Synthesis of Tin Powders Using Dynamic CRN Method

Abstract

Dynamic carbotermal reduction-nitridation (DCRN) is a new approach developed to produce more effective ceramic powder production than classical static system of carbothermal reduction-nitridation (CRN) method. In this new technique of DCRN, powder is produced in a moving system and production takes place at relatively lower temperatures and/or shorter times than CRN method. This study examines production of TiN powder by the DCRN method. The granules were prepared using TiO₂ and carbon black powders in the stoichiometric ratio (C/TiO₂=2). TiN powders of sub-micron were obtained in a graphite reactor from the prepared granules under N₂ gas flow. The effects of various test parameters were investigated for TiN synthesis, such as temperatures of reaction (1350-1450°C), reaction time (0.5-3 h), N₂ gas flow rate (60-120 L/h) and reactor rotation speed (2-6 rpm). The phases and microstructures of the powders were characterized by XRD, SEM and FESEM analyses.

Keywords

• Titanium nitride,Titanium dioxide,Powder synthesis,Dynamic carbothermal reduction

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