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This paper summarizes theoretical and experimental studies of cBN–Cr/Cr 3 C 2 1:1 and 2:1 molar ratios. From theoretical calculations, it follows that Cr/Cr 3 C 2 react with boron nitride forming one new phase CrB. Experimentally, CBN–Cr/Cr 3 C 2 composites were prepared by high-pressure hot-pressing, and the samples were subsequently heat-treated. The...
The micro-structural, compositional, temperature dependent dielectric and electrical properties of the Bi 1.5 Zn 0.92 Nb 1.5−x Ta x O 6.92 solid solution has been investigated. The increasing Ta content from 0.2 to 1.5 caused; single phase formation, a pronounced grain size reduction from ∼7.0 to 2.5μm, sharp decrease in the dielectric constant from 198 to 88...
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