Effect of TiB2 and Boron Additions on the Stability of Wurtzite-Type Boron Nitride at High Temperatures and Pressures |
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| Authors: | TAMOTSU AKASHI AKIRA SAWAOKA SHINROKU SAITO |
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| Affiliation: | Research Laboratory of Engineering Materials, Tokyo Institute of Technology, Meguro, Tokyo 152, Japan |
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| Abstract: | Shock-synthesized wurtzite-type BN(w-BN) and mixtures of w-BN–TiB2 and w-BN–ß were treated at high temperatures and pressures. The effect of TiB2 and boron additions on the transformation of w-BN to zinc blende-type BN(z-BN) was studied at 1000° to 2200°C and 55 to 68 kbars. The formation region of z-BN was shifted toward higher temperatures by TiB2 additions and toward lower temperatures by boron additions. |
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