激光沉积Mg_(2)Si/Al的原位反应动力学

In-situ Reaction Dynamics of Mg_(2)Si/AI Composites Fabricated by Laser Deposition

通过激光沉积制备了原位Mg_(2)Si/Al复合材料,建立了其动力学模型。结果表明,激光功率(温度)、富Mg层厚度、Si颗粒大小及A1含量是影响原位生成Mg_(2)Si/Al复合材料的速率及程度的主要因素。增加激光功率(温度)、降低富Mg层厚度、缩小Si颗粒大小及减少Al含量使原位反应的速率及程度提高。

In-situ magnesium silicide/aluminum(Mg_(2)Si/Al)composites were fabricated by laser deposition.A dynamic model of in-situ Mg_(2)Si/Al composites was established.The laser power(system temperature),Mg-rich layer thickness,Si particle size,and Al content were identified as the main factors affecting the reaction rate and degree.Results show that increasing the laser power(system temperature)and reducing the Mg-rich layer thickness,Si particle size,and Al content accelerate the reaction rate and degree.