Controlled microstructure, thermal and mechanical property anisotropy of binder jetting 3D-printed SiC ceramics by reaction bonding

Xiaotong Chen; Xiong Gao; Wenqing Wang; Rujie He

doi:10.1016/j.ceramint.2026.01.234

Controlled microstructure, thermal and mechanical property anisotropy of binder jetting 3D-printed SiC ceramics by reaction bonding

Xiaotong Chen
, Xiong Gao
, Wenqing Wang^*
, Rujie He^*

^*Corresponding author for this work

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

This study explores the anisotropy in SiC ceramics fabricated by Binder Jetting (BJ) 3D printing. BJ-3D printing forms complex SiC shapes but introduces interlayer defects, causing anisotropy. SiC green bodies were printed in various directions, and their mechanical properties were tested. The green bodies built parallel to the printing direction had the highest flexural strength, while other directions showed a 40 % – 53 % reduction. After reaction bonding and sintering, the anisotropy decreased significantly. The flexural strength of samples built parallel to the printing direction was 229.36 MPa, with other directions showing only a 7 % – 14 % reduction. The anisotropy evaluation index (σ₀/σ_x) decreased from 2.13 to 1.09 after reaction bonding. Thermal properties of sintered SiC in different directions showed no significant differences. Reaction bonding effectively reduces anisotropy, providing valuable insights for BJ-3D printed SiC ceramics.

Original language	English
Pages (from-to)	10587-10596
Number of pages	10
Journal	Ceramics International
Volume	52
Issue number	8
DOIs	https://doi.org/10.1016/j.ceramint.2026.01.234
Publication status	Published - Mar 2026
Externally published	Yes

Keywords

3D printing
Anisotropy
Binder jetting
Reaction bonding
Silicon carbide

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10.1016/j.ceramint.2026.01.234

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title = "Controlled microstructure, thermal and mechanical property anisotropy of binder jetting 3D-printed SiC ceramics by reaction bonding",

abstract = "This study explores the anisotropy in SiC ceramics fabricated by Binder Jetting (BJ) 3D printing. BJ-3D printing forms complex SiC shapes but introduces interlayer defects, causing anisotropy. SiC green bodies were printed in various directions, and their mechanical properties were tested. The green bodies built parallel to the printing direction had the highest flexural strength, while other directions showed a 40 \% – 53 \% reduction. After reaction bonding and sintering, the anisotropy decreased significantly. The flexural strength of samples built parallel to the printing direction was 229.36 MPa, with other directions showing only a 7 \% – 14 \% reduction. The anisotropy evaluation index (σ0/σx) decreased from 2.13 to 1.09 after reaction bonding. Thermal properties of sintered SiC in different directions showed no significant differences. Reaction bonding effectively reduces anisotropy, providing valuable insights for BJ-3D printed SiC ceramics.",

keywords = "3D printing, Anisotropy, Binder jetting, Reaction bonding, Silicon carbide",

author = "Xiaotong Chen and Xiong Gao and Wenqing Wang and Rujie He",

note = "Publisher Copyright: {\textcopyright} 2026 Elsevier Ltd and Techna Group S.r.l. All rights are reserved, including those for text and data mining, AI training, and similar technologies.",

year = "2026",

month = mar,

doi = "10.1016/j.ceramint.2026.01.234",

language = "English",

volume = "52",

pages = "10587--10596",

journal = "Ceramics International",

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T1 - Controlled microstructure, thermal and mechanical property anisotropy of binder jetting 3D-printed SiC ceramics by reaction bonding

AU - Chen, Xiaotong

AU - Gao, Xiong

AU - Wang, Wenqing

AU - He, Rujie

PY - 2026/3

Y1 - 2026/3

N2 - This study explores the anisotropy in SiC ceramics fabricated by Binder Jetting (BJ) 3D printing. BJ-3D printing forms complex SiC shapes but introduces interlayer defects, causing anisotropy. SiC green bodies were printed in various directions, and their mechanical properties were tested. The green bodies built parallel to the printing direction had the highest flexural strength, while other directions showed a 40 % – 53 % reduction. After reaction bonding and sintering, the anisotropy decreased significantly. The flexural strength of samples built parallel to the printing direction was 229.36 MPa, with other directions showing only a 7 % – 14 % reduction. The anisotropy evaluation index (σ0/σx) decreased from 2.13 to 1.09 after reaction bonding. Thermal properties of sintered SiC in different directions showed no significant differences. Reaction bonding effectively reduces anisotropy, providing valuable insights for BJ-3D printed SiC ceramics.

AB - This study explores the anisotropy in SiC ceramics fabricated by Binder Jetting (BJ) 3D printing. BJ-3D printing forms complex SiC shapes but introduces interlayer defects, causing anisotropy. SiC green bodies were printed in various directions, and their mechanical properties were tested. The green bodies built parallel to the printing direction had the highest flexural strength, while other directions showed a 40 % – 53 % reduction. After reaction bonding and sintering, the anisotropy decreased significantly. The flexural strength of samples built parallel to the printing direction was 229.36 MPa, with other directions showing only a 7 % – 14 % reduction. The anisotropy evaluation index (σ0/σx) decreased from 2.13 to 1.09 after reaction bonding. Thermal properties of sintered SiC in different directions showed no significant differences. Reaction bonding effectively reduces anisotropy, providing valuable insights for BJ-3D printed SiC ceramics.

KW - 3D printing

KW - Anisotropy

KW - Binder jetting

KW - Reaction bonding

KW - Silicon carbide

UR - https://www.scopus.com/pages/publications/105034482482

U2 - 10.1016/j.ceramint.2026.01.234

DO - 10.1016/j.ceramint.2026.01.234

M3 - Article

AN - SCOPUS:105034482482

SN - 0272-8842

VL - 52

SP - 10587

EP - 10596

JO - Ceramics International

JF - Ceramics International

IS - 8

ER -

Controlled microstructure, thermal and mechanical property anisotropy of binder jetting 3D-printed SiC ceramics by reaction bonding

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Keywords

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