Premium
Nanoparticle synthesis of transition‐metal borides by pulsed discharge of compacted powder
Author(s) -
Nguyen D. Hieu,
Ngo M. Chu,
Tokoi Yoshinori,
Do ThiMaiDung,
Nakayama Tadachika,
Suematsu Hisayuki,
Niihara Koichi
Publication year - 2021
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.17780
Subject(s) - boride , materials science , amorphous solid , phase (matter) , nanoparticle , metallurgy , powder diffraction , transition metal , metal , analytical chemistry (journal) , chemical engineering , crystallography , nanotechnology , chemistry , catalysis , biochemistry , organic chemistry , chromatography , engineering
In this study, boride nanoparticles were synthesized via a low‐cost and simple pulsed discharge of compacted crystalline and amorphous B micron‐sized powders for the first time. Borides of Ti, Mo, W, and Zr were chosen for synthesis experiments. The as‐synthesized powders were spherically shaped and smaller than 100 nm. X‐ray diffraction patterns indicated the presence of several minor phases in each boride powder in addition to a single main‐phase boride. Specifically, the main phases were TiB 2 , MoB 2 , WB 4 , and ZrB 2 for borides of Ti, Mo, W, and Zr, respectively. Energy‐dispersive spectroscopy (EDS) indicated the presence of B and metal in almost all particles of every sample. The observed particles usually exhibited a two‐part structure: a boride phase and B. Small amounts of C, Fe, Cr, and Ni were detected by EDS; however, the contents of Fe, Cr, and Ni were substantially reduced after improvements to the experimental setup.