Abstract
Oxidation in air of TiB2 powders of two different types in the temperature range from 100 to 900°C as well as of compact samples produced from them (at 600–1200°C) was studied by DTA, thermogravimetry, X-ray analysis, AES, EPMA, and SEM methods. The admixture elements in powders were found to prevent oxygen from enriching the diboride surface. In compact TiB2 samples impurities form diffusion barriers during oxidation at the matrix/scale and scale/gas interfaces as well as facilitate sintering of the scale being formed.
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Voitovich, V.B., Lavrenko, V.A. & Adejev, V.M. High-temperature oxidation of titanium diboride of different purity. Oxid Met 42, 145–161 (1994). https://doi.org/10.1007/BF01061928
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DOI: https://doi.org/10.1007/BF01061928