhang, Jingxian]'s Articles
[Li, Xiaoguang]'s Articles
Baidu academic
Similar articles in Baidu academic
[Duan, Yusen]'s Articles
[Zhang, Jingxian]'s Articles
[Li, Xiaoguang]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Duan, Yusen]'s Articles
[Zhang, Jingxian]'s Articles
[Li, Xiaoguang]'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.