Novel low-shrinkage and soluble heavy calcium carbonate matrix ceramic cores prepared by binder jetting

IF 5.1 2区材料科学 Q1 MATERIALS SCIENCE, CERAMICS

Ceramics International Pub Date : 2025-04-01 DOI:10.1016/j.ceramint.2025.01.184

Xiaopeng Yu, Yanqing Niu, Wenming Jiang, Li Yang, Ziwei Peng, Qingsong Wei, Zitian Fan

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Abstract

In the present work, the novel low-shrinkage and soluble heavy calcium carbonate matrix ceramic cores were developed using binder jetting (BJ) technology with SiO₂ as an additive and heavy calcium carbonate (HCC, CaMg(CO₃)₂) as the matrix material. The effect of SiO₂ content on the sintering shrinkage, properties and solubility of the ceramic cores was systematically investigated. It was found that the addition of SiO₂ significantly improved the shrinkage of the ceramic cores. As the amount of SiO₂ increased, the shrinkage in all axes of the ceramic cores decreased, but excessive SiO₂ led to excessive liquid phase sintering, which caused an increase in shrinkage. When the SiO₂ addition was 6 wt%, the shrinkages in the X, Y, and Z axes were 7.09, 7.48, and 9.45 %, respectively, representing a 70 % decrease compared to the cores without SiO₂. Conversely, the bending strength of the ceramic cores initially decreased and then increased with the increase in SiO₂ content. The lowest bending strength of 4.93 MPa was observed at 6 wt% SiO₂ content. Although the strength of the ceramic cores is lower under this condition, it still meets the requirements for practical production. The soluble ceramic cores begin to disintegrate after being immersed in hot water for 10 min, with significant disintegration observed after 60 min, indicating that the ceramic cores fabricated in this study possess good solubility.

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用粘结剂喷射法制备新型低收缩可溶重质碳酸钙基陶瓷芯

采用粘结剂喷射（BJ）技术，以SiO2为添加剂，以重质碳酸钙（HCC, CaMg(CO3)2）为基体材料，制备了新型低收缩、可溶的重质碳酸钙基陶瓷芯。系统地研究了SiO2含量对陶瓷芯的烧结收缩率、性能和溶解度的影响。结果表明，SiO2的加入显著改善了陶瓷芯的收缩率。随着SiO2含量的增加，陶瓷芯各轴的收缩率减小，但SiO2含量过多导致液相烧结过度，导致收缩率增大。当SiO2添加量为6 wt%时，岩心在X、Y和Z轴上的收缩率分别为7.09、7.48和9.45%，与未添加SiO2的岩心相比减少了70%。相反，随着SiO2含量的增加，陶瓷芯的抗弯强度呈先降低后升高的趋势。SiO2含量为6 wt%时，材料的抗弯强度最低，为4.93 MPa。虽然在这种条件下陶瓷芯的强度较低，但仍能满足实际生产的要求。可溶性陶瓷芯在热水中浸泡10 min后开始崩解，60 min后崩解明显，说明本研究制备的陶瓷芯具有良好的溶解度。

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来源期刊

Ceramics International 工程技术-材料科学：硅酸盐

CiteScore

9.40

自引率

15.40%

发文量

4558

审稿时长

25 days

期刊介绍： Ceramics International covers the science of advanced ceramic materials. The journal encourages contributions that demonstrate how an understanding of the basic chemical and physical phenomena may direct materials design and stimulate ideas for new or improved processing techniques, in order to obtain materials with desired structural features and properties. Ceramics International covers oxide and non-oxide ceramics, functional glasses, glass ceramics, amorphous inorganic non-metallic materials (and their combinations with metal and organic materials), in the form of particulates, dense or porous bodies, thin/thick films and laminated, graded and composite structures. Process related topics such as ceramic-ceramic joints or joining ceramics with dissimilar materials, as well as surface finishing and conditioning are also covered. Besides traditional processing techniques, manufacturing routes of interest include innovative procedures benefiting from externally applied stresses, electromagnetic fields and energetic beams, as well as top-down and self-assembly nanotechnology approaches. In addition, the journal welcomes submissions on bio-inspired and bio-enabled materials designs, experimentally validated multi scale modelling and simulation for materials design, and the use of the most advanced chemical and physical characterization techniques of structure, properties and behaviour. Technologically relevant low-dimensional systems are a particular focus of Ceramics International. These include 0, 1 and 2-D nanomaterials (also covering CNTs, graphene and related materials, and diamond-like carbons), their nanocomposites, as well as nano-hybrids and hierarchical multifunctional nanostructures that might integrate molecular, biological and electronic components.