Ni nanoparticles with Ce shell were prepared by H_2+ Ar arc plasma method and loaded on Al_2O_3 support by ball milling. 利用H2+Ar等离子体法制备具有Ce壳的纳米Ni粒子,并用球磨法负载到载体Al2O3上制得CeNi/Al2O3催化剂。
In microwave plasma CVD equipment, the inhomogeneous distribution of microwave electromagnetic field results in the inhomogeneous temperature of the plasma ball and substrate, and lowering quality of CVD diamond, so it is necessary to heat the substrate. 在微波等离子CVD设备中,微波电磁场的不均匀分布将导致等离子球和基片的温度不均匀,从而降低CVD金刚石的质量,因而基片加热是需要的。
Effect of the Plasma Cleaning Process on Plastic Ball Grid Array Package Assembly Reliability 等离子清洗工艺对PBGA组装可靠性的影响
Based on MHD concepts, we explain and prove that a self-confined plasma ball imbeded in a constant pressure p_0 can be in equilibrium as well as stable states. 本文用磁流体力学的概念,解释并证实了在环境压力Pu中确可存在平衡且稳定的球形等离子体。