本研究将17%Ti N增强α-β Si Al ON复合物在传感器辅助的微波加热系统中进行烧结。探索了Ti N的加入对粉状原料介电性能的影响,以及烧结温度对α-β Si Al ON复合物相变、微观结构演变及其机械性能的影响。结果表明Ti N的加入加强了微...本研究将17%Ti N增强α-β Si Al ON复合物在传感器辅助的微波加热系统中进行烧结。探索了Ti N的加入对粉状原料介电性能的影响,以及烧结温度对α-β Si Al ON复合物相变、微观结构演变及其机械性能的影响。结果表明Ti N的加入加强了微波吸热的效能,这在烧结温度峰值上得到了体现。α∶β比值因此降低了,各项机械性能得到了改善,突出表现在复合物断裂韧性的改善方面。另外,本研究列出了针对实验室微波辅助烧结过程的能量消耗估算数据。最终,本研究确定获得最高相对密度(97.1%)、维氏硬度(13.35±0.47 GPa)以及断裂韧性(7.52±0.54 MPa·m^(1/2))的试验条件为1 300℃下烧结30 min。展开更多
To broaden the application of SiO_(2) sol-bonded castables,using micro-or nano-Al_(2)O_(3) powder and SiO_(2) gel powder as the main raw materials,the effects of CaO impurity on the formation of mullite by the reactio...To broaden the application of SiO_(2) sol-bonded castables,using micro-or nano-Al_(2)O_(3) powder and SiO_(2) gel powder as the main raw materials,the effects of CaO impurity on the formation of mullite by the reaction of Al_(2)O_(3) and SiO_(2) at different temperatures(1350,1400,1500,and 1600℃)in different atmospheres(oxidation atmosphere and reduction atmosphere)were studied.The results show that in the oxidizing atmosphere,the introduction of CaO can promote the formation of mullite.When the temperature increases from 1350℃to 1600℃,the amount of mullite formed gradually increases.In the reducing atmosphere,the introduction of CaO is not conducive to the formation of mullite,and the amount of mullite decreases with the increasing temperature.The smaller the particle size of Al_(2)O_(3),the more easily it reacts with SiO_(2) gel powder to form mullite.展开更多
文摘本研究将17%Ti N增强α-β Si Al ON复合物在传感器辅助的微波加热系统中进行烧结。探索了Ti N的加入对粉状原料介电性能的影响,以及烧结温度对α-β Si Al ON复合物相变、微观结构演变及其机械性能的影响。结果表明Ti N的加入加强了微波吸热的效能,这在烧结温度峰值上得到了体现。α∶β比值因此降低了,各项机械性能得到了改善,突出表现在复合物断裂韧性的改善方面。另外,本研究列出了针对实验室微波辅助烧结过程的能量消耗估算数据。最终,本研究确定获得最高相对密度(97.1%)、维氏硬度(13.35±0.47 GPa)以及断裂韧性(7.52±0.54 MPa·m^(1/2))的试验条件为1 300℃下烧结30 min。
基金This work was financially supported by National Natural Science Foundation of China(Nos.52172031 and 51872266).
文摘To broaden the application of SiO_(2) sol-bonded castables,using micro-or nano-Al_(2)O_(3) powder and SiO_(2) gel powder as the main raw materials,the effects of CaO impurity on the formation of mullite by the reaction of Al_(2)O_(3) and SiO_(2) at different temperatures(1350,1400,1500,and 1600℃)in different atmospheres(oxidation atmosphere and reduction atmosphere)were studied.The results show that in the oxidizing atmosphere,the introduction of CaO can promote the formation of mullite.When the temperature increases from 1350℃to 1600℃,the amount of mullite formed gradually increases.In the reducing atmosphere,the introduction of CaO is not conducive to the formation of mullite,and the amount of mullite decreases with the increasing temperature.The smaller the particle size of Al_(2)O_(3),the more easily it reacts with SiO_(2) gel powder to form mullite.
