Abstract
High-temperature oxidation of diamond powder and that coated with Ni-P has been studied by differential thermal analysis. It is shown that the temperature for active oxidation of uncoated powder is 820°C and that for composite powder is higher by 100°C. According to the thermogravimetric and DTA curves two kinds of chemical reaction are found for weight loss, i.e. with CO formation at the specimen surface (low-temperature TG curve parabolic region) and CO2 formation (high-temperature linear region). A catalytic effect of nickel on CO formation is established.
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Institute of Materials Science Problems, Ukrainian National Academy of Sciences, Kiev. Translated from Poroshkovaya Metallurgiya, Nos. 1/2(383), pp. 55–58, January–February, 1996. Original article submitted April 15, 1994.
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Lavrenko, V.A., Podchernyaeva, I.A., Peikhua, K. et al. Effect of cladding diamond powder with a nickel-phosphorus alloy on its high-temperature oxidation. Powder Metall Met Ceram 35, 48–51 (1996). https://doi.org/10.1007/BF01512662
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DOI: https://doi.org/10.1007/BF01512662