Effects of ZrB2 contents on the mechanical properties and thermal shock resistance of B4C–ZrB2 ceramics
作者： Rujie He , Li Jing , Zhaoliang Qu , Zhili Zhou , Shigang Ai
DOI: 10.1016/J.MATDES.2015.01.002
关键词: Temperature difference 、 Vickers hardness test 、 Microstructure 、 Thermal shock 、 Ceramic 、 Sintering 、 Quenching 、 Materials science 、 Composite material 、 Fracture toughness
摘要: B 4 C–ZrB 2 ceramics with different ZrB 2 contents were fabricated using hot-pressing technique. The introduction of ZrB 2 greatly promotes the sintering process, and all B 4 C–ZrB 2 samples achieve full densification. With the ZrB 2 content increasing from 10 to 40 vol.%, the Vickers hardness ranges from 28.8 to 34.6 GPa, the flexure strength ranges from 233.3 to 523.4 MPa, and the fracture toughness ranges from 6.0 to 7.0 MPa m 1/2, respectively. The thermal shock properties of B 4 C–ZrB 2 ceramics were also investigated …
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