Regulation of sintering procedure on property of DLP-printing SiO2–Al2O3 ceramic: Key of cristobalite precipitation

IF 1.8 4区材料科学 Q2 MATERIALS SCIENCE, CERAMICS

International Journal of Applied Ceramic Technology Pub Date : 2024-12-11 DOI:10.1111/ijac.15005

Yansong Liu, Wenbo Li, Yongsheng Liu, Yu Pan, Yejie Cao, Xiang Zheng, Jian Chen, Yijiang Zeng

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Abstract

In this work, alumina was selected as the second phase reinforced fused quartz ceramics and SiO₂–Al₂O₃ composite ceramics were fabricated via digital light processing (DLP) 3D-printing. The effect of the sintering procedure on the mechanical and dielectric properties of SiO₂–Al₂O₃ composite ceramics were investigated in detail. The results show that the amount of cristobalite precipitation is the key factor affecting the properties of composite ceramics. The amount of cristobalite precipitation in composite ceramics could be controlled effectively by adjusting the heating rate, holding time, and sintering temperature. The sintering procedure is set as the heating rate of 4°C/min, sintering temperature of 1200°C, and holding time for 2 h, the flexural strength of SiO₂–Al₂O₃ composite ceramic is 47.13 MPa, dielectric constant ranges from 2.90 to 2.97, and the tangent of loss angle is less than 0.041. SiO₂–Al₂O₃ composite ceramics with high flexural strength and low dielectric constant were obtained by sintering procedure screening and optimization.

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烧结工艺对dlp印刷SiO2-Al2O3陶瓷性能的影响：方石英沉淀的关键

本研究选择氧化铝作为第二相增强熔融石英陶瓷，通过数字光处理（DLP） 3d打印制备SiO2-Al2O3复合陶瓷。研究了烧结工艺对SiO2-Al2O3复合陶瓷力学性能和介电性能的影响。结果表明，方石英的析出量是影响复合陶瓷性能的关键因素。通过调节加热速率、保温时间和烧结温度，可以有效地控制复合陶瓷中方石英的析出量。烧结工艺设定为升温速度4℃/min，烧结温度1200℃，保温时间2 h， SiO2-Al2O3复合陶瓷的抗折强度为47.13 MPa，介电常数为2.90 ~ 2.97，损耗角正切值小于0.041。通过烧结工艺筛选和优化，获得了高抗弯强度、低介电常数的SiO2-Al2O3复合陶瓷。

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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;