Molten Salt Assisted Synthesis of Dy3Si2C2 Coated SiC Powders and Sintering Behavior of SiC Ceramics

Peng WAN; Mian LI; Qing HUANG

doi:10.15541/jim20200068

Journals >Journal of Inorganic Materials >Volume 36 >Issue 1 >Page 49 > Article

Journal of Inorganic Materials
Vol. 36, Issue 1, 49 (2021)

Molten Salt Assisted Synthesis of Dy₃Si₂C₂ Coated SiC Powders and Sintering Behavior of SiC Ceramics

Peng WAN^1,2, Mian LI¹, and Qing HUANG^1,*

Author Affiliations

¹Engineering Laboratory of Advanced Energy Materials, Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201, China

²State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China;

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DOI: 10.15541/jim20200068 Cite this Article

Peng WAN, Mian LI, Qing HUANG. Molten Salt Assisted Synthesis of Dy₃Si₂C₂ Coated SiC Powders and Sintering Behavior of SiC Ceramics[J]. Journal of Inorganic Materials, 2021, 36(1): 49 Copy Citation Text

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(a) XRD patterns of the SiC and SiC-Dy3Si2C2 raw materials prepared with different molar ratios, SEM images of (b) SiC and (c) SiC-Dy3Si2C2

1. (a) XRD patterns of the SiC and SiC-Dy₃Si₂C₂raw materials prepared with different molar ratios, SEM images of (b) SiC and (c) SiC-Dy₃Si₂C₂

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(a) XRD and (b-f) SEM images of sintered pure SiC ceramics and SiC ceramics sintered from SiC-Dy3Si2C2 raw materials with different molar ratios

2. (a) XRD and (b-f) SEM images of sintered pure SiC ceramics and SiC ceramics sintered from SiC-Dy₃Si₂C₂raw materials with different molar ratios

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3. (a) TEM image and (b) EDS analysis of SiC ceramics sintered from raw materials with ratio of n(Dy) : n(SiC)=1 : 4; (c) HR-TEM of the marked area 1 in (a); (d) HR-TEM image of the marked area 2 in (a)

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4. Displacement curves of piston on the SiC ceramic during the SPS sintering

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Specimen	Density/(g·cm^-3)	Heat capacity/(J·g^-1·K^-1)	Thermal diffusion/(mm²·s^-1)	Phonon mean free path/nm	Thermal conductivity /(W·m^-1·K^-1)
n(Dy) : n(SiC)=1 : 8(1800 ℃)	3.321	0.649	54.3	13.8	117.1
n(Dy) : n(SiC)=1 : 6(1800 ℃)	3.589	0.533	52.1	13.2	99.8
n(Dy) : n(SiC)=1 : 4(1800 ℃)	3.228	0.683	73.8	18.7	162.8
n(Dy) : n(SiC)=1 : 4(1700 ℃)	3.306	0.648	58.0	16.5	124.3

Table 1.

SiC陶瓷的密度和热物理参数

Peng WAN, Mian LI, Qing HUANG. Molten Salt Assisted Synthesis of Dy₃Si₂C₂ Coated SiC Powders and Sintering Behavior of SiC Ceramics[J]. Journal of Inorganic Materials, 2021, 36(1): 49

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