Effects of nano ZrO2 content on the comprehensive properties of BN-SiC composites
Effects of nano ZrO2 content on the comprehensive properties of BN-SiC composites
复制标题
纳米ZrO2含量对BN-SiC复合材料综合性能的影响
DOI：
10.1016/j.jallcom.2019.152180
复制
发表时间：
2020-01
影响因子：
6.2
通讯作者：
Sang Shaobai
中科院分区：
文献类型：
--
作者：
Liao Ning;Qiu Baofu;Nath Mithun;Li Yawei;Sang Shaobai
采用纳米Al 2 O3和ZrO 2添加剂对铸钢件用热压BN-SiC复合材料进行增强。研究了纳米ZrO 2含量对BN-SiC复合材料力学性能、抗热震性能、抗氧化性能和耐钢材腐蚀性能的影响。结果表明，纳米ZrO 2和Al 2 O3的协同添加增强了固相扩散和孔隙填充效应，从而控制了陶瓷的致密化行为。提高的致密化和诱导的微观结构发展有助于提高机械性能和抗热震性。当纳米ZrO 2含量为15wt%时，试样的抗弯强度和断裂韧性分别达到334.6 ± 0.1MPa和4.60 ± 0.13MPa m1/2。此外，即使在1200 °C的温差下，在热冲击测试期间也没有观察到灾难性断裂。此外，由于复合材料的晶粒尺寸明显细化，界面ZrO 2保护层快速形成，复合材料在1600 °C下具有优异的耐钢腐蚀性能。
Hot-pressed BN-SiC composites applied for the steel casting application were enhanced using nano Al2O3and ZrO2additives. The influences of nano ZrO2content on the mechanical properties, thermal shock resistance, oxidation resistance, and steel corrosion resistance of BN-SiC composites were investigated. The results showed that the collaborative addition of nano ZrO2and Al2O3dominated the densification behavior due to the enhanced solid diffusion and pore filling effects. the improved densification and induced microstructure evelopment contributed to enhanced mechanical properties and thermal shock resistance. Consequently, the flexural strength and fracture toughness of 15 wt% nano ZrO2containing specimens reached to 334.6 ± 0.1 MPa and 4.60 ± 0.13 MPa m1/2, respectively. Furthermore, no catastrophic fracture was observed during thermal shock tests even under a temperature difference at 1200 °C. In addition, the prepared composites exhibit excellent steel corrosion resistance at 1600 °C, attributing to the much finer grain size and quick formation of protective ZrO2layer at the interface.
登录
查看更多内容
BN-ZrO2-SiC复合材料在钢水中的腐蚀行为和微观结构演变
影响因子：
2.1
作者：
Chen Lei;Zhen Li;Wang Yujin;Duan Xiaoming;Ouyang Jia-Hu;Zhou Yu
通讯作者：
Zhou Yu
放电等离子烧结h-BN-SiC陶瓷复合材料的显微组织、力学性能及热震行为
影响因子：
5.2
作者：
Zhai Fengrui;Li Shuang;Sun Jialin;Yi Zhongzhou
通讯作者：
Yi Zhongzhou
影响因子：
3.9
作者：
Guo‐Jun Zhang;H. Kita;N. Kondo;T. Ohji
通讯作者：
Guo‐Jun Zhang;H. Kita;N. Kondo;T. Ohji
影响因子：
5.7
作者：
A. Abreal;D. Goeuriot;F. Thévenot;M. Lagacé;B. Gueroult;M. Rigaud
通讯作者：
A. Abreal;D. Goeuriot;F. Thévenot;M. Lagacé;B. Gueroult;M. Rigaud
影响因子：
5.7
作者：
Guo‐Jun Zhang;Jianfeng Yang;M. Ando;T. Ohji
通讯作者：
Guo‐Jun Zhang;Jianfeng Yang;M. Ando;T. Ohji