The particle size and distribution were determined by transmission electron microscopy and laser particle size distribution analyzer, ultraviolet-visible absorption curve was also characterized. 通过透射电镜、激光粒度分布仪等测定了纳米颗粒的粒径和分布情况,并对纳米金溶胶的紫外可见吸收曲线进行了研究。
Then, the heat source model of electron beam welding was established according to the energy distribution and the fitting curve using mathematical integration method. 根据拟合曲线以及能量分布特点,通过数学积分的方法,建立电子束焊接热源模型。