CAJ | 학술논문

利用自行设计的金属燃料点火温度测试系统，测试了常压下分别在空气和氧气中的镁包覆硼粉（包覆度20%）、镁粉及铝合金am-Al的点火温度。结果表明，与在空气中相比，3种金属燃料在氧气中的点火温度均有所降低；镁包覆硼粉有效降低了硼的燃点，促进了硼的点火和燃烧，且镁包覆硼粉在氧气中更易燃烧，其点火温度仅为约195.92℃；am-Al在氧气中可点燃，其点火温度低于镁，且燃烧放出的热量最高。在充足的氧气环境下，镁包覆硼粉及am-Al的点火温度均低于300℃，二者均可用作高热值金属燃料。
이용자행설계적금속연료점화온도측시계통，측시료상압하분별재공기화양기중적미포복붕분（포복도20%）、미분급려합금am-Al적점화온도。결과표명，여재공기중상비，3충금속연료재양기중적점화온도균유소강저；미포복붕분유효강저료붕적연점，촉진료붕적점화화연소，차미포복붕분재양기중경역연소，기점화온도부위약195.92℃；am-Al재양기중가점연，기점화온도저우미，차연소방출적열량최고。재충족적양기배경하，미포복붕분급am-Al적점화온도균저우300℃，이자균가용작고열치금속연료。
Ignition temperature of Mg, B coated by Mg (coating rate 20%) and alloy am-Al in air and oxygen at ambient pressure were studied, by use of self-designed experiment system. The result shows, ignition temperature in oxygen of all three metals are lower than that in air, B coated by Mg can significantly lower ignition point of B, and accelerate ignition and burning of B. Meanwhile, it is much easier for B coated by Mg to burn in oxygen, and the ignition temperature is only 195.92℃. Alloy am-Al can be ignited in oxygen, and the ignition temperature is lower than that of Mg. Among these three metal, alloy am-Al release much more heat during combustion compared with other two powders, ignition temperature of B coated by Mg and alloy am-Al are lower than 300℃, thus, both of them can be used as high calorific value metal fuel.