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Erschienen in:
2016 | OriginalPaper | Buchkapitel
One-Step Preparation of TiB2-C Composite by DC Arc Furnace
verfasst von : Kuanhe Li, Shuchen Sun, Xiaoxiao Huang, Shuaidan Lu, Xiaoping Zhu, Ganfeng Tu
Erschienen in: TMS 2016 145th Annual Meeting & Exhibition
Verlag: Springer International Publishing
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Previous approaches to prepare bulk TiB2-C composite is sintering the TiB2 powder mixed with the C component, so that lead to a series of problems, due to the bad sintering properties. This paper discribes a one-step method of preparing the TiB2-C composite, especially for using as inert cathode in electrolytic aluminum, from the raw materials of TiO2, B2O3 and petroleum coke, by a dc arc furnance. The rapid and high-temperature heating process provided by the arc furnance leads to the carbothermal reaction to prepare TiB2, and the overdosed carbon is included in TiB2 matrix. The XRD(X-Ray Diffraction), SEM(Scanning Electron Microscope), and chemical component analysis are used in the testing part, and the one-step process of preparing bulk TiB2-C composite is studied.