Effect the Actual Structure of Boron and Catalytic Additions on Boron Nitride Synthesis |
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Authors: | Kurdyumov Alexander V |
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Affiliation: | (1) National Academy of Sciences of Ukraine, Institute for Problems of Materials Science, ul. Krzhizhanovskogo 3, Kiev, Ukraine, 03142 |
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Abstract: | The bahavior of boron with different degrees of purity, fineness, and crystal structure perfection during nitriding at high temperature is studied by electron microscopy, x-ray diffraction, and chemical analysis. The effect of additives (Li2CO3, H3BO3, and NH4Cl) on boron nitride synthesis is studied. A marked reduction is established in the temperature for forming a highly-ordered boron nitride structure on introducing additives. The chemistry of the amorphizing effect of ammonium chloride on the crystal structure of boron is suggested. |
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Keywords: | boron nitrogen synthesis boron nitride catalytic addition amorphizing effect |
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