Molten Salt Assisted Synthesis of Dy3Si2C2 Coated SiC Powders and Sintering Behavior of SiC Ceramics
文献类型：期刊论文
| 作者 | Wan Peng; Li Mian; Huang Qing |
| 刊名 | JOURNAL OF INORGANIC MATERIALS
 |
| 出版日期 | 2021 |
| 卷号 | 36期号:1 |
| 关键词 | SILICON-CARBIDE CERAMICS RARE-EARTH-OXIDE THERMAL-CONDUCTIVITY ADDITIVES |
| 英文摘要 | Silicon carbide is widely used because of its excellent physical and chemical properties. The chemical bonding characteristics of SiC make it difficult to be sintered. Therefore, preparation of high-quality SiC ceramics is one of the challenges in SiC research field. In this study, the ternary rare-earth carbide Dy3Si2C2 was proposed as a new sintering additive for SiC ceramics, through the phase transition of Dy-Si-C system at high temperatures to promote the densification of SiC. The Dy3Si2C2 coated SiC powders were synthesized via an in-situ reaction between metal Dy and SiC in high temperature molten salts. The Dy3Si2C2 coated SiC powder was sintered by spark plasma sintering (SPS), at 1800 degrees C, 45 MPa. As the result, high-purity SiC ceramic with the density of 99% and thermal conductivity of 162.8 W.m(-1) .K-1 was obtained to form the Dy3Si2C2 raw material with n(Dy) n(SiC)=1 : 4. Further study shows that Dy3Si2C2 and SiC undergo a eutectic reaction at high temperatures, which generates liquid phase at the grain boundaries and promotes the densification of SiC ceramics. This study shows that the ternary rare-earth carbides Re3Si2C2 (Re=La, Ce...) has great potential to be used as the sintering additive for SiC. |
| 源URL | [http://ir.nimte.ac.cn/handle/174433/22275]  |
| 专题 | 中国科学院宁波材料技术与工程研究所 2021专题_期刊论文 |
| 作者单位 | 1.Wan, P (corresponding author), Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China. 2.Wan, P (corresponding author), Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, Engn Lab Adv Energy Mat, Ningbo 315201, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Wan Peng,Li Mian,Huang Qing. Molten Salt Assisted Synthesis of Dy3Si2C2 Coated SiC Powders and Sintering Behavior of SiC Ceramics[J]. JOURNAL OF INORGANIC MATERIALS,2021,36(1). |
| APA | Wan Peng,Li Mian,&Huang Qing.(2021).Molten Salt Assisted Synthesis of Dy3Si2C2 Coated SiC Powders and Sintering Behavior of SiC Ceramics.JOURNAL OF INORGANIC MATERIALS,36(1). |
| MLA | Wan Peng,et al."Molten Salt Assisted Synthesis of Dy3Si2C2 Coated SiC Powders and Sintering Behavior of SiC Ceramics".JOURNAL OF INORGANIC MATERIALS 36.1(2021). |
入库方式： OAI收割
来源：宁波材料技术与工程研究所
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