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Preparation of ultrafine molybdenum carbide (Mo2C) powder by carbothermic reduction of molybdenum trioxide (MoO3)
- Source :
- Journal of the Australian Ceramic Society. 56:1333-1340
- Publication Year :
- 2020
- Publisher :
- Springer Science and Business Media LLC, 2020.
-
Abstract
- Molybdenum carbide (Mo2C) is one of most widely used transition metal carbides due to its remarkable physical and chemical properties, such as outstanding catalytic properties, good thermal stability, high hardness, excellent corrosion, and wear resistances. In the current work, a facile and feasible method was proposed to synthesize ultrafine molybdenum carbide powders with a high purity. Firstly, molybdenum trioxide (MoO3) powder was reduced with insufficient carbon black powder to remove oxygen from MoO3 and generate a mixture of Mo2C and Mo. Then, the mixture was further carbided at 1100 °C or 1200 °C by carbon black to obtain pure Mo2C with an average particle size of 230 nm or 250 nm, respectively. A complete deoxidation at the first step is of significant importance for the precisely determining the amount of carbon addition in the carbonization step. The currently proposed method is a low-cost and efficient method to produce high purity and ultrafine Mo2C in a large scale.
- Subjects :
- 010302 applied physics
Materials science
Carbonization
Metallurgy
chemistry.chemical_element
02 engineering and technology
Carbon black
021001 nanoscience & nanotechnology
01 natural sciences
Corrosion
Catalysis
Molybdenum trioxide
chemistry.chemical_compound
chemistry
0103 physical sciences
Thermal stability
Particle size
0210 nano-technology
Carbon
Subjects
Details
- ISSN :
- 25101579 and 25101560
- Volume :
- 56
- Database :
- OpenAIRE
- Journal :
- Journal of the Australian Ceramic Society
- Accession number :
- edsair.doi...........45671849e05979af8961bc13adf0dc3f