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- W4386738961 abstract "Abstract The introduction of a reinforced phase is an effective way to toughen silicon nitride ceramics. However, the residual stress caused by thermal expansion mismatch between the reinforced phase and Si 3 N 4 ceramics may generate interfacial defects and deteriorate the strength of silicon nitride ceramics. Therefore, a novel strategy for optimizing interface structure to reinforceW/Si 3 N 4 composite ceramics has been proposed. After introducing (Y 2 O 3 , Al 2 O 3 , W) particles in the W/Si 3 N 4 ceramics, the melted liquid phase encompasses the W particles at high temperature and in situ‐generates the core‐shell structural W‐crystallized oxynitride phase as the material cools. As a result, the interfacial defect was inhibited after the core‐shell W‐crystallized oxynitride phase was introduced. With the increase of W addition from 0 to 4 wt%, the flexural strength of the W/Si 3 N 4 ceramics with introducing core‐shell structural W‐crystallized oxynitride phase increases from 985 to 1168 MPa, and the fracture toughness improves from 6.5 to 9.0 MPa m 1/2 ." @default.
- W4386738961 created "2023-09-15" @default.
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- W4386738961 date "2023-09-23" @default.
- W4386738961 modified "2023-09-30" @default.
- W4386738961 title "W/Si<sub>3</sub>N<sub>4</sub> composite ceramics reinforced with core‐shell W‐crystallized oxynitride phase" @default.
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- W4386738961 doi "https://doi.org/10.1111/ijac.14556" @default.
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