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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。
The thermodynamics and kinetics of MgO particle reinforced Mg-Li matrix composites synthesized by reaction of B2O3 with Mg-Li alloy were studied by DTA and liquid quenching experiments. The results show that the reaction temperature of B2O3 and Mg-Li alloy is close to the conventional melting temperature of Mg-Li alloy, and the reaction speed is very fast. It is suitable for the preparation of composite materials. Microstructure observation and XRD analysis showed that the MgO particles generated by the reaction are small in size, round in shape and evenly distributed.