摘要
通过DTA及液淬试验,对B2O3与Mg-Li合金反应合成MgO颗粒增强Mg-Li基复合材料的热力学及动力学进行了研究。结果表明,B2O3与Mg-Li合金的反应温度与Mg-Li合金常规熔炼温度接近,且反应速度很快,适于反应合成复合材料的制备。显微组织观察与XRD分析发现,反应生成的MgO颗粒尺寸细小,形状圆整且分布均匀。
This paper deals with the thermodynamics and kinetics of the reaction of B_2O_3 with Mg-Li alloy for the production of MgO particulates reinforced Mg-Li composites, which were examined with DTA and water quenching. It can be seen that the reaction of B_2O_3 with Mg-Li alloy could take place at the usual melting temperature of Mg-Li alloys and the reaction rate is quick. Fine, spherical and dispersed MgO particulates were formed by reactive synthesis process, and the presence of MgO was verified by XRD data. The mechanism of reaction is also discussed.
出处
《复合材料学报》
EI
CAS
CSCD
北大核心
1998年第2期18-22,共5页
Acta Materiae Compositae Sinica
基金
山东省自然科学青年基金
国防科工委金属精密加工重点实验室基金
关键词
复合材料
反应合成
热力学
镁锂合金
三氧化二硼
Mg-Li composites, reactive synthesis process, thermodynamics and kinetics