TY - JOUR
T1 - Stereolithography additive manufacturing and sintering approaches of SiC ceramics
AU - Bai, Xuejian
AU - Ding, Guojiao
AU - Zhang, Keqiang
AU - Wang, Wenqing
AU - Zhou, Niping
AU - Fang, Daining
AU - He, Rujie
N1 - Publisher Copyright:
© 2020 The Authors
PY - 2021/3
Y1 - 2021/3
N2 - Stereolithography additive manufacturing (SL-AM) has been reported to produce SiC ceramic recently. However, both the density and strength of the stereolithography additive manufactured SiC ceramic need to be improved. In this study, different sintering approaches, including liquid phase sintering (LPS), precursor infiltration and pyrolysis (PIP), and liquid silicon infiltration (LSI), were applied based on the SL-AM prepared SiC green bodies. SiC sintered bodies were finally obtained. In each condition, the relative density, crystalline phases, microstructure, and flexural strength were investigated in detail. The relative density of the LPS-sintered SiC, PIP-sintered SiC, and LSI-sintered SiC ceramics were 78.2 ± 1.36%, 82.6 ± 0.48%, and 96.2 ± 0.32%, respectively. And the strength of the LPS-sintered SiC, PIP-sintered SiC, and LSI-sintered SiC body were 77 ± 5.2 MPa, 184.2 ± 8.5 MPa, and 210.4 ± 10.3 MPa, respectively. The density and strength were compared to each other, as well as other additive manufacturing results and traditional results. At last, LSI is found to be the most promising sintering approach for stereolithography additive manufactured SiC ceramic.
AB - Stereolithography additive manufacturing (SL-AM) has been reported to produce SiC ceramic recently. However, both the density and strength of the stereolithography additive manufactured SiC ceramic need to be improved. In this study, different sintering approaches, including liquid phase sintering (LPS), precursor infiltration and pyrolysis (PIP), and liquid silicon infiltration (LSI), were applied based on the SL-AM prepared SiC green bodies. SiC sintered bodies were finally obtained. In each condition, the relative density, crystalline phases, microstructure, and flexural strength were investigated in detail. The relative density of the LPS-sintered SiC, PIP-sintered SiC, and LSI-sintered SiC ceramics were 78.2 ± 1.36%, 82.6 ± 0.48%, and 96.2 ± 0.32%, respectively. And the strength of the LPS-sintered SiC, PIP-sintered SiC, and LSI-sintered SiC body were 77 ± 5.2 MPa, 184.2 ± 8.5 MPa, and 210.4 ± 10.3 MPa, respectively. The density and strength were compared to each other, as well as other additive manufacturing results and traditional results. At last, LSI is found to be the most promising sintering approach for stereolithography additive manufactured SiC ceramic.
KW - Liquid phase sintering
KW - Liquid silicon infiltration
KW - Precursor infiltration and pyrolysis
KW - SiC
KW - Stereolithography additive manufacturing
UR - http://www.scopus.com/inward/record.url?scp=85106865427&partnerID=8YFLogxK
U2 - 10.1016/j.oceram.2020.100046
DO - 10.1016/j.oceram.2020.100046
M3 - Article
AN - SCOPUS:85106865427
SN - 2666-5395
VL - 5
JO - Open Ceramics
JF - Open Ceramics
M1 - 100046
ER -
