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Density- and Hardness-optimized Pressureless Sintered and Post-hot Isostatic Pressed B4C

  • Namtae Cho (a1), Zhihao Bao (a1) and Robert F. Speyer (a1)

Abstract

Pressureless sintered B4C relative densities as high as 96.7% were obtained by optimizing the soak temperature, and holding at that temperature for the minimum time required to reach terminal density. Although the relative densities of pressureless sintered specimens were lower than that of commercially produced hot-pressed B4C, their (Vickers) hardness values were comparable. For 4.45-cm-diameter, 1.35-cm-high disk-shaped specimens, pressureless sintered to at least 93.0% relative density, post-hot isostatic pressing resulted in vast increases in relative densities (e.g., 100.0%) and hardness values significantly greater than that of commercially produced hot-pressed B4C.

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a) Address all correspondence to this author. e-mail: robert.speyer@mse.gatech.edu

References

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Keywords

Density- and Hardness-optimized Pressureless Sintered and Post-hot Isostatic Pressed B4C

  • Namtae Cho (a1), Zhihao Bao (a1) and Robert F. Speyer (a1)

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