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<p>Friction stir channeling is promisingly utilized to produce inbuilt cooling paths for cold plates within one-step process. Higher rectangularity and lower surface roughness of the prepared channels can significantly enhance heat dissipation performance. In light of this, friction stir channeling tools featured by a large-pitch threaded probe with triple milling facets was designed to create channels with high rectangularity of 90.8%. Electrochemical shaping was employed to achieve low surface roughness, thereby improving heat dissipation performance. The surface roughness was reduced by 55% after electrochemical shaping, accompanied by a 101.7% increase in heat dissipation rate. No leakage of coolants occurred under the pressure of 0.85 MPa with a holding time of 3600 s during hydrostatic tests, indicating a sound sealing performance of channels.</p>

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Rectangularity evaluation and electrochemical shaping of aluminum cold plates prepared by friction stir channeling

  • 期刊论文

  • 发表日期：

    2025年8月14日

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  • Yuming Xie,
  • Shengnan Hu,
  • Cheng Shan,
  • Shenglong Wang,
  • Xiangchen Meng,
  • Shuming Sun,
  • Xiaotian Ma,
  • Naijie Wang,
  • Yongxian Huang

摘要

Friction stir channeling is promisingly utilized to produce inbuilt cooling paths for cold plates within one-step process. Higher rectangularity and lower surface roughness of the prepared channels can significantly enhance heat dissipation performance. In light of this, friction stir channeling tools featured by a large-pitch threaded probe with triple milling facets was designed to create channels with high rectangularity of 90.8%. Electrochemical shaping was employed to achieve low surface roughness, thereby improving heat dissipation performance. The surface roughness was reduced by 55% after electrochemical shaping, accompanied by a 101.7% increase in heat dissipation rate. No leakage of coolants occurred under the pressure of 0.85 MPa with a holding time of 3600 s during hydrostatic tests, indicating a sound sealing performance of channels.