以PMMA微球为成孔剂，DLP 3d打印高力学性能双孔YSZ陶瓷

IF 3.5 3区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of the American Ceramic Society Pub Date : 2025-02-16 DOI:10.1111/jace.20432

Yansong Liu, Yongsheng Liu, Yejie Cao, Xiang Zheng, Xiaokun Sun, Yang Xu

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引用次数: 0

摘要

首次以聚甲基丙烯酸甲酯（PMMA）微球为成孔剂，采用数字光加工（DLP）增材制造技术制备了双孔氧化钇稳定氧化锆（YSZ）陶瓷。结果表明，PMMA微球的引入有效降低了用于DLP印刷的光敏YSZ陶瓷浆料的粘度，提高了浆料的固化深度，对浆料的稳定性影响不强。在1400℃烧结后，陶瓷中产生了具有双尺度的孔隙，同时具有最佳的物理力学性能。随着PMMA含量从0 vol%增加到40 vol%，孔隙率从1.96%增加到34.06%，密度从5.92 g/cm3降低到3.82 g/cm3。多孔陶瓷的抗压强度和导热系数分别从350.54和2.80 W/（m·K）下降到99.85 MPa和1.46 W/（m·K）。本研究为制备具有低导热率和高力学性能的多孔YSZ陶瓷开辟了新的前景。

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DLP 3D-printing of dual porous YSZ ceramics with high mechanical properties using PMMA microsphere as pore-forming agent

Dual porous yttria-stabilized zirconia (YSZ) ceramics were fabricated via digital light processing (DLP) additive manufacturing using polymethyl methacrylate (PMMA) microspheres as pore-forming agent for the first time. The results showed that the introduction of PMMA microspheres effectively reduced the viscosity of the photosensitive YSZ ceramic slurry used in DLP printing, improved the cured depth of the slurry, and did not exert a strong influence on stability. After sintering at 1400°C, pores with dual scales were generated in the ceramics, while exhibiting the optimal physical and mechanical properties. With the increase of PMMA content from 0 to 40 vol%, the open porosity increased from 1.96% to 34.06% and the density decreased from 5.92 to 3.82 g/cm³, respectively. The compressive strength and thermal conductivity of porous ceramics decreased from 350.54 to 99.85 MPa and from 2.80 to 1.46 W/(m⋅K), respectively. This investigation opens up new prospects for the fabrication of porous YSZ ceramics with low thermal conductivity and high mechanical properties.

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来源期刊

Journal of the American Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

7.50

自引率

7.70%

发文量

590

审稿时长

2.1 months

期刊介绍： The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials. Papers on fundamental ceramic and glass science are welcome including those in the following areas: Enabling materials for grand challenges[...] Materials design, selection, synthesis and processing methods[...] Characterization of compositions, structures, defects, and properties along with new methods [...] Mechanisms, Theory, Modeling, and Simulation[...] JACerS accepts submissions of full-length Articles reporting original research, in-depth Feature Articles, Reviews of the state-of-the-art with compelling analysis, and Rapid Communications which are short papers with sufficient novelty or impact to justify swift publication.