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Synthesis of YB 2 C 2 by high‐energy ball milling and reactive spark plasma sintering
Author(s) -
Nguyen VanQuyet,
Kim JunSeop,
Lee SeaHoon
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.17524
Subject(s) - spark plasma sintering , materials science , ball mill , yttrium , fabrication , sintering , raw material , analytical chemistry (journal) , metal , metal powder , particle size , chemical engineering , metallurgy , oxide , chemistry , engineering , medicine , alternative medicine , organic chemistry , pathology , chromatography
X‐ray pure yttrium diborodicarbide (YB 2 C 2 ) was synthesized for the first time via modified spark plasma sintering (SPS) using Y 2 O 3 , B 4 C, and carbon as starting materials. Homogeneous intermixing of the raw powder by high energy ball milling (HEBM) promoted the formation of YB 2 C 2 powder with layered structure by boro/carbo‐thermal reduction. The average particle size of the synthesized powder at an optimum synthesis temperature (1625℃) was 568 nm. Small amount of YB 2 C was formed by consuming YB 4 at and above 1625°C. The metal basis purity of the synthesized YB 2 C 2 powder was 99.84%. X‐ray pure YB 2 C 2 was obtained by densifying the synthesized YB 2 C 2 powder at 1900°C for 60 minutes at a pressure of 80 MPa using SPS. This study reports a simple method for the fabrication of X‐ray pure rare earth metal diborodicarbides (ReB 2 C 2 ).