A CaO-B2O3-SiO2 (CBS) glass/40 wt% Al2O3 composite sintered at 900°C exhibited a dense microstructure with a low porosity of 0.21%. This composite contained Al2O3 and anorthite phases, but pure glass sintered at 900°C has small quantities of wollastonite and diopside phases. This composite was measured to have a high bending strength of 323 MPa and thermal conductivity of 3.75 W/(mK). The thermal conductivity increased when the composite was annealed at 850°C after sintering at 900°C, because of the increase in the amount of the anorthite phase. 0.25 wt% graphene oxide and 0.75 wt% multi-wall carbon nanotubes were added to the CBS/40 wt% Al2O3 composite to further enhance the thermal conductivity and bending strength. The specimen sintered at 900°C and subsequently annealed at 850°C exhibited a large bending strength of 420 MPa and thermal conductivity of 5.51 W/(mK), indicating that it would be a highly effective substrate for a chip-type supercapacitor.

中文翻译：

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碳纳米管/氧化石墨烯添加CaO-B2O3-SiO2玻璃/Al2O3复合材料作为芯片型超级电容器的基材

在 900°C 下烧结的 CaO-B2O3-SiO2 (CBS) 玻璃/40 wt% Al2O3 复合材料显示出致密的微观结构，孔隙率低至 0.21%。这种复合材料含有 Al2O3 和钙长石相，但在 900°C 下烧结的纯玻璃含有少量硅灰石和透辉石相。该复合材料经测量具有 323 MPa 的高弯曲强度和 3.75 W/(mK) 的热导率。由于钙长石相量的增加，复合材料在 900°C 烧结后在 850°C 下退火时，热导率增加。将 0.25 wt% 氧化石墨烯和 0.75 wt% 多壁碳纳米管添加到 CBS/40 wt% Al2O3 复合材料中，以进一步提高导热性和弯曲强度。