Super capillary performance of hybrid-structured wicks additively manufactured via laser powder bed fusion

IF 10.3 1区工程技术 Q1 ENGINEERING, MANUFACTURING

Additive manufacturing Pub Date : 2025-02-05 DOI:10.1016/j.addma.2025.104653

Xiaoqiang Peng , Guoliang Huang , Huan Chen , Qian Duan , Ke Huang

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引用次数: 0

Abstract

The capillary performance coefficient (K/R_eff) is a crucial performance indicator of the wick, a key component of high-performance heat pipes. However, it is difficult to enhance the permeability (K) and capillary pressure (

Δ P_{cap}

) at the same time. A wick with channels and porous hybrid structure was fabricated using Laser Powder Bed Fusion (LPBF) to achieve superior capillary performance. The channel structure ensures excellent permeability (K), while the porous structure offers high capillary pressure, which is further enhanced by the corner flow effect. The optimal structure, featuring a 0.6 mm square channel and 70.99 % porosity, achieved an ultra-high capillary performance of 3.24 × 10⁻⁶ m, which is 106.3 % higher than the previously reported best value. This study introduces a novel design concept and preparation method for high-performance heat pipes.

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来源期刊

Additive manufacturing Materials Science-General Materials Science

CiteScore

19.80

自引率

12.70%

发文量

648

审稿时长

35 days

期刊介绍： Additive Manufacturing stands as a peer-reviewed journal dedicated to delivering high-quality research papers and reviews in the field of additive manufacturing, serving both academia and industry leaders. The journal's objective is to recognize the innovative essence of additive manufacturing and its diverse applications, providing a comprehensive overview of current developments and future prospects. The transformative potential of additive manufacturing technologies in product design and manufacturing is poised to disrupt traditional approaches. In response to this paradigm shift, a distinctive and comprehensive publication outlet was essential. Additive Manufacturing fulfills this need, offering a platform for engineers, materials scientists, and practitioners across academia and various industries to document and share innovations in these evolving technologies.