Influence of solid loading on microstructure evolution and thermal conductivity of aluminum nitride ceramics fabricated by digital light processing 3D printing

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

Journal of The European Ceramic Society Pub Date : 2024-10-29 DOI:10.1016/j.jeurceramsoc.2024.117028

Yuxin Tang , Song Hu , Zhenhai Xue , Guohong Zhou

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引用次数: 0

Abstract

Efficient thermal management is essential to reduce hot spot temperature of high-power opto-electronic components and improve their working efficiency. In this work, AlN ceramics with high density and thermal conductivity properties were fabricated using a joint process of digital light processing (DLP) 3D printing and micro-pressure-assisted sintering method. Effects of solid loading on microstructure evolution and thermal properties of the ceramics were systematically discussed. AlN ceramic mini-channel heat sinks were designed and fabricated using the optimized DLP 3D printing and sintering parameters. The thermal management performances of the ceramic heat sinks were evaluated by investigating the optoelectronic property of the encapsulated laser diode module. Results indicated that the laser diode module could be long-timely operated at full driven power. This study provided a new strategy for fabricating high performance AlN ceramics with complex configurations and highlighted the technical potential of AlN ceramic heat sink with compact coolant channels.

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固体负载对数字光处理 3D 打印氮化铝陶瓷微观结构演变和导热性的影响

高效的热管理对于降低大功率光电元件的热点温度并提高其工作效率至关重要。在这项工作中，采用数字光处理（DLP）三维打印和微压辅助烧结方法的联合工艺制作了具有高密度和热传导特性的 AlN 陶瓷。系统讨论了固体负载对陶瓷微观结构演变和热性能的影响。利用优化的 DLP 三维打印和烧结参数设计并制造了 AlN 陶瓷微型通道散热器。通过研究封装激光二极管模块的光电特性，评估了陶瓷散热器的热管理性能。结果表明，激光二极管模块可以在全驱动功率下长时间工作。这项研究为制造具有复杂结构的高性能氮化铝陶瓷提供了一种新策略，并凸显了具有紧凑冷却剂通道的氮化铝陶瓷散热器的技术潜力。

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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.