稀土学报（英文版）
稀土學報（英文版）
희토학보（영문판）
JOURNAL OF RARE EARTHS
2015年
7期
752-757
,共6页
李长记%刘实%熊良银%王文涛
李長記%劉實%熊良銀%王文濤
리장기%류실%웅량은%왕문도
W-2 wt.％Y2O3 composite material%lamellar nanometer powder%uniform distribution of Y%MA%SPS%rare earths
W-2 wt.%Y2O3 composite material with uniform distribution of yttrium element was fabricated through processes of me-chanical alloying (MA) and spark plasma sintering (SPS). The relevant productions were characterized by scanning electron micros-copy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and transmission electron microscopy (TEM). The XRD showed that the W-2 wt.%Y2O3 composite powder, including tungsten matrix and Y2O3 particles, was refined to nanometer sizes during the MA process. The SEM and TEM micrographs showed that the MA produced composite powder presented a lamellar morphology and contained many dislocations and microcracks. The EDS showed that the Y and O elements were uniformly distrib-uted in the W matrix after mechanically alloying for 15 h. The W-2 wt.%Y2O3 composite material with uniform distribution of yt-trium was obtained by sintering of the MA produced composite powder.
