Micro powder injection molding of boron carbide components with SiC-Al2O3-Y2O3 sintering additives

Wang, Changrui; Li, Zhiyou; Tian, Wei; Li, Yuxian; Tang, Lina; Pang, Qilong; Chen, Minghe

doi:10.1016/j.cja.2020.08.005

Cited by 5 publications

(3 citation statements)

References 41 publications

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“…The relative density of composites increased from 96.7% to 98.7% with an increase in Al 2 O 3 –Y 2 O 3 content (10–14 wt%). The liquid‐phase YAG facilitates the diffusion and rearrangement of SiC particles during high‐temperature sintering 30 . More YAG phases are produced with an increase of sintering additives, which further promote the densification of the composites.…”

Section: Resultsmentioning

confidence: 99%

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Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

Chen,

Yang

et al. 2024

J Am Ceram Soc.

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In this work, stacked SiC fibers paper‐reinforced SiC ceramic matrix composites (SiCnf/SiC CMCs) were prepared by nanoimpregnation and transient eutectic (NITE) process using ultra‐long single‐crystal SiC nanofibers. The effect of the SiCnf surface modification via boron nitride (BN) interphase deposition as well as the sintering additive (Al2O3–Y2O3) content on the density, microstructure, and mechanical properties of SiCnf/SiC CMCs has been investigated systematically. The results revealed that the laminated SiCnf/SiC CMCs feature a significant saw‐tooth‐like curve on the load–displacement test, which indicates that the obtained laminated structure with the weak interlayer binding owning to the BN coating treatment possesses significant toughening to the SiC ceramics. Specifically, the SiCnf/SiC CMCs with the sintering additive content of 12 wt% revealed a fracture toughness of over 10 MPa m1/2 after 60 min of BN interface deposition, which is 104.31% higher than that of the composites prepared without BN coating.

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Section: Resultsmentioning

confidence: 99%

“…The liquid-phase YAG facilitates the diffusion and rearrangement of SiC particles during high-temperature sintering. 30 More YAG phases are produced with an increase of sintering additives, which further promote the densification of the composites.…”

Section: Characterizationsmentioning

confidence: 99%

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

Chen,

Yang

et al. 2024

J Am Ceram Soc.

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“…Binders used in CIM mainly consists of three functional components including: lubricants providing rheological properties for feedstock, macromolecular binders maintaining the shape integrity of green parts and debound compacts, as well as surfactants improving compatibility between ceramic powders and other organic binders [19]. CIM technology was used to fabricate a series of ceramic materials as follows: Al 2 O 3 [20,21], ZrO 2 [19,22], CaO[18], SiO 2 [23], MgAl 2 O 4 [24,25], SiC[26], B 4 C [27], AlN [13], Si 3 N 4 [28] and ZrB 2 [29] et al Through this near net shaping CIM process, a large quantity of ceramic parts have been synthesized in recent years. Qin et al [13] reported the CIM of complex shaped AlN ceramic with high thermal conductivity and successfully synthesized AlN heat sinks.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution of (MgCoNiZnCu)O High Entropy Oxides Using Ceramic Injection Molding

Zhao

Chen

et al. 2021

Preprint

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Near net shaping ceramic injection molding process of (MgCoNiZnCu)O high entropy oxides were conducted using commercial precursor oxide powders. Through ball milling, internal mixing, injection molding, solvent and thermal debinding as well as final sintering process, the ceramic products would be obtained with little machining. Compacts prepared are single rock-salt phase based on XRD and EDS Mapping results. Meanwhile, with the increasing of sintering temperature from 900 ℃ to 1050 ℃, particle diffusion rate and densification of samples becomes faster, which finally results relative density and fractured strength of sintered compacts reaching the highest (90.47 % and 77.98 MPa, respectively) in current work. The successfully synthesis of (MgCoNiZnCu)O through ceramic injection molding illustrates this near net shaping process could be a promising route for preparation of high entropy oxides.

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Tailoring structural and mechanical properties of Cf/SiC ceramic matrix composites with BN/SiAlC interphases

Ahmad,

Chen,

Chen

et al. 2024

Ceramics International

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Micro powder injection molding of boron carbide components with SiC-Al2O3-Y2O3 sintering additives

Cited by 5 publications

References 41 publications

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

Microstructure and mechanical properties of multilayer SiC nanofiber paper‐reinforced SiC composites by the NITE method

Microstructure Evolution of (MgCoNiZnCu)O High Entropy Oxides Using Ceramic Injection Molding

Tailoring structural and mechanical properties of Cf/SiC ceramic matrix composites with BN/SiAlC interphases

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