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Improved thermal conductivity of beta-Si(3)N(4)ceramics by lowering SiO2/Y(2)O(3)ratio using YH(2)as sintering additive
Wang, WD; Yao, DX; Liang, HQ; Xia, YF; Zuo, KH; Yin, JW; Zeng, YP
2020-09-01
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
ISSN0002-7820
Issue10Pages:5567
SubtypeArticle
AbstractA two-step sintering process was conducted to produce beta-Si(3)N(4)ceramics with high thermal conductivity. During the first step, native SiO(2)was eliminated, and Y(2)O(3)was in situ generated by a metal hydride reduction process, resulting in a high Y2O3/SiO(2)ratio. The substitution YH(2)for Y(2)O(3)endow Si(3)N(4)ceramics with an increase of 29% in thermal conductivity from 95.3 to 123 W m(-1) K(-1)after sintered at 1900 degrees C for 12 hours despite an inferior sinterability. This was primarily attributed to the purified enlarged grains, devitrified grain boundary phase, and reduced lattice oxygen content in the YH2-MgO-doped material.
DOI10.1111/jace.17271
WOS KeywordMECHANICAL-PROPERTIES ; MGSIN2 ADDITION ; SILICON-NITRIDE ; BETA-SI3N4 ; OXYGEN ; OXIDE
Language英语
WOS Research AreaMaterials Science
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/27791
Collection中国科学院上海硅酸盐研究所
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GB/T 7714
Wang, WD,Yao, DX,Liang, HQ,et al. Improved thermal conductivity of beta-Si(3)N(4)ceramics by lowering SiO2/Y(2)O(3)ratio using YH(2)as sintering additive[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2020(10):5567.
APA Wang, WD.,Yao, DX.,Liang, HQ.,Xia, YF.,Zuo, KH.,...&Zeng, YP.(2020).Improved thermal conductivity of beta-Si(3)N(4)ceramics by lowering SiO2/Y(2)O(3)ratio using YH(2)as sintering additive.JOURNAL OF THE AMERICAN CERAMIC SOCIETY(10),5567.
MLA Wang, WD,et al."Improved thermal conductivity of beta-Si(3)N(4)ceramics by lowering SiO2/Y(2)O(3)ratio using YH(2)as sintering additive".JOURNAL OF THE AMERICAN CERAMIC SOCIETY .10(2020):5567.
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