Digital light processing of ceria-stabilized zirconia: Role of powder pre-treatment on printability and physico-mechanical properties

IF 5.8 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Journal of The European Ceramic Society Pub Date : 2025-05-05 DOI:10.1016/j.jeurceramsoc.2025.117512

Bartolomeo Coppola, Elisa Fiume, Vanessa Terranova, Laura Montanaro, Paola Palmero

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Abstract

In this study, the role of pre-treatment of a ceria-stabilized zirconia powder on slurry printability in Digital Light Processing as well as on density, microstructural features and flexural strength of the sintered materials was investigated. Three powder batches, namely un-milled, ball-milled, and ball-milled and thermally post-treated were compared. Ball-milling induced tetragonal-to-monoclinic phase transformation and the appearance of oxygen vacancies. The thermal post-treatment was effective in restoring a higher tetragonal phase content and the starting cerium oxidation state. Slurries with a fixed solid loading (41 vol%) and variable amounts of dispersant were prepared. Different curing behaviors and, consequently, different qualities of the printed parts were observed. The milled and thermally treated powder was used to produce high-density sintered materials characterized by submicrometric grains (≅ 600 nm) and high flexural strength (≅ 560 MPa).

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数字光处理氧化铈稳定氧化锆：粉末预处理对印刷适性和物理机械性能的影响

在这项研究中，研究了预处理铈稳定的氧化锆粉末对数字光处理中浆料印刷性能的影响，以及对烧结材料的密度、微观结构特征和抗弯强度的影响。对未磨粉、球磨粉和球磨后热处理的三种粉末进行了比较。球磨诱导四方向单斜相变和氧空位的出现。热后处理能有效地恢复较高的四方相含量和起始氧化态。制备了固定固体负荷（41 vol%）和可变分散剂用量的浆料。观察到不同的固化行为，从而观察到不同的打印件质量。通过对粉末进行研磨和热处理，制备出具有亚微米级晶粒（= 600 nm）和高抗弯强度（= 560 MPa）的高密度烧结材料。

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来源期刊

Journal of The European Ceramic Society 工程技术-材料科学：硅酸盐

CiteScore

10.70

自引率

12.30%

发文量

863

审稿时长

35 days

期刊介绍： The Journal of the European Ceramic Society publishes the results of original research and reviews relating to ceramic materials. Papers of either an experimental or theoretical character will be welcomed on a fully international basis. The emphasis is on novel generic science concerning the relationships between processing, microstructure and properties of polycrystalline ceramics consolidated at high temperature. Papers may relate to any of the conventional categories of ceramic: structural, functional, traditional or composite. The central objective is to sustain a high standard of research quality by means of appropriate reviewing procedures.