The inclination angle of the flake particle has a significant impact on the in-plane thermal conductivity of composites. The graphite flake/Al composites (50 vol%) with different inclination angles were fabricated via flake powder metallurgy, and the results show that with increasing the size of Al particle from 25.6 to 50.7 μm, the inclination angle of graphite flake decreases from 7.3° to 4.4°, while the in-plane thermal conductivity of composites increases from 473 to 555 Wm⁻¹ K⁻¹. Based on the rules of mixture, an effective model was established to qualify and quantify the relation between the inclination angle and the in-plane thermal conductivity of the corresponding composites. This model can also be applied to other flake particle-reinforced composites.

中文翻译：

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通过片状粉末冶金控制Al粒度控制石墨鳞片/ Al复合材料中石墨鳞片的倾斜角

片状颗粒的倾斜角度对复合材料的面内导热率有重要影响。通过鳞片粉末冶金制备了不同倾斜角的石墨鳞片/ Al复合材料（50体积％），结果表明，随着Al颗粒尺寸从25.6增加到50.7μm，石墨鳞片的倾斜角从7.3°减小。复合材料的面内导热率从473 Wm ^-1  K ^-1增加到4.4° 。根据混合规则，建立了一个有效的模型来限定和量化相应复合材料的倾角与面内导热率之间的关系。该模型也可以应用于其他片状颗粒增强复合材料。