Shrinkage of ZrO2 green bodies manufactured by vat photopolymerization 3D printing

IF 0.4 4区物理与天体物理 Q4 PHYSICS, MULTIDISCIPLINARY

Russian Physics Journal Pub Date : 2025-02-05 DOI:10.1007/s11182-025-03381-8

S. А. Ghyngazov, E. N. Lysenko, I. P. Vasil’ev, A. S. Svirkov, D. A. Tkachev, Ya. Verkhoshansky

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Abstract

The scope of application of ceramic materials is increasingly widening. Additive manufacturing techniques assist in the production of ceramic materials. Photopolymerization 3D printing technology is one of the most widespread processes of manufacturing articles of complex forms. In this paper, the dilatometric analysis is used to study the shrinkage process of green bodies manufactured from zirconia on a 3D printer. It is shown that shrinkage of green bodies is characterized by the same properties as shrinkage of powder compacts obtained by a conventional ceramic method. After the removal of the polymer binder, the maximum shrinkage rate is observed at the heating stage between 1223 and 1239 °C. The shrinkage process intensively continues during the successive isothermal sintering. Shrinkage grows with increasing sintering temperature and exposure time. Porosity of the green body gradually reduces while sintering. Density, porosity and microhardness of zirconia ceramics sintered from the green body at 1550 °C annealing for 6 h, are detected as 4.7 g/cm³, 12.5% and 4.3 GPa, respectively. The obtained results can be used to fabricate zirconia ceramics with specified density and porosity in certain engineering applications.

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还原光聚合3D打印制备ZrO2绿体的收缩率

陶瓷材料的应用范围日益扩大。增材制造技术有助于陶瓷材料的生产。光聚合3D打印技术是制造复杂形状物品的最广泛的工艺之一。本文采用膨胀分析的方法，研究了三维打印机上氧化锆坯体的收缩过程。结果表明，坯体的收缩率与传统陶瓷方法得到的粉末坯的收缩率具有相同的特性。去除聚合物粘结剂后，在1223 ~ 1239 °C之间的加热阶段观察到最大收缩率。在连续的等温烧结过程中，收缩过程持续不断。收缩率随烧结温度和曝光时间的增加而增大。烧结过程中坯体孔隙率逐渐降低。在1550 °C退火6 h下烧结的氧化锆陶瓷的密度、孔隙率和显微硬度分别为4.7 g/cm3、12.5%和4.3 GPa。所得结果可用于在某些工程应用中制备具有特定密度和孔隙率的氧化锆陶瓷。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Russian Physics Journal PHYSICS, MULTIDISCIPLINARY-

CiteScore

1.00

自引率

50.00%

发文量

208

审稿时长

3-6 weeks

期刊介绍： Russian Physics Journal covers the broad spectrum of specialized research in applied physics, with emphasis on work with practical applications in solid-state physics, optics, and magnetism. Particularly interesting results are reported in connection with: electroluminescence and crystal phospors; semiconductors; phase transformations in solids; superconductivity; properties of thin films; and magnetomechanical phenomena.