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Träfflista för sökning "WFRF:(Yang Xianfeng) srt2:(2021)"

Sökning: WFRF:(Yang Xianfeng) > (2021)

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1.
  • He, Qinglong, et al. (författare)
  • Additive manufacturing of dense zirconia ceramics by fused deposition modeling via screw extrusion
  • 2021
  • Ingår i: Journal of the European Ceramic Society. - : Elsevier BV. - 0955-2219 .- 1873-619X. ; 41:1, s. 1033-1040
  • Tidskriftsartikel (refereegranskat)abstract
    • A fused deposition modeling(FDM)system via screw extrusion suitable for feeding granular feedstocks with high solid loading was developed. Key parameters included aspect ratio of the screw, the compression ratio and pitch etc. In order to get constant extruded mass flow and wire diameter a processing window was determined by optimizing the barrel temperature, the nozzle diameter and the screwing speed. Microstructural characterization coupled with flexural strength measurement revealed that a higher printing temperature was beneficial to the inter layer bonding. The sintered zirconia ceramic samples with 99% of theoretical density of the 3 mol% yttria stabilized tetragonal zirconia polycrystal (3Y-TZP) and flexural strength of 890 +/- 60 MPa was obtained. A set of zirconia ceramic parts with complex geometries and controllable dimensional accuracy was also successfully prepared for demonstrating the potential of the technique.
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2.
  • Xie, Hehan, et al. (författare)
  • 3D gel printing of alumina ceramics followed by efficient multi-step liquid desiccant drying
  • 2021
  • Ingår i: Journal of the European Ceramic Society. - : Elsevier BV. - 0955-2219 .- 1873-619X. ; 41:13, s. 6634-6640
  • Tidskriftsartikel (refereegranskat)abstract
    • Dense alumina ceramics were additively manufactured efficiently through a 3D gel printing process. Hydroxyethyl cellulose (HEC) was applied to ensure the printability and rigid of the gel made from boehmite. A multi-step liquid desiccant drying method was implemented to improve the drying efficiency. The results showed that the solid loading and HEC addition were two useful parameters for adjusting the rheology properties of the gel to make it suitable for 3D printing. With polyethylene glycol(PEG) added as liquid desiccants, the printed bodies with section size of 10 mm could be dried within 26 h during which the deformation and crack formation was avoided despite a high linear shrinkage of 45 % was encountered. The successful preparation of dense monolithic alumna ceramics parts with an average grain size of 1 μm, 99 % of the theoretical density and a flexural strength of 380 ± 45 MPa indicated the potential of this process.
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  • Resultat 1-2 av 2
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tidskriftsartikel (2)
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refereegranskat (2)
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Shen, Zhijian (2)
Yang, Xianfeng (2)
Zhou, Zhe (2)
Zhao, Wei (1)
Liu, Peng (1)
Zhang, Li (1)
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He, Qinglong (1)
Jiang, Jie (1)
Zhong, Yuan (1)
Xie, Hehan (1)
Xu, Xiewen (1)
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2021 (2)Ta bort avgränsningen

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