Magnesium boride sintered as high-energy fuel

作者：Guo, Yang; Zhang, Wei^*; Zhou, Xing; Bao, Tong

来源：Journal of Thermal Analysis and Calorimetry, 2013, 113(2): 787-791.

DOI：10.1007/s10973-012-2832-2

• Borides
• Sintering
• Combustion efficiency
• Decomposition
• Differential thermal analysis

Boron was chosen as fuel owing to its excellent thermodynamic values for combustion. The difficulty of the boron in combustion is the formation of a surface oxide layer, which postpones the combustion process, reducing the performance of the rocket engine. In this paper, magnesium boride was sintered as high-energy fuel as a substitute for boron. The combustion heat and efficiency of magnesium boride and boron were determined using oxygen bomb calorimeter. The combustion characteristics of magnesium boride were investigated by thermal analysis, chemical analysis, XRD, and EDS. Results show that the combustion performance of magnesium boride are better than that of amorphous boron in oxygenated environments. The evaporation of magnesium in magnesium boride combustion process prevent the formation of a closed oxide layer, leading to higher combustion efficiency.

• 出版日期2013-8
• 单位中国人民解放军国防科学技术大学