Properties comparison of dielectric ceramic parts manufactured by powder pressing and injection molding

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

International Journal of Applied Ceramic Technology Pub Date : 2024-12-13 DOI:10.1111/ijac.15007

Z. Chen, T. Li, S. L. Liew, S. Wang, L. Chen

引用次数: 0

Abstract

Dual-phase dielectric ceramic samples of Mg₂SiO₄/Ba(AlSiO₄)₂ were fabricated by ceramic injection molding (CIM), and they were systematically compared with the ones fabricated by conventional powder pressing (CP). It was found that by tuning the processing parameters, CIM samples with density, microstructure, grain size, and phase composition comparable with the CP counterparts can be produced. With optimized processing parameters, CIM samples with a relative density of 94.2% were accomplished, along with homogeneous phase distribution and uniform grain size. Meanwhile, satisfactory dielectric properties were also achieved (a dielectric constant of 6.67, a temperature coefficient of −0.94 ppm/°C, and a quality factor of 352,000 GHz). Moreover, a demonstrator with various blind holes and slots was fabricated by the CIM method, which exhibited good geometrical integrity, uniform microstructure, and consistent mechanical properties.

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粉末压制与注射成型电介质陶瓷件的性能比较

采用陶瓷注射成型（CIM）法制备了Mg2SiO4/Ba(AlSiO4)2双相介电陶瓷样品，并与常规粉末压制（CP）法制备的样品进行了系统比较。结果表明，通过调整工艺参数，可以制备出密度、微观结构、晶粒尺寸和相组成与CP相当的CIM样品。优化后的工艺参数可制得相对密度为94.2%、相分布均匀、晶粒尺寸均匀的CIM样品。同时，获得了满意的介电性能（介电常数为6.67，温度系数为- 0.94 ppm/°C，质量因子为352,000 GHz）。采用CIM方法制作了具有多种盲孔和盲槽的样品，样品具有良好的几何完整性、均匀的微观结构和一致的力学性能。

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;