Abstract
W-Y2O3 composite with the gradient variation of volume content of Y2O3 was fabricated by pressureless sintering process. Phases and microstructure of W-Y2O3 composite were characterized. Fracture mechanism was explored by means of the measured results of mechanical properties and fracture morphology. Distribution of thermal stress in W-Y2O3 graded material during sintering is simulated by finite element method, while feasibility of composition content and structure of each layer are analyzed, then W-Y2O3 graded material is successfully fabricated by this process. The results show that the mechanical properties of W-Y2O3 composite decrease with the increment of volume content of Y2O3, which is mainly contributed to the effects of inherent strength of composed phase, porosity and grain size. Finally, faultless W-Y2O3 graded material with high quality of interface bonding can be fabricated by reasonable design of gradient layers.
| Translated title of the contribution | Fabrication and mechanical property of w-y2o3 composites and graded material |
|---|---|
| Original language | Chinese (Traditional) |
| Pages (from-to) | 596-602 |
| Number of pages | 7 |
| Journal | Wuji Cailiao Xuebao/Journal of Inorganic Materials |
| Volume | 33 |
| Issue number | 6 |
| DOIs | |
| State | Published - 1 Jun 2018 |
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