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<p>In the current study, 30&#xa0;vol.% B<sub>4</sub>C/Al composites were prepared using spark plasma sintering to discuss their mechanical properties and corrosion resistance. The relative density of the B<sub>4</sub>C/Al composites was calculated to be as high as 95% using the Archimedes principle. The mechanical properties showed that the Vickers hardness, bending strength and fracture toughness of the composites reached 330.45 ± 26.76&#xa0;HV, 688.85 ± 57.64&#xa0;MPa and 12.67 ± 1.26&#xa0;MPa&#xa0;m<sup>1/2</sup>, respectively. Furthermore, a NaOH solution corrosion experiment of the B<sub>4</sub>C/Al composites was conducted, and the weight loss and corrosion time of the corrosion samples were Δ<i>M</i> = 0.0207t − 0.00675; the kinetic equation of the Na-ion corrosion diffusion distance and corrosion time was lnd = 0.36lnt − 0.7086. In addition, the microstructure of the samples before and after corrosion was investigated.</p>

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Mechanical Properties and Corrosion Kinetics of B4C/Al Composites

  • 期刊论文

  • 发表日期：

    2025年4月7日

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  • Liu Zhang,
  • Xiao Wang,
  • Mengqi Dong,
  • Qinghua Qian,
  • Zirun Yang

摘要

In the current study, 30 vol.% B4C/Al composites were prepared using spark plasma sintering to discuss their mechanical properties and corrosion resistance. The relative density of the B4C/Al composites was calculated to be as high as 95% using the Archimedes principle. The mechanical properties showed that the Vickers hardness, bending strength and fracture toughness of the composites reached 330.45 ± 26.76 HV, 688.85 ± 57.64 MPa and 12.67 ± 1.26 MPa m1/2, respectively. Furthermore, a NaOH solution corrosion experiment of the B4C/Al composites was conducted, and the weight loss and corrosion time of the corrosion samples were ΔM = 0.0207t − 0.00675; the kinetic equation of the Na-ion corrosion diffusion distance and corrosion time was lnd = 0.36lnt − 0.7086. In addition, the microstructure of the samples before and after corrosion was investigated.