Synthesis of Niobium Carbide (NbC) by Powder Metallurgy High Energy Milling Technique
The aim of this work is to obtain and characterize the Niobium Carbide (NbC) by a suitable high energy milling technique using a SPEX Mill vibratory type and niobium and carbon (graphite) powders. Since this carbide is scarced in the national market and it’s necessary to apply this NbC as a reinforcement in two molybdenum high speed steels (AISI M2 and AISI M3:2) object of another work motivated this research. The powders were submitted to a high energy milling procedure for suitable times and conditions and then were characterized by means of Scanning Electronic Microscopy (SEM) and X-ray diffraction (DRX) techniques. The ball-to-powder weight ratio was 10:1. The analyzed samples showed that the high-energy milling is an alternative route of the NbC synthesis.
Lucio Salgado and Francisco Ambrozio Filho
R. T. Antonello et al., "Synthesis of Niobium Carbide (NbC) by Powder Metallurgy High Energy Milling Technique", Materials Science Forum, Vols. 660-661, pp. 443-447, 2010