Journal
JOURNAL OF MATERIALS RESEARCH
Volume 20, Issue 8, Pages 2110-2116Publisher
CAMBRIDGE UNIV PRESS
DOI: 10.1557/JMR.2005.0260
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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 relatives densities (e.g., 100.0%) and hardness values significantly greater than that of commercially produced hot-pressed B4C.
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