Digital light processing 3D-printing alumina-based ceramic core with high porosity and available strength via adjusting sintering procedures

IF 2.3 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2025-05-07 DOI:10.1111/ijac.15164

Zheng Xiang, Yansong Liu, Yongsheng Liu, Wentan She, Shaolin Fu, Yejie Cao

引用次数: 0

Abstract

This work investigated sintering procedures for high-porosity alumina ceramic cores fabricated by digital light processing 3D-printing. Results showed that increasing sintering temperature reduced cristobalite while enhancing mullite formation. Flexural strength initially increased then declined with temperature, exhibiting an inverse relationship with porosity. Faster heating rates (up to 4°C/min) decreased mullite content and size, yielding peak strength of 23.73 MPa. Extended holding time reduced porosity but caused strength to first increase then decrease, peaking at 29.06 MPa. Optimal performance was achieved at 1450°C with 4°C/min heating and 120 min hold, producing cores with 28.28 MPa strength, 41.40% porosity, and 2.15 g/cm³ density. The process successfully balanced high porosity and mechanical properties at reduced temperatures.

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通过调整烧结程序，数字光处理3d打印具有高孔隙率和可用强度的氧化铝基陶瓷芯

本工作研究了由数字光处理3d打印制造的高孔隙率氧化铝陶瓷芯的烧结过程。结果表明，提高烧结温度可降低方石云石的形成，而促进莫来石的形成。抗弯强度随温度的升高先升高后降低，与孔隙率呈反比关系。升温速度越快（高达4°C/min），莫来石含量和尺寸越小，峰值强度为23.73 MPa。延长保温时间使孔隙率降低，但强度先升高后降低，在29.06 MPa时达到峰值。在1450°C、4°C/min加热和120 min保温条件下，获得了最佳性能，得到的岩心强度为28.28 MPa，孔隙率为41.40%，密度为2.15 g/cm3。该工艺在低温下成功地平衡了高孔隙率和机械性能。

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

International Journal of Applied Ceramic Technology 工程技术-材料科学：硅酸盐

CiteScore

3.90

自引率

9.50%

发文量

280

审稿时长

4.5 months

期刊介绍： The International Journal of Applied Ceramic Technology publishes cutting edge applied research and development work focused on commercialization of engineered ceramics, products and processes. The publication also explores the barriers to commercialization, design and testing, environmental health issues, international standardization activities, databases, and cost models. Designed to get high quality information to end-users quickly, the peer process is led by an editorial board of experts from industry, government, and universities. Each issue focuses on a high-interest, high-impact topic plus includes a range of papers detailing applications of ceramics. Papers on all aspects of applied ceramics are welcome including those in the following areas: Nanotechnology applications; Ceramic Armor; Ceramic and Technology for Energy Applications (e.g., Fuel Cells, Batteries, Solar, Thermoelectric, and HT Superconductors); Ceramic Matrix Composites; Functional Materials; Thermal and Environmental Barrier Coatings; Bioceramic Applications; Green Manufacturing; Ceramic Processing; Glass Technology; Fiber optics; Ceramics in Environmental Applications; Ceramics in Electronic, Photonic and Magnetic Applications;