Abstract
The sintering behavior in vacuum of ultrafine nonmilled titanium boride powder and a composite of the latter with CaB6 was investigated. It was shown that such titanium boride powders and TiB2−CaB6 composites poses better sinterability than conventional powders; the temperature of rapid densification was approximately 200°C lower. The introduction of ∼1% each of Fe and Ni into the TiB2−5% CaB6 composite noticeably accelerated densification due to the formation of a transient liquid phase. The effect was further enhanced by the activation of surface and volume diffusion by the solution of Fe and Ni in TiB2, as well as recrystallization processes.
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Materials Science Institute, Ukrainian Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 11–12, pp. 16–21, November–December, 1997.
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Serebryakova, T.I., Martynenko, E.N. Sintering of highly dispersed titanium diboride and composite titanium diboride-calcium hexaboride powders. Powder Metall Met Ceram 36, 579–583 (1997). https://doi.org/10.1007/BF02676142
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DOI: https://doi.org/10.1007/BF02676142