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Synthesis of molybdenum carbide nanoparticles using pulsed wire discharge in mixed atmosphere of kerosene and argon
Author(s) -
Chu Ngo Minh,
Hieu Nguyen Duy,
Do Dung Thi Mai,
Sarathi Ramanujam,
Nakayama Tadachika,
Suematsu Hisayuki
Publication year - 2019
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/jace.16621
Subject(s) - argon , materials science , molybdenum , nanoparticle , kerosene , transmission electron microscopy , carbide , particle size , particle (ecology) , metallurgy , analytical chemistry (journal) , volume fraction , rietveld refinement , chemical engineering , composite material , chemistry , nanotechnology , crystallography , crystal structure , chromatography , organic chemistry , engineering , oceanography , geology
Pulsed wire discharge was used to prepare nanoparticles of molybdenum and its carbides from Mo wires in a gas mixture of argon and kerosene at pressures of 100, 50, and 25 kPa. The different pressures affected the carburization process and particle formation. The most effective pressure was 25 kPa, where the volume fraction of MoC was identified by Rietveld refinement of X‐ray diffraction data to be 98.4%. The particle size distribution was also obtained from transmission electron microscopy measurements, and the smallest geometric mean diameter was determined tobe 24.3 nm for the sample prepared at 25 kPa.